BRICTEC Engineering

Latest Progress of Brictec's MUSK Project in Iraq
June 10, 2026 – Latest progress of Brictec's MUSK clay fired brick project in Iraq, a modern block production line with a daily output of 800 tons.
The project covers load bearing blocks, standard bricks and partition blocks, aiming to provide a stable and high quality supply of wall materials for various types of local building structures, thereby supporting the sustainable development of regional urban construction.
1. Steel structure of the main workshop has been completed;
2. Ground treatment of the workshop is ongoing;
3. Installation and pre-embedding of kiln car rails have started;
Other civil infrastructure works are progressing in an orderly manner…
Stay tuned for more project updates.



#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

Xi'an Brictec engineering Co., Ltd. (abbreviation: Xi'an Brictec) was founded in 2011. It employs senior Italian engineers to work with domestic experts, creating a strong technical team by combing the European and Chinese technologies. The company is devoted to provide clients multiple professional brick making solutions, including building structure bricks, decorative bricks,wall cladding bricks, paver and dry press bricks, etc.
🌐Website: en.brictec.com/
📩 E-mail: info@brictec.com
📞WhatsApp:+86 181 8262 2677
Xi'an Brictec Engineering Co.,LTD
Address: [Zhongxing Industrial Park, No. 10, Tangyan South Road, High-tech Zone, Xi'an]

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2 days ago | [YT] | 12

BRICTEC Engineering

Tunnel Kiln Brick Production: Energy Control Technologies Explained

Fuel cost, electricity cost, and labor cost constitute the three major expenses in sintered brick production. However, due to improper construction and operation, fuel waste is extremely common. Therefore, reducing energy consumption is a long‑term objective for any brick production machine line.



1. Kiln Body Insulation and Energy Consumption

The insulation performance of the kiln body is critical to energy saving. In a continuously operated brick firing system, approximately 30–40% of the heat is absorbed and dissipated by the kiln structure. As fuel prices rise, improving kiln insulation becomes increasingly important. The kiln body consists of two main parts: the walls and the roof.

The external wall is in direct contact with the ambient air. To reduce heat loss, an additional 150–250 mm layer of insulating wool should be added inside the wall. Roof heat dissipation is the main path of energy loss, making roof insulation particularly important. In addition to using insulating wool in the arch brick layers, lightweight insulating materials such as perlite should be filled in the upper part to enhance thermal performance. Common high‑performance insulation materials include aluminum silicate fiber wool, rock wool, perlite, and lightweight insulating bricks. In comparable regions, adding insulation to kiln walls can reduce energy consumption by more than 50 kcal per kg of fired product compared to non‑insulated walls.

National standards specify that the temperature rise on the outer wall of the kiln shall not exceed 15°C, and on the roof not exceed 25°C. If a brick kiln meets these criteria, its energy consumption will be greatly reduced. Achieving this requires high‑quality insulation materials — for a 4.6 m wide tunnel kiln, the additional investment is approximately RMB 100,000–120,000.



2. Kiln Car Insulation and Energy Consumption

Heat loss through kiln cars is another major pathway. In many tunnel kilns, the temperature under the car reaches as high as 300°C, resulting not only in severe heat loss but also in frequent bearing failures. The main causes are poor thermal insulation of the car’s masonry and inadequate sealing at the joints between adjacent cars. A well‑designed kiln car must have insulating wool, perlite, and lightweight insulating bricks laid on the underframe, followed by refractory bricks. The joints require a two‑stage sealing system with embedded insulating wool to effectively reduce heat transfer to the undercar area.

3. Kiln Car Sand Seal and Energy Consumption

Poor sealing performance of the sand seal in a tunnel kiln not only causes heat loss but, more importantly, leads to erratic airflow inside the kiln — a primary cause of underfired bricks. Cold air infiltrating through the sand seal directly affects the bricks on both sides of the kiln car. The side areas already experience lower temperatures due to heat absorption by the kiln walls; the additional cold air further reduces the temperature, inevitably producing underfired bricks along both sides of the kiln. Integrating a reliable sand seal is a key design feature of any efficient brick machine line.



4. Tunnel Kiln Ventilation and Energy Consumption

Fuel combustion requires sufficient oxygen. Approximately 30–40 m³ of air is needed to burn 1 kg of pure carbon. Although the airflow inside the kiln is driven by the induced draft of the exhaust fan, the cross‑sectional area of the ventilation duct is the key to ensuring adequate air volume. Without sufficient airflow, fuel cannot burn completely. Under sufficient oxygen, 1 kg of pure carbon generates about 8500 kcal of heat and produces CO₂. Under oxygen‑deficient conditions, only about 1700 kcal is released, and the unburned carbon converts into carbon monoxide (producer gas), which is exhausted from the kiln.

Based on the requirement of 30–40 m³ of air per kg of pure carbon, and approximately 1.1 tons of pure carbon per 10,000 standard bricks, a tunnel kiln with a daily output of 200,000 standard bricks (about 8,000 bricks per hour) needs about 880 kg of pure carbon per hour. The ventilation duct must supply 880 × 40 = 35,200 m³ of air per hour. At an air velocity of 8 m/s, the required cross‑sectional area is 35,200 / 3600 / 8 = 1.22 m². In practice, the duct area should be 1.5 times larger than the calculated value, because the internal fuel and externally added coal used in brickmaking contain ash and have lower calorific values, requiring significantly more air than pure carbon combustion.



5. Kiln Insulation and Green Brick Drying Performance

The heat used for drying green bricks comes from the flue gas and waste heat of the firing kiln. Waste heat is released during the cooling stage of fired bricks. A well‑insulated brick firing system not only reduces heat loss and energy consumption during firing but also extracts sufficient heat from the cooling zone to send to the drying chamber. Only with ample heat can the drying chamber ensure proper drying of green bricks, which directly affects the efficiency of the brick production machine line.

6. Kiln Length and Thermal Efficiency

Increasing the length of the kiln not only improves output and quality but, more importantly, enhances thermal efficiency. A longer kiln allows a longer firing zone and extended residence time, enabling a “low‑temperature, long‑firing” strategy. Extending the soaking time at a relatively lower temperature equalizes the cross‑sectional temperature profile, increases product strength, and reduces underfired bricks. Moreover, with a longer firing zone, the car advancing speed can be appropriately increased to raise output. In addition, a longer kiln makes it possible to fully extract waste heat from the cooling zone and send it to the drying chamber. If the tunnel kiln is too short, bricks exiting the kiln are still hot, and a large amount of waste heat is dissipated into the atmosphere. Only the heat retained inside the kiln can be extracted by fans and utilized for drying. Therefore, an appropriate increase in kiln length not only boosts production and ensures product quality but also maximizes the use of waste heat for drying green bricks.



7. Production Output and Energy Consumption

The heat absorbed by the kiln structure is time‑dependent, not output‑dependent. From ignition at the beginning of the year to shutdown at the end, the kiln consumes a fixed amount of heat every day regardless of how many bricks are produced. Thus, increasing daily output is an effective way to reduce energy consumption per brick. Increasing the ventilation rate to promote rapid fuel combustion is a prerequisite for higher output. Higher output inherently reduces the energy consumed per brick — a key performance indicator for any modern brick making machine line.







#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

Xi'an Brictec engineering Co., Ltd. (abbreviation: Xi'an Brictec) was founded in 2011. It employs senior Italian engineers to work with domestic experts, creating a strong technical team by combing the European and Chinese technologies. The company is devoted to provide clients multiple professional brick making solutions, including building structure bricks, decorative bricks,wall cladding bricks, paver and dry press bricks, etc.
🌐Website: en.brictec.com/
📩 E-mail: info@brictec.com
📞WhatsApp:+86 181 8262 2677
Xi'an Brictec Engineering Co.,LTD
Address: [Zhongxing Industrial Park, No. 10, Tangyan South Road, High-tech Zone, Xi'an]

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2 weeks ago | [YT] | 5

BRICTEC Engineering

Key Technical Analysis of Ignition and Firing Operations in Trial Production of New Brick Production Lines

The trial production of a new brick production line is a complex engineering task involving multi-system coordination, including equipment commissioning, workforce skill development, and raw material adaptability. Successful trial production relies not only on efficient collaboration among workshops but also on an experienced technical leader and a highly responsible team. Based on extensive field tracking of several tunnel kiln production lines across different regions, this paper summarizes practical issues encountered during ignition, drying, and firing stages, and proposes targeted recommendations to improve ignition efficiency and reduce trial production losses.



1. Technical Specifications for Ignition Operation

Drawing on practical experience from multiple production lines and mature operating practices from annular kilns, this paper presents a rational set of technical specifications for ignition operation, aiming to coordinate process parameters, minimize errors, and control trial production losses.

1.1 Precise Control of Raw Material Calorific Value

During the ignition phase, the drying chamber and the firing kiln — especially the kiln cars, side walls, and roof of the brick firing system — absorb a substantial amount of heat. Therefore, when preparing internally fueled green bricks, the calorific value of the raw material should be appropriately increased, ideally within 450–500 kcal/kg. This range satisfies the heat demand for firing while providing surplus heat for drying. It is not necessary to blend large quantities of high‑calorific materials; only 10–15 kiln cars of bricks need to achieve this value. Excessively high calorific values can lead to uncontrollable kiln temperatures. Unlike annular kiln operation, external coal addition should be avoided during tunnel kiln ignition. The heat transfer efficiency of internal fuel is far superior to that of external coal, which also increases labor costs and may cause localized overheating. Once the ignition car ignites the adjacent brick car, the kiln temperature field can be rapidly established through thermal radiation and convection — an approach that integrates seamlessly with modern brick making machine automation, eliminating the need for external fuel.

1.2 Management of Residual Moisture and Setting Density

Before ignition, green bricks must be naturally dried for a sufficient period to minimize residual moisture. The drying chamber and storage tracks should be fully loaded with brick cars. The exhaust fan in the drying chamber can be activated in advance to circulate ambient air, further reducing moisture content. The lower the residual moisture of incoming bricks, the lower the thermal load on the preheating zone, facilitating rapid temperature rise. Meanwhile, setting density should not be excessively high, as this increases airflow resistance in both the drying chamber and the kiln, complicating commissioning. During the ignition phase, the average setting density is recommended to be 190–220 pieces/m³.



1.3 Firing Strategy: Low-Temperature, Long Firing

Ignition‑phase firing must achieve three objectives:
① supply stable heat to the drying chamber to enhance drying efficiency;
② ensure product quality;
③ rapidly establish a rational firing regime.
To this end, a “low-temperature, long firing” strategy is recommended, based on the following considerations:

• During initial ignition, the drying chamber temperature is low and cannot supply a large volume of low‑moisture bricks. The front section of the firing kiln must temporarily assist in drying, so its temperature rise rate should be moderated and the preheating zone appropriately lengthened. After a stable high‑temperature zone is formed inside the kiln, dampers are adjusted to gradually move the high‑temperature zone forward, shortening the preheating zone while delivering more heat to the drying chamber, enabling a smooth transition to normal production.
• At ignition, the kiln walls and roof are not fully dried and lack sufficient heat accumulation. “High‑temperature, fast firing” is inappropriate. Low‑temperature, long firing allows the kiln structure to accumulate heat gradually, forming a stable temperature profile. It also enables the ventilation system to be commissioned under varying loads, facilitating stepwise mastery of damper settings and system resistance characteristics.
• The ignition phase requires modification of the preset firing curve to identify a sintering curve that matches the raw material properties. Low‑temperature, long firing offers a wider adjustment margin, making it easier to detect firing patterns and prevent product defects caused by excessively low or high sintering temperatures.

This firing strategy is particularly compatible with advanced brick machine systems, as it reduces thermal shock and allows stable heat distribution across the kiln.



1.4 Hot Spot Localization and Temperature Control

The positioning of the high‑temperature zone (hot spot) is critical to firing operations. Reliance on the monitoring system alone is insufficient; flame color and behavior in the high‑temperature zone should also be observed to assess actual firing temperatures. Feedback from products exiting the kiln should be used to continuously adjust the sintering temperature. During ignition, the hot spot should be set slightly lower than the design temperature, with fine‑tuning performed after analyzing product quality — this effectively prevents overfired bricks.

The ignition of a new kiln involves multiple process subsystems: raw material preparation, drying, firing (the core brick firing system), and ventilation. Pre‑ignition preparation must be thorough, including a deep understanding of raw material characteristics and system status. Overconfidence should be avoided. Only through scientific control of key parameters and system‑level coordination can the success rate of ignition be improved and scrap rates reduced.



Conclusion
Drying and firing form an integrated, unified system. Operation should adhere to principles of system balance and progressive advancement, steadily increasing output while ensuring product quality. The “low‑temperature, long firing” approach offers broad adaptability to different raw materials, facilitates firing control, significantly reduces defect rates during commissioning, and accelerates the establishment of a stable firing process — ultimately enhancing the overall performance of your brick production machine and brick making machine.





#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

Xi'an Brictec engineering Co., Ltd. (abbreviation: Xi'an Brictec) was founded in 2011. It employs senior Italian engineers to work with domestic experts, creating a strong technical team by combing the European and Chinese technologies. The company is devoted to provide clients multiple professional brick making solutions, including building structure bricks, decorative bricks,wall cladding bricks, paver and dry press bricks, etc.
🌐Website: en.brictec.com/
📩 E-mail: info@brictec.com
📞WhatsApp:+86 181 8262 2677
Xi'an Brictec Engineering Co.,LTD
Address: [Zhongxing Industrial Park, No. 10, Tangyan South Road, High-tech Zone, Xi'an]

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4 weeks ago | [YT] | 11

BRICTEC Engineering

Analysis of Key Technologies for Energy Saving, Consumption Reduction and Green Low‑Carbon Production in Clay Brick Plants

Under the wave of green & low‑carbon and smart manufacturing, fired brick enterprises must achieve carbon peak and carbon neutrality goals while improving capacity and quality. The fire advance rate directly determines kiln output. In most cases, hollow bricks have a faster fire advance rate than solid bricks, but under certain conditions, hollow bricks can fire slower than solid bricks. Based on practical tunnel kiln production experience, this article deeply analyzes the core factors affecting the fire advance rate, and integrates industry hotspots such as solid waste utilization, prefabricated building blocks, and sponge city paving materials, helping enterprises achieve energy saving and clean production.

I. Unreasonable Green Stack Structure: Poor Preheating is the First “Stumbling Block”

The stacking principle of “dense on top, sparse at the bottom; dense at the sides, sparse in the middle” is the foundation for fast firing. The flue passages and green body dimensions must be well coordinated – too few or too many flues, too wide or too narrow gaps, or improper spacing between bricks will seriously slow down the fire advance rate. Gaps between the stack and the kiln roof/walls should be minimized. Special note: Many manufacturers stack most bricks with holes facing upward, with few or no horizontal holes. This obstructs hot air from penetrating through the green body, causing a large temperature difference inside and outside the stack, naturally reducing the fire advance rate. For large‑void‑rate products (e.g., KM blocks), the hole layout must be optimized to facilitate hot gas flow, which is also an important aspect of digital twin simulation in the industrial internet.



II. Improper Draft Pressure or Damper Shape: Oxygen Deficiency in the Firing Zone Lowers the Speed

Draft pressure directly affects the oxygen supply for firing and the preheating of the stack. When the pressure is too low, the firing zone will suffer from varying degrees of oxygen deficiency; part of the heat energy floats upward, the forward force weakens, and the heat exchange rate in the preheating zone decreases – thus the fire advance rate slows down. Principle for determining optimal draft pressure: ensure that the firing zone reaches adequate temperature, and that the top and both sides of the brick stack show no underfired bricks. Then gradually increase the draft pressure. Through repeated observation of bricks and fire, the optimal draft pressure data for your specific kiln can be determined.

The damper (Hafeng damper) shape also significantly influences the fire advance rate. Currently, different kiln operators use various damper configurations, leading to inconsistent speeds. It is recommended to use more dampers (all dampers except those near the kiln entrance and 5m~8m in front of the firing zone). Two common shapes are:

Trapezoidal damper pattern: Highest at the entrance end, then gradually lower toward the firing zone. This maximizes thermal efficiency and provides sufficient heating and preheating space, suitable for pursuing a high fire advance rate.

Bridge‑shaped damper pattern: The first 2–3 dampers at the entrance end are low, then gradually raised to the highest in the middle, and slowly lowered again toward the rear. This pattern reduces the risk of moisture regain and condensation, and lowers the occurrence of firing cracks and explosive defects, making it especially suitable for high‑void‑rate thin‑wall products. However, the fire advance rate is slightly lower than with the trapezoidal pattern. Under the requirement of environmentally friendly & efficient production, the bridge‑shaped pattern can be combined with low‑calorific‑value internal fuel to achieve stable, high‑quality output.



III. Non‑standard Internal Fuel Blending: The Root Cause of Large Temperature Fluctuations

Standardized internal fuel blending stabilizes the fire advance rate, saves auxiliary fuel, and enables sustainable high‑quality firing. The key is proper blending ratio and uniform, stable calorific value. In reality, some enterprises neglect internal fuel blending, resulting in fluctuating calorific values, drastic changes in fire advance rate and firing temperature, forcing operators to adjust frequently, which can easily produce defective products.

How to determine the internal fuel blending amount for hollow bricks? Taking KP1 and KP2 perforated bricks as an example, the calorific value required for normal firing is lower than that for solid bricks, generally 285 kcal/kg ~ 350 kcal/kg. The reason is that the relatively faster fire advance rate lengthens the firing zone, creating a “low‑temperature long‑firing” condition: the firing temperature is 20°C~45°C lower than for solid bricks, while the holding time is extended by more than 20%. This is the main reason why ordinary hollow bricks need less internal fuel. For large‑void‑rate KM blocks, the story is different. As the void ratio increases, the solid mass per unit volume decreases, but the heat transfer and self‑combustion conditions become more complex, so the internal fuel blending amount actually needs to be increased appropriately. This technical detail is especially important when utilizing solid waste (e.g., coal gangue, fly ash, construction waste as internal fuel), effectively reducing production costs and contributing to urban renewal and sponge city construction.



IV. Conclusion: Systematic Optimization to Seize the High Ground of Green Fired Bricks

Increasing the fire advance rate is not a single action but requires systematic optimization of three aspects: green stack structure, draft pressure and damper shape, and internal fuel blending ratio, as well as differentiated management for products with different void ratios. The industry is rapidly moving toward digital twins and industrial internet enabled transformation, using sensors to monitor fire advance rate, kiln temperature and pressure distribution in real time, thus achieving smart manufacturing and clean production. It is recommended that brick plants, in the context of carbon peak and carbon neutrality, actively replace part of the raw fuel with solid waste, promote high‑void‑rate blocks for prefabricated buildings, and strictly implement energy saving technical specifications, thereby maintaining both technical leadership and environmental compliance in the fierce market competition.



#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

Xi'an Brictec engineering Co., Ltd. (abbreviation: Xi'an Brictec) was founded in 2011. It employs senior Italian engineers to work with domestic experts, creating a strong technical team by combing the European and Chinese technologies. The company is devoted to provide clients multiple professional brick making solutions, including building structure bricks, decorative bricks,wall cladding bricks, paver and dry press bricks, etc.
🌐Website: en.brictec.com/
📩 E-mail: info@brictec.com
📞WhatsApp:+86 181 8262 2677
Xi'an Brictec Engineering Co.,LTD
Address: [Zhongxing Industrial Park, No. 10, Tangyan South Road, High-tech Zone, Xi'an]

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1 month ago | [YT] | 12

BRICTEC Engineering

Brictec Iraq Clay Brick Production Line KTB Project – Construction Progress Report

Title: Brictec Iraq Clay Brick Production Line KTB Project – Construction Progress Report
Event: Progress Tracking Record for Brictec’s Clay Fired Brick Production Line
Date: May 2026
Keywords: Brictec; Clay brick; KTB Project

I. Construction Progress of the Reclaiming Storage (Chenghua Warehouse)

The installation of the reversible distributing machine platform is progressing in an orderly manner. At present, 60% of the total installation work has been completed. The on‑site construction progress remains stable, with a daily hoisting output of 15 metres. The remaining installation work will continue steadily at this pace.



II. Construction Progress of the Tunnel Kilns

Tunnel Kiln Line 2:
The track installation on the existing foundation has been fully completed, and the associated concrete pouring has been finished simultaneously. The next construction phase will now proceed.

Tunnel Kiln Line 3:
70% of the track installation on the existing foundation has been completed. According to the construction schedule, concrete pouring for the track foundation will be carried out tomorrow, ensuring a smooth transition to subsequent track installation steps.



III. Construction Progress of Hot Air Ducts and the Drying Chamber

The main hot air supply ducts for Lines 2 and 3 have been successfully connected to the top of the drying chamber. Due to continuous rainfall, the pouring of the fan foundations on top of the drying chamber was postponed and completed on the 23rd. According to the construction plan, fan installation and duct connection work for Line 2 will commence on the 28th. The corresponding work for Line 3 will proceed according to the follow‑up schedule.

Drying Chamber Foundation for Line 1:
Currently, 65 construction workers have been deployed, and construction has been ongoing for 45 days. Only 40% of the foundation work has been completed so far, indicating a relatively slow overall progress. According to the company’s latest design requirements, two additional foundation expansion joints have been added to the drying chamber foundation area, further improving foundation construction specifications and ensuring subsequent construction quality.



IV. Construction Progress of Equipment Foundations

Regarding the equipment foundation construction for Line 1, only the foundation work for the box feeder at the exit of the reclaiming storage, the fine roll crusher, and the coarse roll crusher has been completed so far. Foundation work for all other equipment has not yet started, ensuring alignment with the overall construction schedule.



V. Welding Work Progress

U‑bolt welding is currently in progress, with 14 electric welding machines operating simultaneously on site. To date, only 50% of the total welding work has been completed. At the same time, more than 60 workers remain on site daily at the drying chamber foundation construction area, making every effort to advance the foundation work and strive to close the progress gap.


#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

Xi'an Brictec engineering Co., Ltd. (abbreviation: Xi'an Brictec) was founded in 2011. It employs senior Italian engineers to work with domestic experts, creating a strong technical team by combing the European and Chinese technologies. The company is devoted to provide clients multiple professional brick making solutions, including building structure bricks, decorative bricks,wall cladding bricks, paver and dry press bricks, etc.
🌐Website: en.brictec.com/
📩 E-mail: info@brictec.com
📞WhatsApp:+86 181 8262 2677
Xi'an Brictec Engineering Co.,LTD
Address: [Zhongxing Industrial Park, No. 10, Tangyan South Road, High-tech Zone, Xi'an]

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1 month ago | [YT] | 8

BRICTEC Engineering

Energy-Efficient Tunnel Kiln Car Systems in the Heavy Clay Industry

Dr. Volker Hesse, D-Melle/Buer

In the clay brick industry, the development of tunnel kiln car systems has always been a major topic for manufacturers of clay bricks and roofing tiles. This article presents some views on this subject from Burton-Werke, a supplier of tunnel kiln car systems for most brick and roofing tile plants in Germany.

From the perspective of overall kiln technology development, the trend is towards automated firing equipment to meet the growing demands for clay products, with more precise raw material preparation and more uniform green bodies. This discussion includes roller kilns, Monker kilns, high-frequency technology, etc.

However, alongside these developments, the traditional tunnel kiln will certainly retain its place, and it has evolved in many respects, not only in terms of firing components.

Before deciding on a specific firing technology, a cost-benefit analysis is usually performed, taking into account the necessary products and raw materials to be used.

With regard to the development of tunnel kiln cars, the following aspects deserve special attention.

General view of tunnel kiln cars

This involves not only technical and economic calculations but also the user’s expectations. For a system supplier, the task is not to select one standard solution or another, but to create a solution for the user that meets their requirements, aligns with their own considerations, and satisfies their ultimate needs.

Nevertheless, irrespective of the above, the following general criteria for selecting a tunnel kiln system are commonly used, mainly for cost reasons.

Cost factors in tunnel kiln car operation

Wear (depreciation)

Energy consumption

Maintenance and cleaning effort

Repair

When analysing consumption factors, it is easy to see that the energy consumption of a tunnel kiln car is an important factor, but far from being the only principle for deciding on a specific tunnel kiln car system. The kiln car is a structural component of the entire kiln system and is subject to significant loads. If this structural component is considered as an independent system, the respective functions must first be examined.

Target functions of a tunnel kiln car system

Good product quality

Minimal energy consumption due to reduced weight and thermal insulation (heat storage and heat transfer)

Chemical resistance to the tunnel kiln atmosphere and energy media under firing conditions

Thermal stability (under thermal shock and rapid temperature drops)

Mechanical strength (influenced by human factors)

Dimensional stability (interchangeability of refractory components, affected by reversible expansion)

Ease of maintenance and repair (replacement of wear parts)

Low investment and maintenance costs (short maintenance time)

Long service life

From the table it is clear that perfection cannot be achieved, but it is easy to maximise the fulfilment of the target functions of the kiln car while neglecting secondary functions. If the car weight is drastically reduced, the mechanical stability of the system inevitably decreases, which can of course be improved by using higher-quality materials, but this increases depreciation costs and maintenance risks.

Although the above is not fundamentally new, it should be kept firmly in mind when making relevant decisions. Because when the priority factor “energy saving” is set for the tunnel kiln car, other equally important functions should not be overlooked.

Figure 1 Two-layer corner U‑blocks, hollow pillars and various insulation methods with columns and protective panels (for side firing, e.g., single-layer roofing tile firing), thin protective panels


Today, up to 15 different materials are used in tunnel kiln car systems, ranging from various special materials with thermal shock resistance to refractory concrete and mortars, various fibre materials, and high-performance ceramics based on mullite and silicon carbide. Since no manufacturer produces all of these materials themselves, the user usually receives a complete solution from a single source, which can provide the same guarantee and service. At the design stage, the combination of different materials plays a very important role.

In designing a tunnel kiln car, the basic objectives are threefold: the car perimeter, the car lining, and the supporting structure or kiln furniture for setting the bricks.

For example, for a kiln car of size 7×6 m, the perimeter area accounts for 10%, the supporting structure area for 5%, and the lining area for 85%. This is common for modern kiln car designs.

In recent years, with the continuous development of firing technology, especially in material selection, the proportions of each of the above parts have been changing. A trend can be observed: materials that have already proven successful in the fine ceramics sector are also increasingly being applied in the clay brick industry (as shown in Figure 1).

Development of the tunnel kiln car perimeter structure

The perimeter of a tunnel kiln car mainly serves the following functions:

Labyrinth sealing (dependent on dimensional stability!)

Mechanical protection of the car lining

Protection of the car chassis from temperature effects

To this end, the following properties are required:

Dimensional stability

Strength under cold and hot conditions

Resistance to thermal shock or temperature changes

From a technical point of view, lightweight refractory concrete blocks are required to achieve these functions. Extruded large-format blocks based on cordierite and dry-pressed large-format blocks also based on cordierite – each possible solution has its advantages and disadvantages. The dry-pressed large blocks for the kiln car perimeter are discussed in more detail below.

Source of the Article
This article was written by the author Dr. Volker Hesse and originally published in the International Brick and Tile Industry (ZI-China Issue), 1996–1998, Chinese combined edition, Bauverlag GmbH. It is posted here for learning and reference purposes only. The copyright belongs to the original author and the original publisher.

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#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

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1 month ago | [YT] | 12

BRICTEC Engineering

Convective Rapid Drying of Hollow Bricks

(FH) Ralf König, Diploma Engineer, D-Krumbach

Abstract
Ralf König: Convective rapid drying of common bricks
The rapid development taking place in our industrial society demands a maximum of flexibility and readiness for innovation from firms. This also applies to drying technology in the heavy clay industry. A revolutionary step in this field is the introduction of the rapid drying technique. This article will give a graphic explanation of the principle of rapid drying for checker bricks.

Today’s rapid industrial development requires every enterprise to carry out technological innovations with maximum flexibility and speed, according to its own situation. This principle also applies to the field of drying technology in the brickmaking industry. About 100 years ago, green bricks were still dried in drying racks called “hacks” (i.e., natural drying). Today, this natural drying process is completely outdated. It allowed only seasonal production, with drying cycles of 2–3 weeks; the drying racks, or open‑air drying yards, could only be turned over 10–12 times a year. Without a sufficient number of drying racks, such a drying process could not adapt to continuous kiln production.

The first development in drying technology was the so‑called “large‑capacity drying shed”, built on top of ring kilns or zigzag kilns, using the rising hot air from the kiln surface for drying. This reduced the drying cycle to 10 days.

Today’s chamber or tunnel dryers use waste heat from tunnel kilns for artificial drying. The drying cycle depends on the product type and raw material properties, ranging from 1 to 3 days. Another revolutionary step in this field was the introduction of rapid drying technology, i.e., a drying time of only 1–2 hours. This article provides a graphic illustration of the rapid drying principle for high‑voidage hollow bricks and discusses its investment prospects.

Origin of Rapid Drying

In the mid‑1980s, factories in the Federal Republic of Germany that manufactured industrial catalysts began to develop. These catalyst bodies had a cross‑section of 150 mm × 150 mm, a length of about 1.0–1.2 m, and a very high void fraction. At that time, many of the dryers in these newly developed factories came from Novokaram. With regard to drying quality and drying time, the best results were achieved only when the green bodies were subjected to through‑flow and cross‑flow air. If the required forced drying exceeds a certain level, other production parameters also play a role, such as the air velocity through the holes and over the surfaces of the green bodies, as well as the heat‑carrying state of the gas as the bodies move forward. It was found that in some cases, because the saturated water vapor pressure in the gas greatly exceeded that of the green body, one‑third of the dried bodies were eventually damaged by adsorbed condensed water.

Microwave or high‑frequency heating would be ideal methods for heating the airflow. However, practically insurmountable problems were encountered. Two representative issues are mentioned here:

a. In some regions, high‑frequency heating is used only for metal equipment components such as sensors and sensor sleeves; naturally, the drying boards that have carried green bodies cannot be reused.
b. High‑frequency heating generates considerable static electricity in the heating zone. Even the very thin water film on the green body or between the green body and the plastic drying board can cause the board to scorch or even be damaged due to the discharge rate.

Therefore, the method of intermediate preheating by means of heatable drying boards (to prevent condensation on the green bodies) proved successful in practice. In fact, the experience gained in Novokaram’s catalyst drying inspired the idea of developing a rapid drying chamber for perforated bricks. In recent years, Novokaram has conducted extensive drying tests, with products ranging from large slabs (50 × 30 × 300 cm) to ordinary perforated bricks of traditional length. It has been consistently found that convective drying can fully achieve the required results.

Basic Principle of Convective Rapid Drying

The most familiar example of convective drying is blow‑drying hair with a hair dryer. The basic principle is that the drying medium (usually hot air) passes over the item to be dried, evaporating and removing moisture. Since evaporation requires heat, the drying medium gradually cools down and absorbs more water during the process (see Fig. 1). The ability of air to absorb moisture is limited by a temperature‑dependent value – the so‑called “saturated water vapor pressure”. If this value is exceeded, the excess natural moisture condenses in the form of fog or condensate, which is particularly dreaded in drying. The state of the air in a drying chamber is usually expressed in terms of temperature (°C) and relative humidity (%). Incidentally, when using an h‑x diagram, these two parameters are fundamental values.



Achieving Balance in the Flow State

The starting point for considering rapid drying is that the drying time of green bricks in traditional dryers is always determined by the bricks that dry slowest. This is directly related to the position of the green bricks in the dryer (see Fig. 2). For example, bricks on the outside dry much more slowly than those closer to the fan inside. Thus, as the drying air from the middle passage flows further, its flow velocity gradually decreases, its temperature drops, it becomes more saturated, and its moisture‑absorbing capacity declines. Even when the bricks on the inside of the dryer can be removed, the drying system must continue to operate until those poorly positioned bricks are also dry – even though most of the bricks in the dryer did not need the extended drying process.

Therefore, the first step in rapid drying is to balance the air flow conditions across the entire cross‑section of the direct air circulation. In this way, the drying process of each green brick is independent of its position in the dryer – i.e., it should be the same at any time during drying.



Increasing Air Velocity

As long as suitable climatic conditions exist, air velocity has a very specific influence on the drying rate. An increase in air velocity speeds up the drying rate accordingly. Low velocities produce a uniform laminar flow – an example of a relatively uniform flow in nature is a quietly flowing large river. Increasing the velocity makes the flow more turbulent. An analogy in nature is a mountain stream rushing through a gorge during snowmelt.

The implication of turbulence in drying is that there is a stationary air layer on the surface of the green body, the so‑called boundary layer. This layer hinders drying and becomes thinner during the drying process (see Fig. 3). Fast‑moving air particles absorb water particles much more easily than slower‑moving ones.

After increasing the air velocity, the drying rate rapidly accelerates, and the moisture content of the gas increases by more than 5%. Of course, at higher air velocities, the primary condition to be observed is that the continuous flow state of the gas must be uniform in order to achieve satisfactory results. That is, the green bodies over the entire cross‑section must be exposed to the airflow, and the air velocity must be the same. This is easier said than done, and under the conditions at the time, this experimental study took more than a year.

















Source of the Article
This article was written by the author Ralf König, Diploma Engineer (D‑Krumbach), and originally published in the International Brick and Tile Industry (ZI‑China Issue), 1996–1998, Chinese combined edition, Bauverlag GmbH. It is posted here for learning and reference purposes only. The copyright belongs to the original author and the original publisher.

Contact Information:
If any author or copyright holder considers the citation method on this website inappropriate, or wishes to modify/remove the content, please contact us via:
Email: [info@Brictec.com]
Tel: [029-89183545]
Address: [ZTE Industrial Park, No. 10 South Tangyan Road, Xi’an High‑tech Zone, China]
We promise to respond within 24 hours after receiving your notice and handle the matter promptly according to your request.

Academic Integrity Commitment:
Our company strictly adheres to academic integrity principles and respects the intellectual property rights of all scholars. If any improper citation exists, we express our deep apologies and will correct it immediately.

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1 month ago | [YT] | 8

BRICTEC Engineering

Brictec Summarizes Systematic Tunnel Kiln Maintenance System
Based on Brick Plant EPC Project Management Experience and Actual Operation


The maintenance of a tunnel kiln in a clay fired brick plant is by no means limited to kiln cars, fans, burners, high-temperature bearings, etc. In fact, it is a comprehensive maintenance system integrating a complete thermal system, a mechanical maintenance system, and an automatic control system.
Systematic maintenance in the daily operation and management of a brick plant is the guarantee of normal production. Based on years of brick plant EPC project experience and observations, Brictec has found that many brick plants lack systematic daily maintenance standards and inspection checklists. Brictec has now compiled the core tunnel kiln maintenance system for reference.



I. Overview of the Tunnel Kiln Core Maintenance System
Tunnel kiln maintenance can be divided into six major systems:

1. Kiln Structure System
2. Combustion System (Burners)
3. Ventilation and Thermal System
4. Transmission and Transport System
5. Automatic Control System
6. Auxiliary Heat Utilization System (Drying Chamber, etc.)

II. Kiln Structure System (Most Easily Overlooked, but Most Critical)

1. Kiln Lining Refractory Materials
Key inspection points: Refractory brick falling off / cracking, insulation layer pulverization, arch crown sagging, expansion joint failure.
Common problems: Air leakage, increased heat loss.

2. Kiln Steel Structure
Inspection items: Steel structure deformation, weld cracking, proper thermal expansion compensation.

3. Kiln Door System (Kiln Head / Kiln Tail)
Key points: Sealing performance (very critical), air leakage condition, smooth operation of opening/closing mechanism.



III. Combustion System (Core)

1. Burner (Natural Gas / Heavy Oil / Pulverized Coal)
Maintenance focus: Nozzle carbon deposition / clogging, stable flame shape, normal ignition system.
Common problems: Flame deflection, excessively long/short flame, local overburning or underburning.

2. Fuel Supply System
Natural gas system: Pressure reducing valve, flow meter, pipeline sealing.
Heavy oil system: Heating system, filtration system, injection pressure.



IV. Ventilation and Thermal System (Determines Firing Quality)

1. Induced Draft Fan / Exhaust Fan
Inspection: Air flow stability, impeller dust accumulation, vibration.

2. Kiln Pressure System
Key control: Stable micro-negative pressure, preventing cold air backflow.

3. Air Duct System
Inspection: Blockage, air leakage, dust accumulation.

4. Temperature Measurement System
Includes: Thermocouples, temperature controllers.
Problems: Temperature drift, measurement point distortion.



V. Transmission and Transport System

1. Pusher / Puller
Inspection: Thrust stability, stroke control, chain wear.

2. Rail System
Key points: Rail levelness, gauge, local settlement.

3. Kiln Car Sealing System
Inspection: Kiln car sand seal, sealing plate.

VI. Automatic Control System (Core of Modern Brick Plants)

1. PLC Control System
Inspection: Program stability, signal feedback.

2. Sensor System
Includes: Temperature, pressure, flow.
Problem: Error accumulation → firing curve out of control.

3. Actuators
Examples: Electric valves, damper actuators.
Inspection: Response speed, accuracy.

VII. Drying System (Strongly Correlated)
Maintenance includes: Drying fans, hot air pipes, humidity control.

VIII. Easily Overlooked but Very Critical Points (Summary of Experience)

1. Air Leakage Management (Top Priority)
The biggest hidden dangers of a tunnel kiln: Kiln door, kiln car, kiln body cracks.

2. Temperature Curve Consistency
Not just "temperature is high enough", but: whether the curve is stable + whether it is repeatable.

3. Combustion Uniformity
Determines: Brick color, strength, cracks.
Contact Information:
If any author or copyright holder believes that the citation method on this website is inappropriate, or wishes to modify/delete the relevant content, please contact us through the
following methods:
🌐Website: en.brictec.com/
📩 E-mail: info@brictec.com
📞WhatsApp:+86 181 8262 2677
Xi'an Brictec Engineering Co.,LTD
Address: [Zhongxing Industrial Park, No. 10, Tangyan South Road, High-tech Zone, Xi'an]
We promise to respond within 24 hours of receiving your notification and promptly handle the relevant content according to your requirements.
Academic Integrity Commitment: Our company strictly adheres to the principles of academic integrity and respects the intellectual property rights of all scholars. We sincerely apologize for any improper citations and will correct them immediately.


#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

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2 months ago | [YT] | 10

BRICTEC Engineering

Lithium Battery Anode Material Tunnel Kiln Burner Manufacturer
Brictec: Enabling Efficient Anode Carbonization Production with Core Thermal Technology

In the rapidly developing new energy lithium battery industry, the high-temperature carbonization and calcination of synthetic graphite anode materials serves as a core process determining product quality and production cost, imposing stringent requirements on thermal equipment. Brictec leveraging advanced European thermal technology and years of experience in tunnel kiln firing temperature control, has deeply focused on the R&D and application of tunnel kiln combustion systems. Transitioning from a thermal expert in traditional building materials tunnel kiln firing to a highly compatible tunnel kiln combustion system supplier for lithium battery anode materials, Brictec provides customized, efficient, stable, and cost-reducing tunnel kiln solid fuel burner solutions for lithium battery synthetic graphite precursor firing and carbonization enterprises.



I. Corporate Strength: From Building Materials Thermal Benchmark to New Force in Lithium Battery Thermal Technology

Founded in 2011, Brictec integrates senior Italian engineers and top domestic technical experts, combining cutting-edge European thermal concepts with a mature tunnel kiln burner manufacturing system to establish a complete industrial chain covering R&D, design, manufacturing, and full life-cycle services.

The company has deeply cultivated the field of tunnel kiln thermal equipment and drying processes for over a decade. Its core technologies cover key areas such as multi-fuel efficient combustion, precise temperature control, atmosphere protection, and kiln pressure control. Its product portfolio has expanded from traditional building materials sintering to high-end new material fields including lithium battery anode materials, carbon materials, and new energy minerals. Particularly in the high-temperature carbonization and calcination of synthetic graphite anodes, Brictec has formed unique technical barriers and application advantages.

With project implementation experience in over 30 countries and regions, along with a localized service network, Brictec has become a trusted core partner for tunnel kiln burners among domestic and international lithium battery enterprises. Driven by the core values of “leading technology, stable reliability, cost reduction and efficiency enhancement,” Brictec helps anode material manufacturers overcome thermal bottlenecks.



II. Core Technology: Specifically Customized for Anode Carbonization, Five Technical Advantages Leading the Industry

Addressing the high-temperature, continuous and stable, low-consumption, and environmentally friendly carbonization and calcination requirements of synthetic graphite anode materials, Brictec tunnel kiln burners break through traditional technical limitations, creating five core technical advantages that perfectly match anode production processes:

1. High-Efficiency Combustion Technology: High Fuel Utilization, Significant Cost Reduction

• Adapts to various fuel characteristics, achieving full and stable combustion. Compared to traditional burners, fuel consumption is reduced by 12%-18%, cutting the largest variable cost in anode production at the source.
• Precise air-fuel ratio control eliminates “over-temperature idle burning,” ensuring 100% of heat acts on material calcination without ineffective energy consumption.
• Adapts to multiple fuel types, allowing flexible switching based on energy prices to avoid the risk of single fuel price fluctuations.

2. Precise Temperature Control Technology: Uniform Temperature Field Ensuring Batch Consistency

• Equipped with a PLC-based fully automatic closed-loop temperature control system, linked in real-time with kiln car speed and temperature sensors.
• Achieves precise temperature control and linear adjustment across the entire kiln section, with uniform temperature distribution, ensuring consistent carbonization and performance of anode materials.
• Unmanned intelligent adjustment replaces manual operation, avoiding process fluctuations caused by human error and improving product yield.

4. Long-Life Design: Continuous Operation, Reduced Operation and Maintenance Costs

• Designed for high-temperature and demanding conditions of anode carbonization, using high-temperature alloy composite burners.
• Continuous service life is 2-3 times that of ordinary burners, significantly extending replacement cycles and reducing equipment procurement and maintenance frequency.
• Standardized quick-change design for wear parts, reducing replacement time to 1-2 hours, avoiding capacity loss due to prolonged downtime.
• Fully sealed structure reduces fuel waste and calcination loss, indirectly achieving cost reduction and efficiency enhancement.



III. Full-Process Service: More Than Equipment, Providing Systematic Thermal Solutions

Brictec understands that the stable and efficient production of lithium battery anode carbonization relies on deep integration of equipment, process, and service. Leveraging over a decade of tunnel kiln burner thermal project experience, the company provides customers with full life-cycle services from solution design to long-term operation and maintenance:

1. Customized Solution Design

• Tailors burner system solutions one-on-one based on customer’s anode material production capacity, process parameters, fuel type, and kiln specifications, ensuring perfect matching with the entire carbonization line to achieve optimal thermal efficiency.

2. Equipment Manufacturing and System Integration

• Self-develops and manufactures core burner equipment, supporting fully automatic control systems, kiln protection systems, and waste heat recovery systems, achieving seamless integration and intelligent interaction between the combustion system and the tunnel kiln, kiln cars, and conveying lines.

3. Installation, Commissioning, and Process Optimization

• A professional technical team provides on-site installation and commissioning services, optimizing combustion parameters, atmosphere parameters, and temperature control parameters to ensure rapid production ramp-up and stable operation, while also providing process training to customers.



IV. Project Cases: Empowering Lithium Battery Anodes with Remarkable Results

Brictec tunnel kiln burners have been successfully applied to high-temperature carbonization projects in tunnel kilns of multiple domestic lithium battery anode material enterprises. With stable performance and significant cost reduction effects, they have gained high recognition from customers:

• Fujian Lithium Battery New Material Project: GCS series burners operate stably, achieving the contracted product yield rate.

• Large-Scale Anode Material Production Line: The combustion system interacts intelligently with the tunnel kiln, reducing 2-3 on-site operator positions, saving over 800,000 RMB annually in labor and operation/maintenance costs.



V. Core Reasons to Choose Brictec

• Deep Technical Foundation: European technology + Chinese smart manufacturing, over a decade of tunnel kiln expertise customized for anode carbonization.
• Significant Cost Reduction: High-efficiency combustion + long service life.
• Reliable Quality Assurance: Fully sealed design + precise temperature control, high product yield, eliminating quality risks.
• Comprehensive Service System: Full-process customized services, global localized support, no worries.

Brictec, rooted in industrial tunnel kiln core thermal technology and guided by the carbonization needs of lithium battery anode materials, is committed to becoming the most trusted tunnel kiln burner expert for lithium battery enterprises. Looking ahead, Brictec will continue to innovate, providing more efficient, stable, and economical thermal equipment solutions for the high-quality development of the new energy industry, and work together with customers to create a new future for the lithium battery industry.

#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

Xi'an Brictec engineering Co., Ltd. (abbreviation: Xi'an Brictec) was founded in 2011. It employs senior Italian engineers to work with domestic experts, creating a strong technical team by combing the European and Chinese technologies. The company is devoted to provide clients multiple professional brick making solutions, including building structure bricks, decorative bricks,wall cladding bricks, paver and dry press bricks, etc.
🌐Website: en.brictec.com/
📩 E-mail: info@brictec.com
📞WhatsApp:+86 181 8262 2677
Xi'an Brictec Engineering Co.,LTD
Address: [Zhongxing Industrial Park, No. 10, Tangyan South Road, High-tech Zone, Xi'an]

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2 months ago | [YT] | 5

BRICTEC Engineering

Double Your Brick Plant’s Efficiency? The Secret Is in the Drying Car System！

Brictec Point of View:
(1) "Uniform drying is superior to rapid drying" for drying cars.
(2) "Galvanized anti-corrosion standards are a key quality indicator" for drying cars.
(3) "Stability of the automation system" for drying cars is one of the critical factors determining the efficiency and quality of high-end automated brick plants.

In modern clay fired brick production lines, the drying car (also referred to as dryer car) serves as an important conveying and supporting equipment linking the forming and firing processes. Its structural design and manufacturing quality directly affect the drying uniformity of green bricks, production efficiency, and equipment service life.

Common types of drying cars currently used in the industry primarily include:
(1) Steel structure drying car
(2) Cast iron drying car

As brick plants move towards high automation, long service life, and low maintenance, the manufacturing process for drying cars has gradually developed into a systematic quality control standard. Brictec, drawing on international advanced experience, proposes the following technical requirements for the design and manufacturing of drying cars.

I. Structural Design Principles of Drying Cars

1.1 Structural Strength and Stability Design
Drying cars are subjected to the following during operation:
(1) Load from multi-layer green bricks
(2) Thermal stress effects (temperature cycling)
(3) Long-term operational fatigue

Therefore, the structural design must meet the following requirements:
(1) Utilize high-strength steel sections or composite structural frames
(2) Perform finite element analysis (FEA) for strength verification on key load-bearing areas
(3) Prevent structural deformation or sagging over prolonged use

1.2 Structural Form Selection (Comparison of Different Materials)

Steel Structure Drying Car (Traditional)
Features: High strength, mature manufacturing process
Application: Multi-layer stacking, hollow brick production lines

Cast Iron Drying Car
Features:
(1) Excellent corrosion resistance
(2) Strong resistance to thermal deformation
(3) Good thermal stability
Advantages:
(1) Better suited for high-temperature flue gas drying systems
(2) Long service life
Application:
(1) Utilizing kiln waste heat for drying
(2) High-end automated brick plants

II. Thermal Performance Design Requirements for Drying Cars

2.1 Heat Transfer Performance Control
Drying car design must balance:
(1) Uniform heating of upper and lower brick layers
(2) Stability of drying rate
Key control points:
(1) Matching thermal conductivity of the car deck material
(2) Avoiding localized overheating or cold spots
(3) Ensuring uniform hot air flow through the brick layers

2.2 Multi-Layer Stacking Compatibility Design
When producing hollow bricks or low-strength green bricks: intermediate partition plates must be installed, typically dividing into 2–3 layers.
Design requirements:
(1) Sufficient strength of partition plates
(2) Ensuring ventilation gaps
(3) Avoiding localized pressure deformation

III. Corrosion Protection and Surface Treatment Processes for Drying Cars

3.1 Galvanized Anti-Corrosion Standard (Key Quality Indicator)
For brick plant equipment, drying cars typically employ: Hot-dip Galvanizing
Recommended technical standards:
(1) Galvanized coating thickness: ≥ 80–120 μm
(2) For highly corrosive environments (high humidity + high temperature): Recommended ≥ 120 μm
Process requirements: Surface sandblasting (Sa2.5 standard), uniform coating without missed spots, no blistering, peeling, or cracks

3.2 High-Temperature Protection Design
For high-temperature drying systems: key components require heat-resistant coatings to prevent oxidation and thermal fatigue.
Optional processes: Silicone heat-resistant coating, high-temperature anti-corrosion paint.


IV. Operating System and Track Matching Standards

4.1 Gauge and Wheel Track Design
Industry standards: Wheel track: 610 mm; Rail gauge: 600 mm; Rail specification: 8 kg/m
Design requirements: Reasonable wheel-rail clearance, ensuring stable operation without deviation

4.2 Wheel and Bearing System
Quality control focus:
(1) Adoption of high-temperature resistant bearing structures
(2) Dust-proof bearing seal design
Wheel materials must possess:
(1) Wear resistance
(2) Thermal fatigue resistance
(3) Impact resistance


V. Manufacturing Processes and Quality Control System

5.1 Welding Process Standards
Key structural welds use CO₂ gas shielded arc welding.
Welds undergo: Non-destructive testing (UT / MT) to prevent cracks and porosity.

5.2 Dimensional Accuracy Control
Key control points: Car deck flatness, consistency of wheel gauge, diagonal tolerance of the frame, ensuring that drying cars do not deviate or wobble during long-distance operation.

5.3 Factory Testing Standards
Prior to delivery, Brictec drying cars must undergo:
(1) Static load testing
(2) Dynamic operational testing
(3) Anti-corrosion coating inspection


VI. Advantages of Brictec Drying Car Systems
Combining international standards with engineering practice, Brictec drying cars offer the following advantages:

(1) Structural Advantages
• High-strength modular design
• Strong resistance to deformation
• Adaptable to various brick types

(2) Thermal Advantages
• Uniform drying
• Reduced cracking and deformation
• Improved product yield

(3) Durability Advantages
• High-standard galvanized anti-corrosion
• Suitable for high-temperature and high-humidity environments
• Long service life

(4) Operational Advantages
• Smooth operation
• Low maintenance costs
• Suitable for automated production lines

VII. Brictec Point of View

As a critical piece of equipment in fired brick production lines, the design and manufacturing quality of drying cars directly affect:
• Drying quality of green bricks
• Production efficiency
• Equipment operational stability
By introducing advanced manufacturing concepts, Brictec systematically optimizes structural design, thermal performance matching, anti-corrosion processes, and manufacturing standards, resulting in a high-performance drying car system tailored for modern brick plants.

This system effectively meets the comprehensive demands of high-end brick plants for:
• High efficiency
• Low energy consumption
• Long service life
•Automated operation
Contact Information:
If any author or copyright holder believes that the citation method on this website is inappropriate, or wishes to modify/delete the relevant content, please contact us through the
following methods:
🌐Website: en.brictec.com/
📩 E-mail: info@brictec.com
📞WhatsApp:+86 181 8262 2677
Xi'an Brictec Engineering Co.,LTD
Address: [Zhongxing Industrial Park, No. 10, Tangyan South Road, High-tech Zone, Xi'an]
We promise to respond within 24 hours of receiving your notification and promptly handle the relevant content according to your requirements.
Academic Integrity Commitment: Our company strictly adheres to the principles of academic integrity and respects the intellectual property rights of all scholars. We sincerely apologize for any improper citations and will correct them immediately.


#brickmakingmachine #tunnelkiln #bricks #brickmaker #brick #redbricks #brickmaker #clay #brickbuilder #brickwork #bricksmachine #brickmakingmachine #claybrickmakingmachine #redbrickmakingmachine #brickfactory #brickpackagingmachine #automaticbrickmakingmachine

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2 months ago (edited) | [YT] | 7