How Ceramic Auto Bricks Are Made in Bangladesh – From Clay to Perfection

Ceramic auto bricks don’t just happen; they are engineered. Each brick carries science, precision, and sustainability baked into its body. Most important, the process eliminates the old, smoky kilns and replaces them with clean, automated production lines.

How Ceramic Auto Bricks Are Made in Bangladesh – From Clay to Perfection


Step 1: Selecting and Preparing the Clay

Every great brick begins with great clay. Factories in Bangladesh, especially those in Bogura, Gazipur, and Mymensingh, use fine alluvial clay rich in silica and alumina. The clay goes through a series of crushers, grinders, and mixers. Because impurities affect strength, the clay is screened several times before forming.

Step 2: Shaping the Bricks Automatically

Automatic extruder machines then press and shape the clay into perfect sizes—commonly 240×115×70 mm. Unlike manual molds, these machines guarantee uniform dimension and density. Therefore, walls made of ceramic auto bricks look neat and require less plaster.

Step 3: Drying the Bricks Naturally or Mechanically

Before firing, the green bricks must lose moisture. Large drying chambers or natural sheds reduce water content to around 8–10%. This step prevents cracks during firing. Besides that, some factories use gas-heated dryers to speed up the process during monsoon seasons.

Step 4: Firing in Tunnel Kiln

The real magic happens here. Bricks are loaded into a tunnel kiln, where temperatures gradually rise to around 950–1050°C. This continuous system recycles heat efficiently, saving 30–40% energy compared to old fixed chimneys. It also cuts down carbon emissions drastically.

Step 5: Cooling and Sorting

After firing, bricks cool down naturally inside the tunnel. Automated sorters then separate perfect bricks from broken ones. Only top-grade pieces, having compressive strength above 3000 PSI, are packed for delivery.

Step 6: Quality Control

Every batch undergoes tests for size accuracy, strength, and water absorption. Because ceramic auto bricks are machine-made, the rejection rate is very low—usually below 3%.

Machinery Used in Ceramic Brick Plants

Equipment NameFunctionOrigin
Box FeederFeeds raw clay evenlyChina / Italy
Double Roller CrusherCrushes and mixes clayChina
ExtruderShapes bricks automaticallyGermany / China
Tunnel KilnContinuous firing systemEurope / China
DryerRemoves moistureChina
Packing LineStacks and wraps bricksLocal/Imported

Environmental Benefits

Ceramic auto bricks use clean energy, minimize topsoil loss, and release almost zero black smoke. Therefore, they help Bangladesh reduce air pollution while supporting green growth.

Conclusion

The journey from clay to ceramic is both art and engineering. Bangladesh’s factories now stand among the most modern in South Asia, turning local resources into world-class building materials. The future of brickmaking is automated, efficient, and proudly Bangladeshi.

Want to set up your own ceramic auto brick factory? Contact experts today:
📞 01716752370
🌐 www.cbecl.com

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