Why Do Your Brick Blanks Deform and Crack? The Root Cause in Raw Material Processing

Brick blank deformation and drying cracking are the most common quality pain points in fired brick manufacturing, which directly increase the rejection rate and push up production costs. Many factory managers first adjust drying or sintering parameters when facing such problems, but they often ignore the root cause: unqualified raw material processing.

According to industry statistics, more than 60% of brick blank defects are caused by poor raw material preparation. When raw materials are not fully mixed and refined, the particle gradation is unreasonable and the plasticity is uneven, which will lead to inconsistent internal stress inside the blank. During the drying and sintering process, the uneven stress will cause deformation, edge cracking and even internal cracks that are difficult to observe with the naked eye, seriously affecting the strength and durability of finished bricks.

In the past, brick factories usually solved this problem by prolonging mixing time or adding extra crushing processes, but the effect was limited and the production efficiency was reduced. With the advancement of brick making technology, more and more factories have found that using a professional twin shaft mixing granulator to upgrade the raw material processing link is the most cost-effective way to reduce blank defects from the source. By completing mixing, kneading, refining and granulation at one time, the equipment can significantly improve the uniformity and plasticity of raw materials, and fundamentally reduce the occurrence of blank deformation and cracking.

Solve Blank Defects at the Source: Our SJB Twin Shaft Mixing Granulator

Our SJB series twin shaft mixing granulator for brick manufacturing is an upgraded multifunctional raw material processing equipment specially designed for ceramic bricks, tiles and various clay product production. Based on the structure of conventional dual-shaft mixers, it not only retains stable material mixing performance, but also integrates extrusion kneading, fine cutting and granulation functions, realizing one-stop raw material processing.

This advanced equipment thoroughly mixes and refines raw materials to form a uniform, compact and dense material structure. It effectively improves the forming quality of brick and tile blanks, increases product compactness, and greatly reduces blank deformation and cracking caused by internal stress, ensuring stable and high-quality finished products.

Equipped with a pneumatic clutch, the machine can flexibly adjust production capacity and running status according to different production demands. It features reasonable structural design, simple operation, strong durability and trouble-free long-term operation. After being put into use in many brick plants around the world, it has helped customers significantly reduce the blank rejection rate and improve the overall profitability of the production line.

Three standard models are available to match different output requirements:

• SJB250X80: Capacity 15-20 m³/h, Power 37 kW
• SJB300X80: Capacity 20-30 m³/h, Power 45 kW
• SJB400X100: Capacity 30-40 m³/h, Power 75 kW

If you are troubled by brick blank deformation, cracking or low product compactness, welcome to contact us. Our technical experts will analyze your production situation and provide you with a targeted raw material processing upgrade solution.