Clay brick is a kind of clay product with aluminum content in 30% ~ 50%. It is made of clay powder and various kinds of refractory adhesive, and then it is sintered in a kiln at high temperature.
         Clay brick is formed by mixing and pressing with high-pressure machine after being crushed by poor bauxite. The properties of clay brick made from different raw materials are also different, and the density and strength of clay brick made by pressing clay brick with different press are also different. The strength ratio of clay brick made by pressing clay brick with large press after firing is smaller The strength of the brick formed by the press is large. The raw material of clay brick is also a decisive factor to determine the quality of clay brick. The clay brick made of rough materials will be sintered after being pressed and formed, which is easy to crack and other phenomena. Impurities will affect the bonding performance of clay brick. If the sintering temperature is high, the impurities in the brick will be burnt out, which will form rough spots on the surface of clay brick Too much, no smoothness affects the appearance of the brick and the use effect of the brick.
         In the process of making clay brick, the raw materials should be selected first. The product performance and appearance made of the selected materials are qualitatively different, and the density, hardness and fire resistance of the brick are greatly improved. A better clay brick will be made by adding a large amount of high aluminum fine powder into the clay and then pressing it with a high-weight press. The surface of the fired clay brick is fine and glossy, and the density and hardness can be significantly improved. So when choosing clay refractory brick, we can roughly see the quality of the brick from the surface finish and surface flatness. It is also clay brick, but different quality, different aluminum content, different bulk density, and different price. Do not look at the price when purchasing fire-resistant products, but look at the quality of things.