calcium Clay powder

Low-creep clay bricks are now one of the commonly used refractory bricks in blast furnaces and hot blast furnaces, and as the wind temperature increases, the creep resistance of clay bricks increases. Low creep clay bricks are made of coke clinker with dense structure and high initial. And a few impurities as the main raw material, adding part of synthetic mullite and trilithon raw materials to configure into clay, which will be formed under high pressure, dried and fired at high temperature.

Clay bricks generally have an Al2O3 content of over 40% and an Fe2O3 content less than 2.0-2.5%. The raw material mixture consists of 65-85% clinker and 35-15% bonding clay. The crushed bonding clay and finely ground clinker are mixed and milled together, then formed under high pressure to produce a semi-dry mud. This mixture is fired at around 1400°C, resulting in good performance. Clay bricks exhibit a weak acidic nature at high temperatures and have a slightly lower resistance to alkaline slag erosion, but this ability improves with higher Al2O3 content. They have better thermal stability compared to silica bricks and magnesia bricks.