A neutral refractory with an Al2O3 content of 48% or more. It is formed by bauxite or other raw materials with higher alumina content. High thermal stability and refractoriness above 1770 °C. It has good slag resistance and is used for laying lining of steelmaking electric furnace, glass melting furnace and cement rotary furnace.

High-load soft, low-creep high-aluminum brick [1] is a high-grade refractory material made of special grade bauxite, fused corundum, and fused mullite. The product has the advantages of low temperature creep, strong corrosion resistance, good thermal shock resistance, etc. It is suitable for large and medium-sized hot blast stoves. It opens up the next step for the localization of high-quality, high-grade imported refractory materials required for China's new hot blast stoves. The road to success has been included in the national “Spark Program” project.

The production process of high alumina bricks and multi-crop clay bricks is similar. The difference is that the proportion of clinker in the batching is high, which can be as high as 90-95%. The clinker needs to be sorted and sieved to remove iron before crushing. The firing temperature Higher, such as I, II and other high alumina bricks used in tunnel kiln firing is generally 1500 ~ 1600 ° C.

China's production practice proves that high-aluminum clinker is carefully sorted and graded before being crushed, and it is stored in grades by using bauxite clinker and combined clay to improve the product quality.

Mainly used for masonry blast furnace, hot blast stove, electric furnace top, blast furnace, reverberatory furnace, rotary kiln lining. In addition, high-aluminum bricks are also widely used as open-hearth regenerative lattice bricks, plugs for sprue systems, nozzle bricks, and the like. However, the price of high alumina bricks is higher than that of clay bricks, so it is not necessary to use high alumina bricks where clay bricks can meet the requirements.