The raw material of corundum castable is fused white corundum, fused corundum or brown corundum. No matter what kind of raw materials are used as aggregate, particles with different particle sizes should be mixed in proportion, and corundum coarse particles, medium particles and powder should have appropriate formulas, and then combined with Qihe additives (silica micropowder, water reducer and explosion-proof fiber), they should be added to the raw materials and fully tempered.