Brown fused alumina is made of bauxite, carbon material, and iron filings in the electric arc furnace after melting and reducing the brown artificial corundum, so this name. The main chemical composition of brown corundum is AL2O3, its content is 95.00%-97.00%, and contains a small amount of Fe, Si, Ti, etc.. Brown corundum is the most basic abrasive, which is widely used because of its good grinding performance, a wide range of application and low price.

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