Detail BROWN ALUMINIUM OXIDE
Brown Aluminium Oxide is fused in an electric–arc furnace by high temperature. Its main raw material are bauxite & anthracite. Brownish in colour, its chemical composition consists of Al203, a small mount of SiO2, TiO2 and Fe2O3, etc.
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The micro hardness is 1800 to 2200 kg/m2 . The toughness is higher than silicon carbide. Abrasives articles made of it are suited for grinding metals malleable iron and hard high-class refractory products.