Hongtai brown fused alumina for Brown Fused Alumina (BFA) A) High hardness B) High toughness C) We produce in accordance Brown Fused Alumina abrasive is electrically fused in an arc furnace from a mixture of bauxite, coke (anthracite) as main raw materal at high temperature.It's chemical composition contains Al2O3, TiO2, and small amount of SiO2, and Fe2O3, etc,. Microhardness:1800-2200 kg/mm2, ...