... brown fused alumina are suitable for grinding carbon steel, normal alloy steel, malleable cast iron and hard bronze, etc. Brown fused ... Besides BFA, WFA, sintered mullite and fused mullite, we also manufacture and export other refractory and abrasives materials, such as dense ... corundum, tabular corundum, magnesia alumina spinel and a wide range of refractory bricks. We are always ready ...