what is brown fused alumina/BFA/A
Brown Fused Alumina (BFA) is an artifical abrasive and refractory material, mainly composed of aluminum oxide (Al₂O₃), usually containing a small amount of other oxide impurities (such as iron oxide, silicon oxide, etc.). It is made by high-temperature smelting of bauxite (mainly aluminum oxide) and other raw materials, and is named for its brown color. …