brown fused alumina can be used in the area of the abrasive, sandblasting, precision casting,ceramics,metals and etc with high tensile strength. It also can be used as refractory materials. Tianlong's BFA is under the standard of FEPA,GB,JISR,ANSI. Generally,we use 5 sieves for sieving the material. And also can customize the sieving method for customers' special request. Processing technic: Air crush with the lowest bulk density, the shape of the material sharp Ball milling with the middle bulk density,the shape of the material between sharp and cube. Bamark with the highest bulk density,the shape of the material cube and circle.