... be used for producing soft, hard, high purity, metal powders and many other. Applications of Superfine Ball Mill Production ... quartz, feldspar, α-alumina, glass fine bead, etc.(4) Metal powders: zinc powder, aluminum powder, iron powder, and molybdenum powder, etc ... the relatively coarse and fine powders will be separated. Qualified powders will be collected; and unqualified powders will be re-crushed. ...