Ball Mill > Grinding & drying > Raw Material Preparation > Cement .For grinding raw material and coal the air-swept ball mills are one proven grinding system. These mills are used to grind moist material that need to be dried using low-temperature air. A second applications for raw material and binding agents are ball mills with mechanical transport to the separator. Ball mills are having the.ball mill for the preparation,ball mill for the preparation,Preparation of ultra-fine dispersions of zinc oxide by simple ball .Ultra-fine aqueous dispersions of zinc oxide were prepared by a combination of wet ball-milling and ultrasonication in the presence of various concentrations of a process control agent (PCA). The particles in the dispersions were characterized by dynamic light scattering (DLS) and zeta potential measurements. Six hours of.