... the secondary grinding, material is discharged from the discharging. The machine is composed by feeding part,discharging part, rotation part and ... the drum is equipped with wear-resistant liner, which has good wear-resistance.The machine is with stable and reliable working condition ... installation,adjustment,operation We have various of Micro Ball Mill Machine,such as 900*1800, 900*2100, 900*3000, 1200 ...