Roller ball grinding machine. Roller Mill Machine For Mine Grinding . 1. The Roller Mill Description. The Roller Mill ball mill is a key equipment to grind the crushed materials, and the ball mill is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass.4. Double support rigid structure the grinding roller and grinding ring will not move. 5. All-around feeding and high efficiency. 6. Compared with the same type machine, HGM Ultrafine Powder Grinding Mill has the features of small vibration, convenient maintenance, highly reliable quick-wear part, low.