rod mill, rod sand making machine, ball mill, grinding mill, mining machiney, mining equipment ball mill and rod mill is widely used in mineral dressing, building materials, chemical industry and other industries, for grinding medium hardness ore and other materials; it’s divided to dry-type and wet-type according the difference for grind types; according the difference of ore discharges, it’s divided to grid-type and overflow-type; according the difference of grind materials, it’s divided to ball mill and rod mill. Type