CITICHL is the key large enterprise for the design and manufacture of grinding equipment in China. The manufacture of grinding equipments begins from 1960s. Since 1980s, our company has cooperated with many famous foreign grinding manufacturers on technology introduction, cooperating manufacture and development. We have in particular long experience in mill testing, study, design, made and filed operation, and made advancement and innovation on foreign technologies. Now we have established our own grinding laboratory, formed various type mills to series, totally produced nearly 1000 sets, and exported to Australia, Russia, Pakistan, Zambia, Indonesia, Vietnam, etc. We have produced the overflow ball mill with the largest size Φ5.5�8m, Φ8.5�4m semi-autogenous mill, Φ5m vertical cement raw mill, etc. Our company possesses the national first-rate study and design group on mills, perfect experiment and testing measures, and superior manufacturing equipment and technology on large-scale mills. We have formed complete supplying system for mill experiment, study, design, manufacture, testing and service. Application Scope: For grinding of various ores and rocks, widely used in non-metal mines, ferrous and non-ferrous metal mines, construction material, hydraulic engineering etc. Working principle: There are many grinding medium balls inside the continuous rotating drum (there are many rods inside the rod mill). The continuous feeding material is broken by the shooting balls which are coming from a certain height of the wall of the drum; The falling medium and material would produce irregular slip and roll during the rotation of the drum, and the material is pulverized fine by the grinding effect among medium, drum-lining and materials. The dynamic material level different is produced by continuous forced material charge and discharge, consequently more and more fine material is slow out from the drum, and finish the grinding process inside the drum.
