The ball mill pulverizes the material by continuous impact and rolling grinding during the simplification of the material. According to the filling rate of the steel balls in the mill, it is divided into a self-grinding machine and a semi-autogenous grinding machine.
According to the filling rate of the rolling mill steel ball, it is divided into a self-grinding machine and a semi-automatic grinding machine. In order to influence the accumulation of stones, it is allowed to add about 3% of large balls (φ80 to φ120) to the self-grinding mill, and semi-self-grinding balls. The filling amount is generally 8% to 12% and the height is up to 15%. The discharge types are divided into dry and wet. In general, wet dry self-developing machines and semi-automatic grinding machines only consider the special case of water-free zones or dry goods.
Most of the current processes and main equipment are: roller ball mills or clinker crusher ball mills. The two main equipment consists of vertical milled cement. The first is to make a major breakthrough in the cement grinding process. Energy-saving grinding machines have the advantages of vertical grinding itself, such as crushing, powder selection and air transportation. The vertical grinding in cement grinding can achieve ideal results, such as high output, low energy consumption, small footprint and simple process system.
Cement grinding vertical grinding is another new field of vertical milling technology, which has been successfully applied after vertical milling and slag grinding. The new market for iron ball mills and ball mills meets the policy of energy saving. The market prospects in the later period are very broad and are of great significance for promoting the transformation and upgrading of China's cement industry.