Application: Mainly used in the cement industry: the back-grinding coarse powder after the powder separator and the clinker pre-pulverization before the fine powder before iron removal, to prevent iron. Iron particles accumulate in the mill, thereby improving the production efficiency of the mill and the specific surface area of the cement: iron removal before the cement filling process can. The iron impurities mixed in the cement are automatically cleaned and discharged to ensure the stable operation of the production.