However, the cost of chemical bleaching is relatively high, which is usually used for calcite concentrate that needs further purification after impurity removal.
This method can improve the chemical reaction activity of roasted products, greatly improve the whiteness of calcite, and obtain high-grade calcite grinder milling plant machines.
Therefore, in the actual production, it is recommended that the mine owners select qualified manufacturers for beneficiation test, and adopt a combination of multiple processes to improve the product quality of calcite.
Roasting purification: magnetization roasting, high-temperature roasting or chlorination roasting can be carried out by taking advantage of the differences in chemical composition and reaction activity between impurities and calcite to remove iron containing impurities, carbon containing impurities, sulfide and other impurities in calcite.