Production method of heavy calcium carbonate

There are two production processes for heavy calcium carbonate. Dry production process: first, calcite, limestone, chalk, shells, etc. transported from the quarry are hand-selected to remove gangue; then the limestone is roughly crushed with a crusher, and then crushed with a Raymond (pendulum) mill The fine limestone powder is obtained, and finally the milled powder is classified by a classifier, and the powder that meets the particle size requirements is packaged and stored as a product, otherwise it is returned to the mill for grinding again. Wet production process: First, the dry fine powder is made into a suspension and placed in a mill for further pulverization. After dehydration and drying, ultra-fine heavy calcium carbonate is obtained.