Calcium carbonate is a common inorganic compound. According to different production methods, calcium carbonate can be divided into heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate and crystalline calcium carbonate. Heavy calcium carbonate is produced by directly crushing natural limestone, calcite, etc. by mechanical methods (milling equipment such as Raymond mill). Light calcium carbonate is prepared by calcining limestone at high temperature, digesting with water, carbonizing carbon dioxide, and finally dehydrating, drying, and pulverizing.
Calcium Carbonate powder can be generally divided into coarse powder processing (0-3MM), fine powder processing (20 mesh-400 mesh), and ultrafine powder deep processing (400 mesh-1250 mesh) and micro powder processing (1250 mesh-3250 four types.
The third stage: Grading
The powdered material is separated by the classifier, the unqualified powder will be returned to the grinding mill chamber for re-milling.
The fourth stage: Collecting
Fine powder complies with the fineness and airflow go through the pipe into the dust collector for separation and collection. The finished powder will be transmitted to bucket elevator by screw conveyor and lifted into Silo for storage by Bucket elevator , then packed uniformly by powder tanker or automatic packing machine.
