Calcium Carbonate grinding & processing
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.
The first stage: Crushing
Raw Calcium Carbonate material should be crushed by primary crusher to 15mm-50mm then can enter the mill.
The second stage: Milling
The small pieces of Calcium Carbonate after crushed are sent to the buffer silo by the bucket elevator, then goes into the grinding chamber of the mill by the vibrating feeder before grinding mill.
For fine powder processing, LM Vertical Mill, MTW European Type Grinding Mill and MRN Pendulum Roller Grinding Mill are most economical and reasonable equipment.; For ultrafine powder processing, LUM Ultrafine Vertical Mill, MW micro powder mill are most economical and reasonable equipment.; And for coarse powder processing, European Coarse Powder Mill and Straight-through Centrifugal Mill are more suitable equipments.
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.