Calcite is a kind of calcium carbonate mineral the main ingredient is CaCO3, normally colorless or white, sometimes variegated. The theoretical chemical constitution is: CaO:56.03%, CO2: 43.97%, usually contains isomorph like MgO, FeO, MnO, etc. Moh’s hardness 3, density 2.6-2.94, with glassy luster. In China, calcite is found in Guangxi, Jiangxi, Hunan area. Guangxi calcite is famous for high whiteness and low acid non-soluble substance. Calcite is also found in North and North-east China, but usually accompanied with dolomite, the whiteness generally under 94, with high rate of acid non-soluble substance.
1.Under 200 mesh: used in feed supplement, calcium content more than 55.6%, without harmful component.
2.250-300 mesh: used as the raw material of plastic plant, rubber plant, coating plant, waterproof material plant, and can be also used for wall painting. Whiteness is higher than 85 degree.
3.350-400 mesh: used to produce buckle, pipe, and applied in chemical industry. Whiteness above 93 degree.
4.400-600 mesh: used to produce toothpaste and soap. Whiteness over 94 degree.
5.Over 800 mesh: used to produce rubber, plastic, cable and PVC. Whiteness over 94 degree. 6.Over 1250 mesh: applied in PVC, PE, paint, coating level production, paper making first coat and top coat with whiteness higher than 95 degree. Have the advantages of high purity, high whiteness, non-poisonous, odorless, low thin oiliness, low hardness.
Phrase one: raw material crushing
calcite will be crushed to 15mm-20mm fineness by crusher.
Phrase two: grinding
Crushed copper will be sent to the storage hopper by the elevator, and then the feeder will send the material to the main mill for grinding.
Phrase three: classifying
Grinded copper powder will be classified; coarse powder will fall back into the main mill waiting to be grinded again.
Phase four: production collecting
Qualified powder will flow with the air and be collected in the dust catcher, and then the finished powder will be transported to the product storage bin through discharge port. Lastly, the powder will be loaded by tank car or packed by packing machine.