Calcite

What is calcite?

Calcite is a kind of calcium carbonate mineral. Its main component is CaCO3. It is generally transparent, colorless or white, sometimes mixed. Its theoretical chemical composition is as follows CaO:56.03% CO2: 43.97%, which is often replaced by isomorphism of MgO, FeO and MnO. Mohs hardness is 3, density is 2.6-2.94, with glass luster. Calcite in China is mainly distributed in Guangxi, Jiangxi and Hunan. Guangxi calcite is famous for its high whiteness and less acid insoluble matter in domestic market. Calcite is also found in the northeast of North China, but it is often accompanied by dolomite. The whiteness is generally below 94 and the acid insoluble substance is too high.

Application of calcite

Within 1.200 mesh:

It can be used in all kinds of feed additives. The content of calcium is more than 55.6%.

2. 250 to 300 mesh:

It can be used as raw material for plastic factory, rubber factory, paint factory, waterproof material factory and internal and external wall painting. The whiteness is above 85 degrees.

3. 350 to 400 mesh:

Used for manufacturing gusset plate, water pipe, chemical industry. The whiteness is above 93 degrees.

4. 400 to 600 mesh:

It can be used in toothpaste, paste and soap. The whiteness is above 94 degrees

800 mesh:

For rubber, plastic, cable, PVC whiteness above 94 degrees.

More than 6.1250 mesh

PVC, PE, paint, coating grade products, paper primer, paper top coating, whiteness above 95 degrees. It has high purity, high whiteness, non-toxic, odorless, low oil quality and low hardness.

Calcite milling process

Calcite milling is generally divided into fine calcite powder processing (20 mesh - 400 mesh), calcite superfine powder deep processing (400 mesh - 1250 mesh) and micro - powder processing (1250 - 3250 mesh)

The first stage: crushing of raw materials

The large calcite material is crushed by the crusher to the feed fineness (15mm-50mm) that can enter the mill.

The second stage: grinding

After crushing, small pieces of calcite are sent to the storage hopper by the elevator, and then they are evenly and quantitatively fed into the grinding chamber of the mill for grinding by the feeder.

Stage three: grading

The milled materials are graded by the grading system, and the unqualified powders are returned to the host machine for regrinding after being graded by the classifier.

Stage four: collection of finished products

The powder meeting the fineness will flow through the pipeline into the dust collector for separation and collection. The collected finished powder will be sent to the finished product bin by the conveying device through the discharge port, and then packaged by powder loading tanker or automatic packer.