Raymond mill processing calcite

• Publication time：2025-06-19
• Click：3

What is calcite?

Calcite is a widely distributed calcium carbonate mineral (CaCO₃) and is the main component of limestone and marble. It belongs to the trigonal crystal system, has diverse morphologies, and is mostly colorless or white, with a glassy to pearly luster. Its Mohs hardness is 3, and its density is 2.6 - 2.8 g/cm³. It plays an important role in industries such as industry, optics, and architectural decoration.

Application of Raymond Mill in Calcite Processing

Raymond mill performs outstandingly in the processing of non-metallic mineral powders. It is a key equipment for calcite processing and can process calcite into powders that meet industrial requirements.

Within 200 mesh: It is used in the fields of building materials and feed additives, such as putty powder, coatings, and animal feed.

325 - 400 mesh: It is widely used in industries such as plastic and rubber fillers and paper coatings.

The process of processing calcite with Raymond mill

Raw material preparation: Large calcite blocks are coarsely crushed to ≤30mm by jaw or hammer crushers. If the size is too large, it is likely to block the equipment and wear the components. If the moisture content exceeds 5%, it needs to be dried.

Powder grinding stage: Calcite particles enter the main machine. The grinding rollers revolve and rotate under the drive of the plum blossom frame, rolling and crushing the materials. The shovel blade feeds the materials to form a continuous material flow.

Classification stage: The crushed fine powder is carried into the classifier by the air flow. The classifier controls the fineness, and the coarse particles return to the main machine for regrinding. The qualified fine powder is initially collected by the cyclone collector, and then undergoes secondary dust removal by the pulse bag dust collector.

Finished product packaging: The powder is transported to the storage bin by a screw conveyor or a pneumatic conveying system, and is packaged or shipped in bulk according to requirements.

Precautions for processing calcite with Raymond mill

Whiteness: To avoid iron contamination, high manganese steel or ceramic materials can be selected for the grinding rolls and liners.

Fineness uniformity: The classifier plays a core role. Blade wear affects the classification effect, and regular inspection and replacement are required.

Impurity control: Iron and impurity removal at the raw material stage are important. Magnetic separation is used to remove iron, and a vibrating screen is used to remove impurities.

Output decline: Wear of the grinding rolls and blockage of the air duct are the causes. It is necessary to replace the grinding roll liners in a timely manner and clean the air duct.

Finished product being too coarse or too fine: This is caused by improper rotation speed of the classifier. It is necessary to adjust the rotation speed or replace the blades.

Dust overflow: This is caused by poor system sealing or insufficient air pressure of the fan. It is necessary to check the sealing and adjust the fan valve.

Conclusion

Calcite is an important calcium carbonate mineral, widely used in industries such as building materials, plastics, and papermaking. The Raymond mill is a key equipment for processing calcite, capable of efficiently producing powders with different finenesses to meet the needs of various fields. The processing flow includes crushing, grinding, classification, and collection. During processing, attention should be paid to whiteness control, fineness adjustment, impurity removal, and equipment maintenance. Reasonable operation and regular maintenance can ensure the stable quality of the powder, improve production efficiency, reduce dust pollution, and achieve environmentally friendly production.

Click on the picture to learn about the details of the CRRM Raymond Mill