Industry News

Focus on the field of micro powder grinding !

What equipment does the calcium carbonate powder production line need?

Source:nclirik Posted:2021-07-22
Calcium carbonate is an inorganic compound and the main component of limestone and calcite.

After calcium carbonate is ground, it has a wide range of uses in industrial fields, such as fillers in rubber, plastics, papermaking, coatings and other industries; it can be used to produce building materials, glass and cement, etc.;
Calcium carbonate can also be used as a medium for industrial wastewater , SO₂ eliminating agent in exhaust gas containing SO₂, dairy cow feed additives and anti-sticking agent for linoleum;
Calcium carbonate can also be used as raw materials for tooth powder, toothpaste and other cosmetics.

calcium carbonate

Calcium carbonate is widely used in industrial fields, and it is also an important building material.

However, calcium carbonate needs to be ground before it can be reasonably and effectively used.

The production process of calcium carbonate can be roughly divided into two links: crushing and grinding.

Calcium carbonate crushing process:

1. Large pieces of calcium carbonate are evenly fed into a broken (jaw crusher) by a vibrating feeder through the silo for coarse crushing.
The coarsely crushed calcium carbonate is sent to the second crusher (impact crusher or cone crusher) by a belt conveyor for further crushing.

2. The finely crushed calcium carbonate is sent to the vibrating screen by a belt conveyor for screening, and several different sizes and specifications of calcium carbonate are screened out. The calcium carbonate that meets the particle size requirements is sent to the finished product pile by the finished belt conveyor.

3. The calcium carbonate that does not meet the particle size requirements is returned by the belt conveyor to the impact crusher or cone crusher for re-crushing, forming a closed circuit for multiple cycles. In order to protect the environment, auxiliary calcium carbonate processing and dust removal equipment can be equipped.

calcium carbonate jaw crusher  

Calcium carbonate powder grinding process:

The grinding process equipment on the market includes: YGM Raymond mill, MTM high-pressure mill, HGM ultra-fine mill, CLUM vertical mill, ball mill, etc.

Powder preparation within 200 mesh: Raymond mill, high pressure mill
Powder preparation between 250 mesh and 300 mesh: Raymond mill, high pressure mill
Powder preparation between 300 mesh and 1250 mesh: high pressure mill, HGM micro grinding mill, CLUM ultra-fine vertical mill
1250 mesh-3000 mesh: HGM micro grinding mill, CLUM ultrafine vertical mill

The following mainly introduces the milling process of the two most commonly used mills, YGM Raymond mill and HGM micro grinding mill

The calcium carbonate grinding process of YGM Raymond Mill:

YGM Raymond mill is a very commonly used milling equipment in the milling industry. It is suitable for processing more than 280 non-flammable and explosive minerals, chemicals, building materials and other industries with Mohs hardness not greater than 9.3 and humidity below 6%. The fine powder preparation of this material has a good powdering effect for the processing of non-metallic ores.

YGM Raymond Mill
The working principle of the YGM Raymond mill is that the grinding roller is tightly rolled on the grinding ring under the action of centrifugal force, and the material is scooped up by the shovel and sent to the center of the grinding roller and the grinding ring. The material is crushed into powder under the action of the grinding pressure, and then Under the action of the fan, the powdered materials are blown up and passed through the analyzer. The materials that meet the fineness requirements pass through the analyzer, and the materials that fail to meet the requirements return to the grinding chamber to continue grinding, and the materials through the analyzer enter the cyclone separator for separation and collection.

The calcium carbonate grinding process of HGM micro grinding mill:

HGM micro grinding mill can be used to process various non-flammable and explosive mineral materials with Mohs hardness below 6 and humidity below 7%. The fineness of the finished product can be between 200 mesh and 2500 mesh. Arbitrary adjustment, the fineness of part of the grinding material can also reach 3000 mesh.
HGM micro grinding mill
1. The large piece of calcium carbonate material is crushed into small particles ≤20mm by the crusher
2. The calcium carbonate particles are sent to the storage bin by the elevator,
3. Through the vibrating feeder and the inclined guide tube, the calcium carbonate material is evenly sent to the bulk tray on the upper part of the turntable in the main engine.
4. When the mill is working, the main motor drives the main shaft and the turntable to rotate through the reducer, and the turntable drives dozens of grinding rollers to rotate and roll in the grinding ring raceway through the roller pins on the edge.
The material scatters to the periphery under the action of centrifugal force and falls into the magic cavity.
It is impacted, rolled and ground by the grinding roller in the ring of the grinding ring.
5. After three or four layers of loops, it is repeatedly ground into powder. The high-pressure fan sucks external air into the machine through suction, and brings the crushed materials into the powder concentrator.
6. The high-speed rotating impeller screens it, the unqualified coarse powder falls back and regrinds, the qualified fine powder enters the cyclone powder collector with the airflow, the dust falls, and the finished product is discharged by the discharge valve at the bottom.

Shanghai Clirik Machinery Co., Ltd. is a provider of calcium carbonate processing equipment and calcium carbonate crushing equipment.
CLIRIK provides a variety of calcium carbonate crushers and calcium carbonate grinders according to the actual needs of customers.
CLIRIK calcium carbonate processing equipment, calcium carbonate production line, calcium carbonate processing equipment, calcium carbonate crushing equipment and calcium carbonate grinding equipment have been exported to many countries and regions.
Welcome to leave a message, online consultation or contact us via email or WhatsApp.
Email: [email protected]
WhatsApp: +8613512155195/+8613917147829 
Get Quote