Calcium carbonate

Calcium carbonate

Introduction

Calcium carbonate is a common inorganic compound commonly known as limestone, limestone, stone powder, etc., and is found in rocks such as vermiculite, calcite, chalk, limestone, marble, and travertine. Calcium carbonate can be classified into heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate, and crystalline calcium carbonate depending on the production method. Heavy calcium carbonate (heavy calcium) is obtained by directly pulverizing natural limestone, calcite, etc. by a mechanical method (Raymond mill or the like). Light calcium carbonate (light calcium) is obtained by calcining limestone at high temperature, water digestion, carbonization of carbon dioxide, and finally dehydration, drying and pulverization.

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Calcium carbonate grinding process

First stage: broken
The bulk material of calcium carbonate is crushed by the crusher to the incoming fineness (15mm-50mm) which can enter the mill.
Second stage: milling
The crushed calcium carbonate small material is sent to the silo through the hoist, and then uniformly and quantitatively fed into the mill grinding chamber through the vibrating feeder for grinding.
Fine powder processing generally uses LM vertical mill, MTW European version of mill, TGM overpressure trapezoid mill; ultrafine powder processing generally uses LUM ultra-fine vertical mill, MW ring roller micro-grinding machine; sand or coarse powder The processing uses CM European coarse grinding and straight-through centrifugal grinding.
Phase III: Grading
The ground material is graded by a powder separator, and the unqualified powder is sorted by the classifier and returned to the main machine for re-grinding.
The fourth stage: powder collection
The fine powder conforms to the airflow and enters the dust collector through the pipeline for separation and collection. The collected finished powder is sent to the finished silo through the discharge device through the discharge port, and then uniformly packaged by the powder tanker or the automatic baler.

Case

Application field

Desulfurization

Chemical industry

Metallurgy

Agriculture

Building

Building materials

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