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Multistage classifying and grading method of calcium carbonate powder

A classification method and multi-class classification technology, which are used in solid separation, chemical instruments and methods, and separation of solids from solids by air flow, etc., to achieve the effect of concentrated particle size and high extraction efficiency.

Active Publication Date: 2019-09-17
四川玉塑新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above two inventions all involve the classification of light calcium carbonate, how to obtain light calcium carbonate particles with concentrated particle size and how to improve the extraction rate of calcium carbonate particles in each particle size range are not described in detail , so the present invention provides a calcium carbonate powder multi-level classification classification method

Method used

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  • Multistage classifying and grading method of calcium carbonate powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Convey the powdered calcium carbonate with a particle size range of 0-37um to the classifier, and set the air volume for the first time to 55m 3 / h, three powders with a particle size range of 20-37um, 10-20um and 0-10um are obtained through preliminary classification, which are called primary, secondary and tertiary powders respectively; the primary powder is sent into the ventilator, and the secondary The air volume is set to 75m 3 / h, to obtain two powders with a particle size range of 20-37um and 0-20um, which are called the primary coarse powder and the primary fine powder respectively; send the secondary powder into the ventilator, and set the secondary air volume to 80m 3 / h, the particle size ranges obtained are three powders of 20-37um, 10-20um and 0-10um, which are respectively called secondary coarse powder, secondary fine powder and secondary ultrafine powder; send the tertiary powder obtained in Into the ventilator, the secondary air volume is set to 85m ...

Embodiment 2

[0019] Convey the powdered calcium carbonate with a particle size range of 0-37um to the classifier, and set the air volume for the first time to 85m 3 / h, three powders with a particle size range of 20-37um, 10-20um and 0-10um are obtained through preliminary classification, which are called primary, secondary and tertiary powders respectively; the primary powder is sent into the ventilator, and the secondary The air volume is set to 80m 3 / h, to obtain two powders with a particle size range of 20-37um and 0-20um, which are called the primary coarse powder and the primary fine powder respectively; send the secondary powder into the ventilator, and set the secondary air volume to 85m 3 / h, the particle size ranges obtained are three powders of 20-37um, 10-20um and 0-10um, which are respectively called secondary coarse powder, secondary fine powder and secondary ultrafine powder; send the tertiary powder obtained in Into the ventilator, the secondary air volume is set to 89m ...

Embodiment 3

[0021] Convey the powdered calcium carbonate with a particle size range of 0-37um to the classifier, and set the air volume for the first time to 75m 3 / h, three powders with a particle size range of 20-37um, 10-20um and 0-10um are obtained through preliminary classification, which are called primary, secondary and tertiary powders respectively; the primary powder is sent into the ventilator, and the secondary The air volume is set to 77m 3 / h, to obtain two powders with a particle size range of 20-37um and 0-20um, which are called primary coarse powder and primary fine powder respectively; send the secondary powder into the ventilator, and set the secondary air volume to 84m 3 / h, the particle size ranges obtained are three powders of 20-37um, 10-20um and 0-10um, which are respectively called secondary coarse powder, secondary fine powder and secondary ultrafine powder; send the tertiary powder obtained in Into the ventilator, the secondary air volume is set to 87m 3 / h to ...

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Abstract

The invention discloses a multistage classifying and grading method of calcium carbonate powder. The method comprises the steps that powder calcium carbonate is fed to a grading machine, the air volume ranges from 55 m3 / h to 85 m3 / h, and first-stage powder, second-stage powder and third-stage powder are obtained; the first-stage powder is fed into a ventilator, the air volume ranges from 75 m3 / h to 80 m3 / h, and first-stage coarse powder and first-stage fine powder are obtained; the second-stage powder is fed into the ventilator, the air volume ranges from 80 m3 / h to 85 m3 / h, and second-stage coarse powder, second-stage fine powder and second-stage superfine powder are obtained; the third-stage powder is fed into the ventilator, the air volume ranges from 85 m3 / h to 89 m3 / h, and third-stage coarse powder, third-stage primary fine powder and third-stage primary superfine powder are obtained; the third-stage primary superfine powder is fed into the ventilator, the air volume ranges from 90 m3 / h to 92 m3 / h, and third-stage superfine powder and third-stage fine powder are obtained; and the third-stage primary fine powder is fed into the ventilator, the air volume ranges from 89 m3 / h to 91 m3 / h, and third-stage superfine powder, third-stage fine powder and third-stage coarse powder are obtained. According to the grading method, the extraction efficiency is high, and particle sizes are concentrated.

Description

technical field [0001] The invention relates to the technical field of calcium carbonate classification, in particular to a multi-level classification and classification method for calcium carbonate powder. Background technique [0002] Calcium carbonate powder is a very important inorganic powder filler. Calcium carbonate is mainly produced from limestone, marble and calcite. As an inorganic filler, calcium carbonate has the effects of wear resistance, high temperature resistance and flame retardancy, so its products have very important applications in technical fields such as paper industry, plastic industry, coating industry and rubber industry. Calcium carbonate products can be divided into super-heavy and light calcium carbonate according to the processing technology. At present, the grading process is the most critical process to determine the quality of calcium carbonate products. The existing calcium carbonate grading process adopts airflow crushing. Although this c...

Claims

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Application Information

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IPC IPC(8): B07B9/02
CPCB07B9/02
Inventor 彭庆跃刘军陈曹军
Owner 四川玉塑新材料科技有限公司