Kaolin

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Introduction

Pure kaolin has high whiteness, soft, easily dispersed suspension in the water, good plasticity and high adhesion, excellent electrical insulation properties; with good acid-soluble, low cation exchange capacity, better fire resistance and other physical and chemical properties. Therefore kaolin is widely used in papermaking, ceramics, rubber, chemicals, paints, pharmaceuticals and defense industries, ect. Kaolin has wide application in the paper industry. There are two main areas, one is filler in paper making process, and the other is pigment in used in coating industry.

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Kaolin grinding process

1.Beneficiation, crushing, grind into powder of 325 mesh or less;
2.Mixing powder, water and disperser,and beating,make it into 4500-6000mesh;
3.The ultra fine slurry was dried and beat,then calcinated , adding 1-3% white agents of the total weight when calcinated, White agents is made by coal, sodium sulfate and sodium chloride, by weight 10:0.3:0.2 mix. Calcination temperature should be 970-990 ℃;
4. Beating and packed in bags;

Case

Application field

Desulfurization

Chemical industry

Metallurgy

Agriculture

Building

Building materials

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