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Calcined kaolin with high whiteness and high oil-absorbing value as well as preparation method thereof

A technology for calcined kaolin and high oil absorption, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems that calcined kaolin cannot meet high whiteness and high oil absorption at the same time, and the production cost is high

Active Publication Date: 2019-05-14
内蒙古超牌新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a calcined kaolin with high whiteness and high oil absorption value and its preparation method to solve the technical problems that the calcined kaolin prepared in the prior art cannot satisfy both high whiteness and high oil absorption performance and high production cost

Method used

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  • Calcined kaolin with high whiteness and high oil-absorbing value as well as preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The calcined kaolin with high whiteness and high oil absorption value in this embodiment includes calcined kaolin and white carbon black adsorbed on the surface of the calcined kaolin, and the white carbon black is 0.5% of the mass of the calcined kaolin. Calcined kaolin with an average particle size of 2 μm. High whiteness and high oil absorption Calcined kaolin has a whiteness of 94% and an oil absorption of 81g / 100g.

[0042] The preparation method of calcined kaolin with high whiteness and high oil absorption value in this embodiment:

[0043] The No. 1 coal series kaolin raw material is coarsely ground in a jaw crusher and a roller crusher, then finely ground in a ball mill, then superfinely ground in a stirring mill with water, and centrifuged until at least 80% of the kaolin is obtained. Coal series kaolin raw material slurry with particle size less than 2 μm;

[0044] Be that the water glass of 10% mass concentration and the sulfuric acid that mass concentrati...

Embodiment 2

[0046] The calcined kaolin with high whiteness and high oil absorption value in this embodiment includes calcined kaolin and white carbon black adsorbed on the surface of the calcined kaolin, and the white carbon black is 1% of the mass of the calcined kaolin. Calcined kaolin with an average particle size of 2 μm. High whiteness and high oil absorption calcined kaolin has a whiteness of 95% and an oil absorption of 84g / 100g.

[0047] The preparation method of calcined kaolin with high whiteness and high oil absorption value in this embodiment:

[0048] The No. 1 coal series kaolin raw material is first coarsely ground by a jaw crusher, coarsely ground by a roller crusher, then finely ground in a ball mill, and then superfinely ground in a stirring mill with water, and centrifuged until at least 80 % coal-measure kaolin raw material slurry with particle size less than 2 μm;

[0049] Be that the water glass of 10% mass concentration and the nitric acid of 30% mass concentratio...

Embodiment 3

[0051] The calcined kaolin with high whiteness and high oil absorption value in this embodiment includes calcined kaolin and white carbon black adsorbed on the surface of the calcined kaolin, and the white carbon black is 0.5% of the mass of the calcined kaolin. Calcined kaolin with an average particle size of 2 μm. High whiteness and high oil absorption value Calcined kaolin has a whiteness value of 95% and an oil absorption value of 86g / 100g.

[0052] The preparation method of calcined kaolin with high whiteness and high oil absorption value in this embodiment:

[0053] The No. 2 coal series kaolin raw material is first coarsely ground in a jaw crusher and a roller crusher, then finely ground in a ball mill, then superfinely ground in a stirring mill with water, and centrifuged until at least 80% of the kaolin is obtained. Coal series kaolin raw material slurry with particle size less than 2 μm;

[0054]Be that the water glass of 10% mass concentration and the sulfuric aci...

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Abstract

The invention discloses calcined kaolin with high whiteness and high oil-absorbing value as well as a preparation method thereof. The calcined kaolin with high whiteness and high oil-absorbing value comprises calcined kaolin and white carbon black adsorbed on the surface of the calcined kaolin; and the white carbon black is 0.5 to 1.5 percent of the mass of the calcined kaolin. According to the calcined kaolin with high whiteness and high oil-absorbing value, the whiteness and the oil-absorbing value of the calcined kaolin are increased, and the calcined kaolin with high whiteness and high oil-absorbing value and capable of meeting the requirements of coating paper is produced.

Description

technical field [0001] The invention relates to the field of kaolin preparation, in particular to calcined kaolin with high whiteness and high oil absorption value. In addition, the present invention also relates to a preparation method comprising the above calcined kaolin with high whiteness and high oil absorption value. Background technique [0002] Calcined kaolin is an inorganic material. It is calcined soil formed by calcining coal series kaolin at a high temperature of 900 ° C to 1200 ° C. It has high whiteness. Mineral raw materials necessary for ten industries. For coated paper and paperboard, mainly including lightweight coated paper, coated paper and coated paperboard, in addition to fillers, pigments are also needed, and the proportion of kaolin used for fillers and pigments is 20-35% of the paper weight. When kaolin is used in papermaking, it can give the paper good covering performance and good coating gloss performance, and can also increase the whiteness, o...

Claims

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Application Information

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IPC IPC(8): C01B33/40
Inventor 林炼王宇轩陈建文刘世明刘松柏冯建明
Owner 内蒙古超牌新材料股份有限公司
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