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Method for preparing attapulgite paper filler

A technology of attapulgite and modified attapulgite, which is applied to paper, papermaking, textiles and papermaking, etc., to achieve the effects of improving environmental protection efficiency, improving adsorption capacity, and improving hydrophobicity

Inactive Publication Date: 2017-07-14
MINGGUANG GUOXING ATTAPULGITE CLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a paper filler, attapulgite has excellent performance, but due to the difference in particle size and surface morphology, the paper-forming performance after filling will also be different, and it needs to be modified to improve its strength, toughness and other properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of attapulgite paper filler, comprising the steps of:

[0027] (1) Pretreatment of attapulgite: Take attapulgite and crush it until the particle size is 18 mesh. While stirring, add attapulgite to distilled water with a solid-to-liquid weight ratio of 1:15. After stirring at 150 r / min for 2 hours, centrifuge the obtained slurry with a centrifuge to remove detritus minerals, and obtain attapulgite clay after filtering and drying;

[0028] (2) Preparation of the primary finished product of attapulgite: add the attapulgite concentrate obtained in step (1) into deionized water in a certain proportion to obtain attapulgite suspension, filter and stand to dry to obtain attapulgite primary product;

[0029] (3) Water vapor modification treatment: raise the primary product of attapulgite prepared in step (2) from room temperature to 300°C, and inject inert gas to make water vapor and attapulgite contact and react, and the reaction time For 1h, stop adding...

Embodiment 2

[0042] A preparation method of attapulgite paper filler, comprising the steps of:

[0043](1) Pretreatment of attapulgite: Take attapulgite and crush it until the particle size is 28 mesh. Under the condition of stirring, add attapulgite into distilled water with a solid-to-liquid weight ratio of 1:20. After stirring at 180 r / min for 2.5 hours, centrifuge the obtained slurry with a centrifuge to remove detritus minerals, and obtain attapulgite fine soil through the steps of filtration and drying;

[0044] (2) Preparation of the primary finished product of attapulgite: add the attapulgite concentrate obtained in step (1) into deionized water in a certain proportion to obtain attapulgite suspension, filter and stand to dry to obtain attapulgite primary product;

[0045] (3) Water vapor modification treatment: raise the primary product of attapulgite prepared in step (2) from room temperature to 320°C, and inject inert gas to make water vapor and attapulgite contact and react, a...

Embodiment 3

[0058] A preparation method of attapulgite paper filler, comprising the steps of:

[0059] (1) Pretreatment of attapulgite: Take attapulgite and crush it until the particle size is 22 mesh. Under stirring, add attapulgite into distilled water with a solid-to-liquid weight ratio of 1:17. After stirring at 165 r / min for 2 hours, centrifuge the obtained slurry with a centrifuge to remove detritus minerals, and obtain attapulgite clay after filtering and drying;

[0060] (2) Preparation of the primary finished product of attapulgite: add the attapulgite concentrate obtained in step (1) into deionized water in a certain proportion to obtain attapulgite suspension, filter and stand to dry to obtain attapulgite primary product;

[0061] (3) Water vapor modification treatment: raise the primary product of attapulgite prepared in step (2) from room temperature to 310°C, and inject inert gas to make water vapor and attapulgite contact and react, and the reaction time For 1h, stop addi...

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PUM

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Abstract

The invention discloses a method for preparing an attapulgite paper filler and relates to the technical field of attapulgite. The method comprises the steps: (1) pretreating the attapulgite; (2) preparing an attapulgite primary finished product; (3) carrying out water vapor modifying treatment; (4) carrying out surface modification treatment; (5) preparing slurry; and (6) carrying out spray drying. According to the method, the attapulgite serves as a main raw material. The attapulgite is subjected to modifying treatment twice, and filler additives are added, so that the anti-moth performance, strength and toughness of paper can be improved, and the paper is resistant to writing; and furthermore, the attapulgite paper filler is simple to prepare and convenient to preserve.

Description

technical field [0001] The invention relates to the technical field of attapulgite, in particular to a preparation method of attapulgite paper filler. Background technique [0002] Attapulgite has good colloidal properties such as unique dispersion, high temperature resistance, salt and alkali resistance, and high adsorption and decolorization ability. It also has certain plasticity and cohesive force, strong water absorption, stickiness and plasticity when wet, small shrinkage after drying, no obvious cracks, soaking in water and disintegration, and suspension does not flocculate and precipitate when it encounters dielectrics. Therefore, attapulgite is widely used in many fields such as sewage treatment, adsorption purification, detergent, rubber, paint, papermaking, light industry, agriculture, cosmetics, etc. It is an important non-metallic mineral. In order to further improve the use effect of attapulgite and enhance its overall physical and chemical properties, it is u...

Claims

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Application Information

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IPC IPC(8): D21H17/69D21H17/68D21H17/30D21H17/23D21H17/60D21H17/66D21H17/17D21H17/53D21H17/51D21H17/25D21H17/13
CPCD21H17/69D21H17/13D21H17/17D21H17/23D21H17/25D21H17/30D21H17/51D21H17/53D21H17/60D21H17/66D21H17/68
Inventor 李振国
Owner MINGGUANG GUOXING ATTAPULGITE CLAY
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