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A kind of preparation method of tio2/powder quartz composite powder material

A composite powder, quartz powder technology, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment and other directions, can solve the problem of low added value of powder quartz products in the market, and achieve high acid and alkali corrosion resistance, high resistance to abrasive effect

Inactive Publication Date: 2011-11-30
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purification technology of powdered quartz limits its application in the fields of electronics and information materials, and the market added value of powdered quartz products has always been low

Method used

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  • A kind of preparation method of tio2/powder quartz composite powder material
  • A kind of preparation method of tio2/powder quartz composite powder material
  • A kind of preparation method of tio2/powder quartz composite powder material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 1. Put 200g of 200-mesh quartz powder (whiteness 85), 133g of water, and 0.20g of sodium polyacrylate into the ultrafine grinding system of the wet stirring mill, and stir and grind until d 50 = 1.88 μm;

[0030] 2. The crystallized TiO 2 (Anatase type titanium dioxide) 200g, water 250g are placed in the high-speed stirring tank and stirred, then add the solution containing 1.00g sodium polyacrylate, and then stir for 40min to make a slurry;

[0031] 3. Grind the powdered quartz into a fine slurry, TiO 2 The slurry is mixed and ground in a wet agitator mill until the product particle size reaches d 90 = 1.90 μm;

[0032] 4. After adding 100g of water to dilute the slurry, use a centrifuge to centrifuge the slurry to form a filter cake; add 300g of water to the filter cake, disperse evenly again, and then centrifuge to obtain a filter cake, and discard the waste liquid;

[0033] 5. Dry the filter cake in a drying oven at a temperature of 105°C until the water content...

Embodiment 2

[0039] 1. Put 200g of powdered quartz powder, 200g of water, and 2.0g of sodium polyacrylate in the ultrafine grinding system of the wet stirring mill, and stir and grind until d 50 = 1.92 μm;

[0040] 2. The crystallized TiO 2 (rutile titanium dioxide) 108g, 90g of water are placed in the high-speed stirring tank and stirred, then add a solution containing 0.33g of sodium polyacrylate, and then stir for 40min to make a slurry;

[0041] 3. Grind the powdered quartz into a fine slurry, TiO 2 The slurry is mixed and ground in a wet agitator mill until the product particle size reaches d 90 = 1.93 μm;

[0042] 4. After adding 250g of water to dilute the slurry, use a vacuum filter to filter the slurry to form a filter cake; add 400g of water to the filter cake, disperse evenly again, and centrifuge to obtain a filter cake, and discard the waste liquid;

[0043] 5. Dry the filter cake in a drying oven at a temperature of 105°C until the water content is below 1%;

[0044] 6. ...

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Abstract

The invention provides a method for preparing a TiO2 / powdered quartz composite powder material. In the invention, the used powdered quartz is a nucleated substrate, crystalline TiO2 is a coating material, the surface of the nucleated substrate is coated and modified with TiO2 by reaction in a mechanical and chemical modifying mode in a wet-process superfine grinding system, and thus, the TiO2 / powdered quartz composite powder material is prepared. In the composite powder material disclosed by the invention, the TiO2 is uniformly coated on the surface of the powdered quartz particles and is stably bonded with the surface of the powdered quartz particles. The powder material has high covering performance, dye performance such as high compatibility with an application system and high acid and alkali resistance. The TiO2 / powdered quartz composite powder material can be used in place of natural titanium white.

Description

Technical field [0001] The present invention relates to a kind of TiO 2 The invention discloses a method for preparing a powder quartz composite powder material, which belongs to the field of non-metallic mineral processing and the field of environment-friendly materials. Background technique [0002] Titanium dioxide (pigment grade titanium dioxide), as the best inorganic white pigment ever produced, is widely used in many fields. In recent years, with the rapid development of my country's construction and coating industries and various materials, the demand for various types of titanium dioxide is increasing day by day, but the serious environmental pollution problems such as waste water, waste gas, and waste residues in the production process of titanium dioxide have been difficult to solve. And the consumption of titanium products such as titanium dioxide has led to an increasing shortage of titanium resources. All these factors have led to an increase in the production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/06C09C3/04C09C1/36
Inventor 廖立兵杜高翔何浩陈宝海杨伟刚
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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