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Preparation method of barite/TiO2 composite material

A composite material, barite technology, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment and other directions, can solve the problems of polluted environment, large acid waste water, difficult to treat, etc., achieves simple preparation process and wide application fields , the effect of reducing costs

Inactive Publication Date: 2021-04-02
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical precipitation method is traditional and widely used, but there are some problems: the induction of the mineral nucleation matrix makes it difficult for the hydrated titanium dioxide precipitate to generate rutile titanium dioxide through subsequent crystallization; a large amount of acidic wastewater is generated during this process, which pollutes the environment
The hydrophobic agglomeration method is relatively mild, but it also produces a large amount of waste water, which is difficult to treat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put 100 kg of barite powder (500 mesh) and 100 kg of deionized water in the ultra-fine grinding system of the wet stirring mill, stir for 15 min through a mixer with high-speed stirring function, and then add 1 kg of sodium tripolyphosphate solution (solution concentration 20%, add 5 kg of the solution), and then stir for 40 min to make ultrafine grinding slurry;

[0036] Start the ultra-fine grinding system of the wet stirring mill, and grind the slurry made of barite powder and water according to the continuous grinding method so that the particle size of the ground product is less than 2 um and the content is 85%-95%;

[0037] Filter the ground barite slurry to form a filter cake and heat and dry it so that its moisture content is less than 1%. Send the dried barite powder into the disintegrator for processing;

[0038] The composition ratio by weight is: barite 50%-80%, crystalline TiO2 20%-50%, weigh the ground and dried barite powder and rutile powder and place t...

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PUM

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Abstract

The invention discloses a preparation method of a barite / TiO2 composite material, and relates to a preparation method of a composite material with pigment properties. Barite powder is used as a core coating matrix, crystallized TiO2 is used as a coating material, and the barite / TiO2 composite material with pigment titanium dioxide properties is prepared by continuously conducting stirring and grinding in a dry stirring system. The obtained barite / TiO2 composite material shows strong covering power, good compatibility with an application system and other pigment properties due to the combination of surface TiO2 properties and TiO2 and barite properties. The barite / TiO2 composite material is simple in preparation process and wide in application field, and the cost can be greatly reduced.

Description

technical field [0001] The invention relates to a method for preparing a composite material with pigment properties, in particular to a method for preparing a barite / TiO2 composite material. Background technique [0002] Titanium dioxide (pigment titanium dioxide) is widely used in many industrial fields such as coatings and papermaking due to its excellent opacity, highest color reduction and hiding power, and its high-quality whiteness and brightness. Especially in recent years, people's demand for white pigment titanium dioxide is increasing day by day. However, titanium resources are increasingly in short supply, and large environmental pollution is generated in the production process, which is inconsistent with the current environmental protection concept. The above-mentioned problems have continuously increased the burden on titanium dioxide consumer industries such as coatings, and thus restricted the development of the industry. The pigment performance of titanium ...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/04C09C3/06
CPCC01P2004/51C01P2006/19C01P2006/60C01P2006/90C09C1/027C09C3/006C09C3/041C09C3/063
Inventor 吴思媛梁玉姚宇奇
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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