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Titanium dioxide production method

A production method and technology of titanium dioxide, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of high energy consumption, many steps, long time, etc., to improve production efficiency, reduce energy consumption, and have strong feasibility. Effect

Inactive Publication Date: 2015-09-23
徐迪青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This titanium dioxide production method has many steps, long time and high energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] The method sequentially includes the following steps:

[0014] 1) Pulping metatitanic acid with a slurry concentration of 400g / L;

[0015] 2) Add soluble silicate to the metatitanic acid slurry and stir evenly, the added amount is calculated as silica, and the weight of silica is 10% of the titanium dioxide content;

[0016] 3) Add sodium metaaluminate or soluble aluminum salt to the metatitanic acid slurry and stir evenly. The added amount is based on alumina, and the weight of alumina is 10% of the titanium dioxide content;

[0017] 4) Use ammonia water to adjust the slurry pH to 11;

[0018] 5) Filter and wash with water;

[0019] 6) Add soluble potassium-containing compound and zinc-containing compound to the filter cake and mix evenly, add soluble potassium-containing compound and zinc-containing compound and mix evenly. The added amount of soluble potassium-containing compound accounts for 0.29-0.35wt% of the titanium dioxide content, zinc-containing compound The added amou...

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PUM

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Abstract

The present invention relates to a titanium dioxide production method comprising the steps of hydrolyzing, washing, salt treatment, calcinations and milling of a titanium solution, wherein the salt treatment step is as follows: a soluble potassium compound and a zinc-containing compound are added in the salt treatment step and mixed uniformly, the addition amount of the soluble potassium compound accounts for 0.29-0.35wt% of the titanium dioxide content, the addition amount of the zinc-containing compound accounts for 0.31-0.44wt% of the titanium dioxide content, the zinc-containing compound is zinc chloride, and the soluble potassium compound is potassium hydroxide. The production method of the method is simple and practical, and the field process does not require the transformation scene, and is highly feasible.

Description

Technical field [0001] The invention relates to a production method of titanium dioxide. Background technique [0002] Titanium dioxide (also known as titanium dioxide) has stable physical and chemical properties, excellent optical and electrical properties, and excellent pigment performance, so it is widely used in coatings, plastics, papermaking, printing inks, chemical fibers, rubber, cosmetics and other industries. The traditional production method of titanium dioxide is to calcinate metatitanic acid to obtain titanium dioxide for wet grinding, slurrying and dispersion, then sanding, and then coating the sanded titanium dioxide. After coating, it needs to be It is calcined and crushed to obtain the coated titanium dioxide. For example, Chinese Patent 2011100995001 discloses a method for preparing titanium dioxide for marine coatings. The titanium dioxide production method has many steps, long time and high energy consumption. The production methods of titanium dioxide main...

Claims

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Application Information

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IPC IPC(8): C01G23/053
Inventor 徐迪青
Owner 徐迪青