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Salt treatment method for rutile titanium dioxide and treated titanium dioxide initial product

A rutile-type titanium dioxide, salt treatment technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of titanium dioxide decolorization power, resistivity is not greatly improved, to improve decolorization power, improve quality effect

Inactive Publication Date: 2017-05-24
PANZHIHUA TAIDU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this salt treatment agent can improve the whiteness, it does not greatly improve the decolorization power and resistivity of titanium dioxide.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Adopt the following method to prepare the titanium dioxide primary product:

[0047] a, pulping: add water and stir metatitanic acid (titanium dioxide content is 45% in this metatitanic acid), make metatitanic acid slurry;

[0048] b. Add treatment agent: add potassium carbonate, sodium phosphate, stannous sulfate, strontium chloride, aluminum chloride, and calcined seeds to the metatitanic acid slurry;

[0049] c. Filtration and calcination: filter the slurry after adding the treatment agent in step b, take the filter cake, and calcine to obtain the primary product of titanium dioxide;

[0050] Wherein, the addition of potassium carbonate is based on potassium oxide, and the quality of potassium oxide is 0.64% of the mass of titanium dioxide; the addition of sodium phosphate is based on phosphorus pentoxide, and the quality of phosphorus pentoxide is 0.28% of the quality of titanium dioxide; The amount of tin added is based on tin oxide, and the quality of tin oxide i...

Embodiment 2

[0053] Adopt the following method to prepare the titanium dioxide primary product:

[0054] a, pulping: add water and stir metatitanic acid (titanium dioxide content is 45% in this metatitanic acid), make metatitanic acid slurry;

[0055] b. Add treatment agent: add potassium hydroxide, sodium hydrogen phosphate, tin nitrate, strontium nitrate, aluminum sulfate and calcined seeds to the metatitanic acid slurry;

[0056] c. Filtration and calcination: filter the slurry after adding the treatment agent in step b, take the filter cake, and calcine to obtain the primary product of titanium dioxide;

[0057] Wherein, the addition of potassium hydroxide is calculated in terms of potassium oxide, and the quality of potassium oxide is 1.35% of the mass of titanium dioxide; the addition of sodium hydrogen phosphate is calculated in terms of phosphorus pentoxide, and the quality of phosphorus pentoxide is 0.38% of the quality of titanium dioxide; The addition amount of tin nitrate is c...

Embodiment 3

[0060] Adopt the following method to prepare the titanium dioxide primary product:

[0061] a, pulping: add water and stir metatitanic acid (titanium dioxide content is 45% in this metatitanic acid), make metatitanic acid slurry;

[0062] b. Add treatment agent: add potassium bicarbonate, sodium hexametaphosphate, stannous sulfate, strontium chloride, aluminum nitrate and calcined seeds to the metatitanic acid slurry;

[0063] c. Filtration and calcination: filter the slurry after adding the treatment agent in step b, take the filter cake, and calcine to obtain the primary product of titanium dioxide;

[0064] Wherein, the addition of potassium bicarbonate is based on potassium oxide, and the quality of potassium oxide is 0.76% of the mass of titanium dioxide; the addition of sodium hexametaphosphate is based on phosphorus pentoxide, and the quality of phosphorus pentoxide is 0.33% of the quality of titanium dioxide %; the amount of stannous sulfate is calculated as tin oxide...

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PUM

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Abstract

The invention relates to a salt treatment method for rutile titanium dioxide and a treated titanium dioxide initial product, and belongs to the technical field of titanium dioxide production. The technical problem solved by the invention comprises that provided is the titanium dioxide initial product after salt treatment of rutile titanium dioxide. The titanium dioxide initial product is composed of the following components in parts by weight: 100 parts of titanium dioxide, 0.64-1.35 parts of potassium oxide, 0.28-0.38 part of phosphorus pentoxide, 0.13-0.24 part of tin oxide, 0.16-0.29 part of strontium oxide, 0.41-0.83 part of aluminum oxide, and 3-4 parts of a calcining crystal seed. Through the specific treatment agents and amount, the titanium dioxide initial product is obtained, the lightening power of titanium dioxide can be improved, and thus the quality of titanium dioxide is improved.

Description

technical field [0001] The invention relates to a salt treatment method of rutile titanium dioxide and a treated titanium dioxide primary product, belonging to the technical field of titanium dioxide production. Background technique [0002] Titanium dioxide (titanium dioxide) is chemically stable and does not react with most substances under normal circumstances. There are three crystallizations of titanium dioxide in nature: brookite, anatase and rutile. The plate titanium type is an unstable crystal type, which has no industrial application value. Both the anatase type and the rutile type have stable crystal lattices and are important white pigments and porcelain glazes. Compared with other white pigments It has superior whiteness, tinting strength, hiding power, weather resistance, heat resistance, and chemical stability, especially non-toxic. Therefore, titanium dioxide is widely used in coatings, plastics, rubber, ink, paper, chemical fiber, ceramics, daily chemicals...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053C01G23/08
CPCC01G23/053C01G23/08
Inventor 周彤李关祥周军米加海
Owner PANZHIHUA TAIDU CHEM
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