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Method for preparing fluorophlogopite compound titanium dioxide

A technology of composite titanium dioxide and fluorophlogopite powder, which is applied in the processing field of titanium dioxide, can solve the problems of whitening and yellowing, high price, and insufficient whiteness of titanium dioxide, and achieve high mechanical strength, low cost and improved product quality. Effect

Active Publication Date: 2011-06-15
JIANGYIN YOUJIA PEARLESCENT MICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the whiteness of titanium dioxide is not high enough, it is easy to change from white to yellow under the sunlight, and the price is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The present invention is a kind of preparation method of fluorine phlogopite composite titanium dioxide, and this processing method comprises following technological steps:

[0047] Step 1: Soak fluorphlogopite mica powder in water and stir to form a mixed solution, then raise the temperature of the mixed solution to 60°C-70°C;

[0048] Step 2: Add oxalic acid to the heated mixture, adjust the pH value to 2-3, and continue to heat the mixture to 75°C-80°C;

[0049]Step 3: Add the non-ionic surfactant to the mixture and keep stirring;

[0050] The fourth step: then titanium tetrachloride (TiCl 4 ) into the mixed solution and stirred, observe the hue of the mixed solution, when the color of the mixed solution turns blue, stop TiCl 4 , and then keep the mixture at 70°C to 80°C for a period of time, so that the metal titanium is coated on the surface of fluorphlogopite;

[0051] Step 5: After filtering the mixed solution, the primary raw material of fluorphlogopite compo...

Embodiment 2

[0055] On the basis of Example 1, a preferred embodiment of the present invention is that the volume ratio of fluorphlogopite mica powder to water in the mixed liquid in the first step is 1:10. For example, 50g of fluorphlogopite powder can be added to 500ml of water.

Embodiment 3

[0057] On the basis of Example 2, the preferred technical solution of the present invention also includes that the volume ratio of oxalic acid added to the mixed solution in the second step is 0.5%-1.0%. Since oxalic acid belongs to organic acids, its performance is softer, and it is more suitable for promoting the adhesion of titanium metal to the surface of fluorphlogopite.

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Abstract

The invention discloses a method for preparing fluorophlogopite compound titanium dioxide. The method comprises the steps of: soaking fluorophlogopite powder in water to obtain mixed solution, adding oxalic acid to adjust the pH value to be between 2 and 3, and then adding a nonionic surfactant; then adding titanium tetrachloride and stirring, and stopping adding and preserving heat for a period of time when the hue of the mixed solution turns blue, wherein titanium metal can be cladded on the surface of fluorophlogopite through the process; and then performing filtration treatment to obtain primary raw materials of the fluorophlogopite compound titanium dioxide, and then performing drying and calcination treatment to finally obtain a finished product of the fluorophlogopite compound titanium dioxide. The fluorophlogopite compound titanium dioxide prepared by the method can be used for coatings, and the coatings have high whiteness (can reach over 99.8), bright and clean surfaces as well as good high temperature resistance and weather resistance, and can never change color and fade. The fluorophlogopite compound titanium dioxide also has the characteristics of good electrical insulating property, antistatic performance, acid and alkali corrosion resistance, strong coloring power and the like, and is simple in processing technology and low in cost.

Description

technical field [0001] The invention relates to a processing method of titanium dioxide, in particular to a method for producing titanium dioxide with fluorphlogopite as a base material. Background technique [0002] Titanium dioxide is considered to be a white pigment with the best performance in the world, and is widely used in coatings, plastics, papermaking, printing inks, chemical fibers, rubber, ceramics, daily chemicals, medicine, cosmetics, food and other industries. [0003] 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 and has no industrial application value. The anatase type (Anatase) is referred to as type A, and the rutile type (Rutile) is referred to as type R. Both have stable crystal lattices and are important white pigments and porcelai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/06C01G23/047
Inventor 戴加龙
Owner JIANGYIN YOUJIA PEARLESCENT MICA
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