Method for preparing fluorophlogopite compound titanium dioxide

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...

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.