Method for controlling particle diameter of decorative body paper titanium dioxide

Abstract

The invention discloses a method for controlling the particle diameter of decorative body paper titanium dioxide, and belongs to the technical field of decorative body paper titanium dioxide. Through the control of a hydrolysis working procedure, the method comprises the following steps: A: selecting titanium sulfate solution, preheating to 96-98 DEG C for standby use, and preheating desalted water to be boiling for standby use; B: firstly, adding the desalted water which is preheated to be boiling into a hydrolysis reactor to be stirred, then, adding the preheated titanium sulfate solution, stirring after the titanium sulfate solution finishes adding, and heating to raise temperature to slight boiling; C: after a hydrolysis rate of step B achieves 50-65%, stopping stirring and heating, and carrying out curing; D: after curing is carried out, stirring again, heating and raising temperature to slight boiling, and carrying out hydrolysis for 160-180min; E: adding the boiling desalted water, controlling total titanium concentration TiO2 in slurry to be 160-180g / L, keeping the slight boiling, and carrying out hydrolysis for 50-60min. According to the method disclosed by the invention, a titanium sulfate solution pyrohydrolysis technology is implemented by meeting body paper requirements, water and titanium dioxide particle diameter are even, and the method conforms to the hydrolysis technology specially designed for the particle diameter requirement of the decorative body paper titanium dioxide.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide for decorative base paper, and relates to the research on the particle size of titanium dioxide for decorative base paper, in particular to a method for controlling the particle size of titanium dioxide for decorative base paper. The method of the invention enables the titanium sulfate liquid thermal hydrolysis technology to meet the requirements of the decorative base paper, and the particle size of water and titanium dioxide is uniform, and the hydrolysis technology is specially designed for the particle size of the decorative base paper titanium dioxide. By starting with the hydrolysis technology, the particle size of titanium dioxide prepared by the sulfuric acid method can reach the advantage of the chloride method, and then the decorative base paper prepared can be compared with the chloride method titanium dioxide in terms of hiding power, whiteness and gloss. Background technique ...

AI Technical Summary

Problems solved by technology

China's titanium dioxide industry rose in the early 1990s and has developed rapidly in this century, but there are few technical researches. It mainly uses the technology of Eastern European countries before the 1970s. Some enterprises have learned some sporadic advances in the world's sulfuric acid process through exchanges. According to experience, the homogeneity of the industry is very serious, and the control of titanium dioxide particle size is not enough, resulting in the later application effect not as good as that of chloride titanium dioxide.