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A purification method for raw materials for production of decorative base paper titanium dioxide

A technology for decorating base paper and titanium dioxide, applied in chemical instruments and methods, titanium compounds, inorganic chemistry, etc., can solve problems such as the separation of ferrous sulfate, achieve the effects of increasing yield, uniform and pure crystallization, and saving cooling crystallization time

Active Publication Date: 2019-11-12
HEBEI MILSON TITANIUM DIOXIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem of ferrous sulfate separation, and the existing problems of the above-mentioned existing ferrous sulfate separation, the present invention realizes the purification of titanium sulfate liquid by starting from two aspects of crystal structure and process control, Improve the efficiency of ferrous sulfate crystallization in titanium sulfate solution

Method used

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  • A purification method for raw materials for production of decorative base paper titanium dioxide
  • A purification method for raw materials for production of decorative base paper titanium dioxide

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Effect test

Embodiment 1

[0030] A method for purifying the raw materials for the production of decorative base paper titanium dioxide, which is processed in a crystallizer with a stirrer, and the volume of the crystallizer used is 56m 3 , The cylinder body is increased by 500mm on the purchased crystallization tank. This design increases the separation space between the secondary steam and the titanium sulfate solution, reduces the amount of secondary steam entrainment, and reduces the loss of the titanium sulfate solution; agitator and level The angle of the direction is 15°. This design increases the radial flow of the materials in the tank, the mixing of materials is more uniform, the crystallization efficiency is improved, the ferrous sulfate crystals are more uniform, and the wall adhesion of the ferrous sulfate crystals is reduced, including the following steps:

[0031] A. Add 25m to the crystallization tank 3 Titanium sulfate solution (concentration TiO 2 121g / L), turn on the stirrer, and control t...

Embodiment 2

[0037] A method for purifying the raw materials for the production of decorative base paper titanium dioxide, which is processed in a crystallizer with a stirrer, and the volume of the crystallizer used is 56m 3 , The cylinder body is increased by 500mm on the purchased crystallization tank. This design increases the separation space between the secondary steam and the titanium sulfate solution, reduces the amount of secondary steam entrainment, and reduces the loss of the titanium sulfate solution; agitator and level The angle of the direction is 15°. This design increases the radial flow of the materials in the tank, the mixing of materials is more uniform, the crystallization efficiency is improved, the ferrous sulfate crystals are more uniform, and the wall adhesion of the ferrous sulfate crystals is reduced, including the following steps:

[0038] A. Add 26m to the crystallization tank 3 Titanium sulfate solution (concentration TiO 2 121g / L), turn on the stirrer, and control t...

Embodiment 3

[0044] A method for purifying the raw materials for the production of decorative base paper titanium dioxide, which is processed in a crystallizer with a stirrer, and the volume of the crystallizer used is 56m 3 , The cylinder body is increased by 500mm on the purchased crystallization tank. This design increases the separation space between the secondary steam and the titanium sulfate solution, reduces the amount of secondary steam entrainment, and reduces the loss of the titanium sulfate solution; agitator and level The angle of the direction is 20°. This design increases the radial flow of the materials in the tank, the mixing of materials is more uniform, the crystallization efficiency is improved, the ferrous sulfate crystals are more uniform, and the adhesion of the ferrous sulfate crystals to the wall is reduced, including the following steps:

[0045] A. Add 25m to the crystallization tank 3 Titanium sulfate solution (concentration TiO 2 121g / L), turn on the stirrer and con...

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Abstract

The invention discloses a purification method of a decorative base paper titanium dioxide production material, and belongs to the technical field of sulfuric acid method titanium dioxide production. The method is performed in a crystallizing tank with a stirrer, and comprises the following steps: A, feeding titanium sulfate solution into the crystallizing tank, and starting the stirrer; B, controlling pressure in the crystallizing tank to cool down a material; C, leading auxiliary steam into the crystallizing tank, meanwhile leading auxiliary circulation water into the crystallizing tank, andcontrolling tank feeding temperature and tank discharging temperature of the auxiliary circulation water, pressure in the tank and material temperature in the tank; D, leading main steam into the crystallizing tank, meanwhile leading main circulation water into the crystallizing tank, and controlling tank feeding temperature and tank discharging temperature of the main circulation water, pressurein the tank and material temperature in the tank; E, stopping the leading of auxiliary steam, main steam, auxiliary circulation water and main circulation water, emptying till pressure in the tank isequal to environment pressure, and filtering. The method realizes purification of the titanium sulfate solution, and improves the crystallization efficiency of ferrous sulfate in the titanium sulfatesolution.

Description

Technical field [0001] The invention belongs to the technical field of titanium dioxide production by sulfuric acid method, and relates to a method for purifying raw materials for the production of decorative base paper titanium dioxide, in particular a method for separating ferrous sulfate. The purification method of the invention can greatly improve the efficiency of ferrous sulfate crystallization in the titanium sulfate solution, realize the separation of the ferrous sulfate, and at the same time ensure the ratio of iron to titanium in the titanium sulfate solution. Background technique [0002] The raw material for the production of titanium dioxide in the sulfuric acid method, the titanium sulfate solution is produced by decomposing titanium ore with concentrated sulfuric acid. Fe 2+ The content is higher, which affects the particle size and particle size distribution, filtration performance and washing effect of hydrolyzed metatitanic acid. Titanium sulfate solution needs t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00C01G49/14
CPCC01G23/008C01G49/14C01P2006/80
Inventor 张建平张川张千张潇
Owner HEBEI MILSON TITANIUM DIOXIDE
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