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Method for efficiently purifying titanous sulfate liquid

A titanium sulfate, high-efficiency technology, applied in the field of separation and purification, can solve the problems of difficult to control the quality of titanium liquid, large volume of plate and frame filtration equipment, reducing the concentration of titanium liquid, etc., to achieve the effect of easy control, small volume, and improved environmental conditions

Inactive Publication Date: 2018-02-16
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the titanium liquid is filtered, the filter cloth should be cleaned or even replaced from time to time. The work is heavy, and the flushing water will reduce the concentration of the titanium liquid; if the filter cloth is damaged, the impurities in the titanium liquid will enter the subsequent process with the titanium liquid. Liquid quality is difficult to control stably
The plate and frame filter equipment is bulky, and the acid gas released during the process is difficult to control

Method used

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  • Method for efficiently purifying titanous sulfate liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 180ml of the concentrated titanium sulfate solution (the solid content of the residue is 28mg / L, the mass content of titanium dioxide is about 195g / L) into the high-speed centrifuge, and centrifuge for 10 minutes at a speed of 9000 rpm. After centrifugation, the solid residue It is deposited at the bottom of the centrifugal equipment to realize the separation of solid residue and titanium liquid. After centrifugal separation, deeply purified titanium sulfate liquid is obtained. The solid content of titanium liquid residue is reduced to 14mg / L, and the mass content of titanium dioxide remains unchanged (about 195g / L ).

Embodiment 2

[0030] The supernatant 180ml (residue solid content is 601mg / L, titania weight content about 120g / L) of the titanium sulfate solution after sedimentation is input high-speed centrifuge, under the condition of 9000 rev / mins, centrifugal 10 minutes, After centrifugation, the solid residue is deposited on the bottom of the centrifuge equipment to realize the separation of the solid residue and the titanium liquid. After centrifugation, a deeply purified titanium sulfate liquid is obtained. The solid content of the residue is reduced to 10mg / L, and the mass content of titanium dioxide remains unchanged (about 120g / L).

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Abstract

The invention discloses a method for efficiently purifying a titanous sulfate liquid and belongs to the field of separation and purification. The technical problem to be solved by the invention is toprovide the method for efficiently purifying the titanous sulfate liquid with convenience in operation and high purifying efficiency. The method for efficiently purifying the titanous sulfate liquid comprises the step of adopting a high-speed centrifugation technique for separating the titanous sulfate liquid, thereby acquiring a deeply purified titanous sulfate liquid. The purifying process of the titanous sulfate liquid according to the method disclosed by the invention is simple and easy to be controlled, the operation is simple and convenient, the continuous running can be realized, the draining acid gas can be effectively controlled, the environmental condition of the titanium liquid purification process is improved, the green production is easily realized and the efficiency of the titanium liquid purification process is increased.

Description

technical field [0001] The invention belongs to the field of separation and purification, and in particular relates to a method for efficiently purifying titanium sulfate liquid. Background technique [0002] The sulfuric acid method is one of the most important methods for titanium dioxide production in the world today. The production process of titanium dioxide by sulfuric acid method begins with the acid hydrolysis process: under the action of concentrated sulfuric acid, titanium concentrate or titanium slag reacts with sulfuric acid to form soluble titanyl sulfate and other titanium sulfates. The acid hydrolysis process also produces insoluble suspended residues composed of undecomposed ilmenite, rutile, mud and other compounds, as well as colloidal suspended matter. These residues and colloids must be removed from the titanium sulfate solution. The quality of the purification directly affects the process control and product performance, such as the washing of titanium ...

Claims

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Application Information

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IPC IPC(8): C01G23/00
CPCC01G23/008
Inventor 吴小平刘勇
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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