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Method for processing large particles produced during continuous acidolysis of titanium-containing raw materials

A titanium raw material and large particle technology, which is applied in the field of processing large particles produced by continuous acidolysis of titanium-containing raw materials, can solve problems such as incomplete acidolysis, wear of the feeding port and dissolution equipment, and material accumulation in the dissolution tank, so as to avoid equipment Abrasion, avoiding material accumulation and reactors, etc., high acid hydrolysis efficiency

Inactive Publication Date: 2015-09-23
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

[0003] The present invention overcomes the deficiencies of the prior art, and provides a method for treating large particles produced by continuous acidolysis of titanium-containing raw materials, in order to solve the problem of dissolution tank volume caused by incomplete acidolysis of large particles during continuous acidolysis of titanium-containing raw materials. Material or discharge port and dissolution equipment wear and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The vibrating screen with an inclination angle of 10° is installed at the feeding port of the continuous acidolysis reactor, the aperture of the vibrating screen is 15mm, and the feeding port of the vibrating screen is above the belt of the belt conveyor.

[0018] Feed continuously to the vibrating screen, the vibrating sieve will acidolyze the small particles of titanium concentrate and sieve the material, and the small particle titanium concentrate acidolysis material will enter the continuous acidolysis reactor for acidolysis reaction, and the titanium with a particle size greater than 15mm The concentrate acid hydrolysis material particles are trapped on the vibrating screen, and then these large particles are transferred to the belt of the belt conveyor, transported to the roller mill, and then returned to the continuous acid hydrolysis reactor for acid hydrolysis reaction after being ground.

[0019] In this continuous feeding production stage, the average retentio...

Embodiment 2

[0021] The vibrating screen with an inclination angle of 15° is installed at the feeding port of the continuous acidolysis reactor, the aperture of the vibrating screen is 20mm, and the feeding port of the vibrating screen is above the belt of the belt conveyor.

[0022] Feed continuously to the vibrating sieve, the vibrating sieve sieves the small particles of acid-soluble titanium slag, and the small particles of acid-soluble titanium slag enter the continuous acidolysis reactor for acidolysis reaction, and the acid-soluble titanium slag particles with a particle size greater than 20mm are acidified The decomposed material is trapped on the vibrating screen, and then these large particles are transferred to the belt of the belt conveyor, transported to the roller mill, ground and then returned to the continuous acid hydrolysis reactor for acid hydrolysis reaction.

[0023] In this continuous feeding production stage, the average retention rate of acid-soluble titanium slag pe...

Embodiment 3

[0025] The vibrating screen with an inclination angle of 5° is installed at the feeding port of the continuous acidolysis reactor, the aperture of the vibrating screen is 10mm, and the feeding port of the vibrating screen is above the belt of the belt conveyor.

[0026] Feed continuously to the vibrating screen, the vibrating screen sieves the small particles of titanium concentrate raw materials, and the small particles of titanium concentrate raw materials enter the continuous acidolysis reactor for acidolysis reaction, and intercept the titanium concentrate raw material particles with a particle size greater than 10mm On the vibrating screen, these large particles are then transferred to the belt of the belt conveyor, transported to the roller mill, ground and then returned to the continuous acid hydrolysis reactor for acid hydrolysis reaction.

[0027] In this continuous feeding production stage, the average interception rate of titanium concentrate acid hydrolysis material...

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Abstract

The invention discloses a method for processing large particles produced during continuous acidolysis of titanium-containing raw materials. An inclined vibrating screen is installed at a discharge port of a titanium-containing raw material continuous acidolysis reactor, acid-hydrolyzed titanium-containing raw materials below the screen directly enter the continuous acidolysis reactor to be subjected to acidolysis reaction after the titanium-containing raw materials are subjected to acidolysis and screened by the vibrating screen, and acid-hydrolyzed titanium-containing raw materials on the screen are conveyed to a grinding device through a belt conveyor to be fine ground and then return into the continuous acidolysis reactor to be subjected to acidolysis reaction. By means of the method, the large particles in the titanium-containing raw material acidolysis materials can be quite conveniently screened out and then subjected to acidolysis reaction after being fine ground through the grinding device such as a rolling mill, and therefore the acidolysis rate and acidolysis efficiency of the titanium-containing raw materials are high, and the problem that materials are accumulated in a dissolving tank and devices such as a reactor are abraded is solved.

Description

technical field [0001] Embodiments of the present invention relate to the field of titanium dioxide preparation, and more specifically, embodiments of the present invention relate to a method for treating large particles produced by continuous acidolysis of titanium-containing raw materials. Background technique [0002] Titanium dioxide is a white pigment whose main component is titanium dioxide. There are two manufacturing methods of titanium dioxide, sulfuric acid method and chlorination method. At present, sulfuric acid method is mainly used to manufacture titanium dioxide in China. The mainstream process of preparing titanium dioxide by the sulfuric acid method is to perform acidolysis reaction of titanium concentrate and concentrated sulfuric acid to produce titanyl sulfate, which is hydrolyzed to generate metatitanic acid, and then calcined, crushed and post-treated to obtain titanium dioxide. The production of titanium dioxide by the sulfuric acid method has the adv...

Claims

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Application Information

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IPC IPC(8): C01G23/053
Inventor 杜剑桥马维平路瑞芳任亚平伍良英
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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