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Method for preparing high-concentration titanic liquid

A high-concentration, titanium liquid technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of high energy consumption, the inability of the medium to be recycled economically, and the complex preparation process of titanium liquid. Product pigment properties, the effect of improving productivity and product quality

Active Publication Date: 2012-10-31
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a kind of amorphous solid intermediate product ( Titanium-containing compound) as raw material, using low-concentration sulfuric acid, the method for preparing high-concentration clarified titanium liquid in the next step of low-temperature acidolysis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Use the methods in ZL 200610114130.3 and ZL 200610114131.8 to prepare solid intermediate products (titanium-containing compounds); mix high-titanium slag with a mass content of titanium dioxide greater than 85% and sodium hydroxide, and react at 350°C to 550°C for 0.2 to 5 hours , wherein the mass ratio of sodium hydroxide to high-titanium slag is 0.8:1 to 3:1, and the obtained solid intermediate product and water are washed with water at a solid-to-liquid mass ratio of 1:3 to 1:100 to obtain a washed solid intermediate products; or

[0021] Mix high-titanium slag with a mass content of titanium dioxide greater than 85% and potassium hydroxide evenly, and react at 380°C to 500°C for 0.2-3 hours, wherein the mass ratio of potassium hydroxide to high-titanium slag is 0.5:1-2: 1. The obtained solid intermediate product is washed with water at a solid-to-liquid mass ratio of 1:3 to 1:100 to obtain a washed solid intermediate product.

[0022] The crystal form prepared by t...

Embodiment 2

[0024] Preparation of solid intermediate product (titanium-containing compound) with reference to Example 1; The crystalline form that gets 200g preparation is the solid intermediate product of amorphous form (wet basis titanium content is 40%, with TiO 2 ) mixed with 100mL of sulfuric acid solution with a mass concentration of 70%, the solid-to-liquid mass ratio of the solid intermediate product to dilute sulfuric acid was 1.2:1, insulated and stirred at a temperature of 30°C for 4 hours, left to stand for 12 hours, and taken out containing traces of suspended solids 200mL of crude titanium solution was obtained; 6mL of AMPAM flocculant with a mass concentration of 1% was added to the obtained crude titanium solution, and the temperature was 65°C and kept stirring for 6 hours. After flocculation, sedimentation and filtration, the obtained solution was analyzed. The main components of the clarified titanium solution are sulfuric acid, titanium sulfate and titanyl sulfate; the e...

Embodiment 3

[0026] Prepare solid intermediate product (titanium-containing compound) with reference to Example 1; The crystal form that gets 160g preparation is the solid intermediate product of amorphous form (wet basis titanium content is 25%, with TiO 2 ) mixed with 100mL of sulfuric acid solution with a mass concentration of 50%, the solid-to-liquid mass ratio of the solid intermediate product to dilute sulfuric acid was 1.1:1, kept stirring at a temperature of 60°C for 72 hours, allowed to stand for 1 hour, and took out the 150mL of crude titanium solution was obtained; 15mL of AMPAM flocculant with a mass concentration of 0.5% was added to the obtained crude titanium solution, and the temperature was 70°C for 3 hours with insulated stirring. After flocculation, sedimentation and filtration, the obtained solution was analyzed. The main components of the clarified titanium solution are sulfuric acid, titanium sulfate and titanyl sulfate; the effective acid concentration of the clarifie...

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Abstract

The invention belongs to the field of treating inorganic compounds, and particularly relates to a method for preparing high-concentration titanic liquid from a solid intermediate product in titanium dioxide clean preparation technology by an alkaline molten salt method at one step. The amorphous solid intermediate product in the titanium dioxide clean preparation process by the alkaline molten salt method is used as a raw material, low-concentration sulfuric acid is adopted, and the high-concentration clear titanic liquid (with the concentration ranging from 220g / L to 300g / L measured by TiO2) is prepared under the condition of low-temperature acid hydrolysis at one step. Compared with the traditional titanium dioxide preparation technology by a sulfuric acid method, the method has the advantages that steps such as vacuum concentration can be omitted, and the concentration of the prepared titanic liquid is higher than that of titanium liquid prepared after a vacuum concentration step in the traditional sulfuric acid method; and titanium dioxide preparation processes are simplified, equipment investment is reduced, energy consumption is lowered, and productivity and product quality are improved.

Description

technical field [0001] The invention belongs to the field of inorganic compound processing, and in particular relates to a method for preparing high-concentration titanium liquid in one step from a solid intermediate product (titanium-containing compound) in the clean production technology of titanium dioxide by an alkali molten salt method. Background technique [0002] Titanium dioxide, commonly known as titanium dioxide, is an important raw material in the chemical industry. It is non-toxic and harmless to health. It is the most important white pigment, accounting for 80% of all white pigments used, and consumes 90% of the world's titanium resources. The third largest inorganic chemical product. Industrial production methods include the sulfuric acid method and the chlorination method. 95% of the production enterprises in my country use the sulfuric acid method, which has a long process flow, heavy pollution, and the reaction medium cannot be economically recycled. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053
Inventor 薛天艳王伟菁杨轩王丽娜初景龙齐涛
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI