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The preparation method of trivalent titanium solution

A technology of trivalent titanium and solution, applied in chemical instruments and methods, titanium compounds, titanium and titanyl sulfate, etc., can solve the problems of pollution, occupation of titanium gypsum, etc., to reduce production costs, reduce titanium gypsum, The effect of reducing the amount of lime

Active Publication Date: 2019-12-13
广西顺风钛业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to solve the land occupation and pollution problems of titanium gypsum, the invention provides a preparation method of trivalent titanium solution

Method used

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  • The preparation method of trivalent titanium solution

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare trivalent titanium solution A as follows:

[0034] (1) Take a wash metatitanic acid slurry (TiO 2 =300g / l) and 98 acids are injected into the pressure vessel and mixed uniformly to obtain a mixture, and the liquid phase of the mixture is a sulfuric acid solution; the one-washed metatitanic acid slurry (by TiO 2 meter) and 98 acid (according to H 2 SO 4 The ratio of mass) is 1:1.8;

[0035] (2) record sulfuric acid solution mass concentration and be 9.9%;

[0036] (3) Then close the pressure vessel, and pressurize to control the internal pressure of the pressure vessel at 0.35Mpa;

[0037] (4) Heating the internal reaction system of the pressure vessel to boiling, and maintaining boiling for 30 minutes to obtain an acid-soluble solution;

[0038] (5) Stop heating, release the pressure, cool down to 70°C, add metered water to the above acid-soluble solution to adjust the concentration to TiO 2 =90g / l, then add aluminum powder (the mass ratio of aluminum powder...

Embodiment 2

[0041] Prepare trivalent titanium solution B as follows:

[0042] (1) Take a wash metatitanic acid slurry (TiO 2 =300g / l) and 98 acids are injected into the pressure vessel and mixed uniformly to obtain a mixture, and the liquid phase of the mixture is a sulfuric acid solution; the one-washed metatitanic acid slurry (by TiO 2 meter) and 98 acid (according to H 2 SO 4 The mass ratio of meter) is 1:2.4;

[0043] (2) record sulfuric acid solution mass concentration and be 12.3%;

[0044] (3) Then close the pressure vessel, and pressurize to control the internal pressure of the pressure vessel at 0.32Mpa;

[0045] (4) Heating the internal reaction system of the pressure vessel to boiling, and maintaining boiling for 40 minutes to obtain an acid-soluble solution;

[0046] (5) Stop heating, release the pressure, cool down to 70°C, add metered water to the above acid-soluble solution to adjust the concentration to TiO 2 =90g / l, then add aluminum powder (the mass ratio of alumin...

Embodiment 3

[0049] Trivalent titanium solution C was prepared as follows:

[0050] (1) Take a wash metatitanic acid slurry (TiO 2 =300g / l) and the concentrated sulfuric acid injection pressure vessel that mass concentration is 93% mixes uniformly, obtains mixture, and the liquid phase of described mixture is sulfuric acid solution; 2 In terms of) and concentrated sulfuric acid (according to H 2 SO 4 The ratio of mass) is 1:4.8;

[0051] (2) record sulfuric acid solution mass concentration and be 47.2%;

[0052] (3) Then close the pressure vessel, and pressurize to control the internal pressure of the pressure vessel at 0.20Mpa;

[0053] (4) Heating the internal reaction system of the pressure vessel to boiling, and maintaining boiling for 40 minutes to obtain an acid-soluble solution;

[0054] (5) Stop heating, release the pressure, cool down to 70°C, add metered water to the above acid-soluble solution to adjust the concentration to TiO 2 =90g / l, then add aluminum powder (the mass ...

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Abstract

The invention relates to a production process of titanium dioxide and particularly relates to a preparation method of a trivalent titanium solution. The preparation method of the trivalent titanium solution comprises the following steps: A, mixing primarily-washed metatitanic acid slurry (measured according to TiO2) and concentrated sulfuric acid (measured according to H2SO4) in a pressure container according to a mass ratio of 1 to (1.8-5); B, measuring the concentration of a sulfuric acid solution; C, pressurizing the inside of the pressure container according to the measured concentration and enabling the boiling point of the sulfuric acid solution in the pressure container to be not lower than 140 DEG C; D, heating and keeping boiling for at least 30 minutes; and E, stopping heating, releasing pressure, cooling, adding water for adjusting the concentration, adding aluminum powder and reducing tetravalent titanium in the solution to trivalent titanium to obtain the trivalent titanium solution. The preparation method of the trivalent titanium solution has the advantages that the problems of stacking of titanium gypsum and pollution are solved, and the production cost of the trivalent titanium solution can be obviously reduced.

Description

technical field [0001] The invention relates to a titanium dioxide production process, in particular to a sulfuric acid process titanium dioxide production process. Background technique [0002] Titanium dioxide is an important inorganic chemical raw material. It is non-toxic and harmless to health. It is the most important white pigment, accounting for 80% of all white pigments used. It is widely used in coatings, plastics, papermaking, printing inks, chemical fibers, and rubber. , cosmetics, food and other industries. At present, the total production of titanium dioxide in my country has reached 1.8 million tons. The production process of titanium dioxide mainly includes sulfuric acid method and chlorination method. The production process in my country is mainly sulfuric acid method. Its typical production process can be summarized as follows: [0003] (1) carry out acidolysis reaction with titanium concentrate or acid-soluble titanium slag and sulfuric acid, obtain tita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00
CPCC01G23/00C01G23/008
Inventor 蔡平雄潘远凤
Owner 广西顺风钛业有限公司
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