Preparation method of amorphous titanium dioxide for lithium titanate

A titanium dioxide, amorphous technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of not meeting the requirements, and achieve the effect of easy implementation, low production cost and good dispersion state

Active Publication Date: 2015-08-19
SHANDONG DONGJIA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Titanium dioxide produced by these two production processes is mainly used in coatings, papermaking, plastics, inks and other industries. It is used as an inorganic pigment, and its composition is anatase or rutile crystal structure. , must be treated with salt, such as aluminum, silicon, potassium, phosphorus, etc., the content of titanium dioxide is between 85.0-98.0%, and contains other impurity elements. Therefore, these titanium dioxide cannot meet the requirements of titanium dioxide for lithium titanate batteries. Require

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  • Preparation method of amorphous titanium dioxide for lithium titanate

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] Take 1000ml of titanium sulfate solution with a concentration of 60g / L, heat it to 50°C titanium sulfate, and evenly add it to 2000ml of deionized water heated to 60°C, and control the stirring speed at 10 rpm. After stirring for 20 minutes, put the material into the hydrolysis tank, 120ml of ammonium carbonate solution with a mass concentration of 5% has been added in advance in the hydrolysis tank, put the metatitanic acid into the material storage tank after hydrolysis together and let it stand for 12 hours, then put the material liquid Put it into the centrifuge where the filter cloth has been laid, and slowly turn on the centrifuge at a speed of 5 rpm. After the material is dried, add deionized water three times the volume of the material in three times, add in three times for washing, and remove To remove impurity ions, the temperature of deionized water is controlled at 40°C. Put the washed material into a stainless steel tray, add TMP with a mass concentration o...

Embodiment 2

[0035] Take 1000ml of titanium sulfate solution with a concentration of 60g / L, heat it to 60°C titanium sulfate, and evenly add it to 2000ml of deionized water heated to 70°C, and control the stirring speed at 20 rpm. After stirring for 30 minutes, put the material into the hydrolysis tank, 120ml of ammonium carbonate solution with a mass concentration of 8% has been added in advance in the hydrolysis tank, put the metatitanic acid into the material storage tank after hydrolysis and let it stand for 15 hours, then put the material liquid Put it into the centrifuge where the filter cloth has been laid, and slowly turn on the centrifuge at a speed of 8 rpm. After the material is dried, add deionized water three times the volume of the material in three times, add washing in three times, remove To remove impurity ions, the temperature of deionized water is controlled at 40°C. Put the washed material into a stainless steel tray, add TMP with a mass concentration of 3% in an amount...

Embodiment 3

[0037] Take 1000ml of titanium sulfate solution with a concentration of 60g / L, heat it to 70°C titanium sulfate, and evenly add it to 2000ml of deionized water heated to 80°C, and control the stirring speed at 20 rpm. After stirring for 30 minutes, put the material into the hydrolysis tank, 120ml of ammonium carbonate solution with a mass concentration of 7% has been added in advance in the hydrolysis tank, put the metatitanic acid into the material storage tank after hydrolysis and let it stand for 12 hours, then put the material liquid Put it into the centrifuge where the filter cloth has been laid, and slowly turn on the centrifuge at a speed of 8 rpm. After the material is dried, add deionized water three times the volume of the material in three times, add washing in three times, remove To remove impurity ions, the temperature of deionized water is controlled at 40°C. Put the washed material into a stainless steel tray, add TMP with a mass concentration of 3% in an amount...

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Abstract

The invention belongs to the technical field of preparation of titanium dioxide and particularly relates to a preparation method of amorphous titanium dioxide for lithium titanate. The preparation method of amorphous titanium dioxide for lithium titanate comprises the following steps: hydrolyzing titanium sulfate, exchanging ions and deeply removing impurities of hydrolyzed product, drying and depolymerizing slurry to prepare the amorphous titanium dioxide for lithium titanate. The preparation method of amorphous titanium dioxide for lithium titanate is liable to implement and low in production cost. By virtue of the method, similarly spherical particles can be prepared; the ideal effect of washing and removing the impurities of the particles can be achieved; the particles are extremely low in content of included impurities; the processing of subsequent lithium titanate battery materials is greatly facilitated. The final product prepared by the method is free of secondary aggregation and excellent in dispersion state, and can be easily used in the downstream industry.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide preparation, and in particular relates to a preparation method of amorphous titanium dioxide for lithium titanate. Background technique [0002] With the development of new energy and green industry, due to the "zero strain" of lithium titanate, which improves the cycle performance and service life of the electrode, the development of new battery lithium titanate materials is becoming more and more extensive. Titanium dioxide, an important material used as a lithium titanate battery material, cannot meet the requirements at present, hindering the development of lithium titanate batteries. At present, titanium dioxide is mainly produced by the sulfuric acid process in China, and the chloride process is mainly used abroad. Titanium dioxide produced by these two production processes is mainly used in coatings, papermaking, plastics, inks and other industries. It is used as an inorganic pigm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053
Inventor 李化全孙鹏
Owner SHANDONG DONGJIA GRP CO LTD
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