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Preparation process of nanometer titanium dioxide or synthetic compound thereof

A nano-titanium dioxide and titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of particle size and purity, which are difficult to achieve, stay, and difficult to mass-produce.

Inactive Publication Date: 2019-06-21
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the titanium dioxide produced in the existing technology is difficult to meet the requirements for application in lithium titanate batteries, photocatalysts, etc. in terms of particle size and purity, and is difficult to produce on a large scale, staying at the laboratory level

Method used

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  • Preparation process of nanometer titanium dioxide or synthetic compound thereof
  • Preparation process of nanometer titanium dioxide or synthetic compound thereof
  • Preparation process of nanometer titanium dioxide or synthetic compound thereof

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Embodiment Construction

[0100] The above-mentioned technical features and advantages of the present invention will be described in more detail below in conjunction with the embodiments.

[0101] A preparation process of nano-titanium dioxide or its composite, comprising: step 1, pulverization; step 2, acidolysis; step 3, sedimentation; step 4, crystallization; step 5, hydrolysis; step 6, one-time washing; step 7, bleaching ; Step 8, washing twice; Step 9, preparation of seed crystals; Step 10, salt treatment; Step 11, calcining; Step 12, pulverizing; Step 13, synthesis of titanium dioxide or its composite; 15. Pressure drying; Step 16, flash drying; Step 17, micron crushing; Step 18, powder selection and classification; Step 19, pulse dust removal.

[0102] Step 5: injecting the treated crystal seeds into a hydrolysis tank for hydrolysis, and the titanyl sulfate in the titanium liquid is hydrolyzed by induction of active crystal seeds under heating conditions to produce hydrated titanium dioxide with...

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Abstract

The invention relates to a preparation process of nanometer titanium dioxide or a synthetic compound thereof. According to the present invention, treatment is performed through three-washing filter press treating, pressing drying, flash evaporation drying, micro-crushing and other processes; the particles of the prepared titanium dioxide or the synthetic compound thereof have characteristics of smooth surface, uniform shape and controllable particle size; and the method has characteristics of simple and feasible process and low cost, and is suitable for industrial mass production.

Description

technical field [0001] The invention relates to the field of preparation of titanium dioxide or its composition, especially the production field of nanometer titanium dioxide or its composition. Background technique [0002] Nanoscale titanium dioxide, also known as titanium dioxide. The product appearance is white loose powder. With anti-thread, antibacterial, self-cleaning, anti-aging properties, it can be used in cosmetics, functional fibers, plastics, inks, coatings, paints, fine ceramics and other fields. [0003] However, in the production of lithium titanate batteries, photocatalysts and other fields, the requirements for titanium dioxide are very high. However, the titanium dioxide produced in the existing technology is difficult to meet the requirements of lithium titanate batteries, photocatalysts, etc. in terms of particle size and purity, and is difficult to produce on a large scale, staying at the laboratory level. The object of the present invention aims at ...

Claims

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Application Information

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IPC IPC(8): C01G23/047C01G23/08
Inventor 柴春旺
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