Check patentability & draft patents in minutes with Patsnap Eureka AI!

A method of powder material coating titanium dioxide

A powder material, titanium dioxide technology, applied in titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide and other directions, can solve the problems of poor coating uniformity, low utilization rate of titanium salt, and difficult to handle coating residues, etc. Achieve the effect of increasing the utilization rate, improving the coating effect, and eliminating titanium dioxide inclusions

Active Publication Date: 2019-04-26
JINCHUAN GROUP LIMITED +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing coating residues that exist when coating a layer of titanium dioxide on the surface of powder materials by titanium salt hydrolysis are difficult to handle, the coating uniformity is poor, and the utilization rate of titanium salt is low.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method of powder material coating titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Put 100g of lithium cobaltate into a humidity regulator and stir for 1 hour under the condition of 80% humidity;

[0022] 2) Sampling and testing until the moisture content of the powder material is 10%, then take it out;

[0023] 3) Put the lithium cobalt oxide in 2) into the atmosphere reactor, add 500ml of titanium tetrachloride solution under the condition of nitrogen protection, and soak for 2 hours to obtain a mixed slurry;

[0024] 4) Filter the mixed slurry in 3) with a filter press to obtain filter powder;

[0025] 5) Put the filtered filter powder into a fluidized bed for drying at a drying temperature of 200°C;

[0026] 6) Calcining the dried filter powder in 5) at 700°C for 2 hours to obtain lithium cobaltate coated with anatase titanium dioxide.

[0027] figure 1 It can be seen that the product obtained by this method is evenly coated and free of inclusions.

Embodiment 2

[0029] 1) Put 100g of nickel-cobalt lithium manganese oxide into a humidity regulator and stir for 2 hours under the condition of 50% humidity;

[0030] 2) Sampling and testing until the moisture content of the powder material is 20%, then take it out;

[0031] 3) Put the lithium nickel cobalt manganese oxide in 2) into the atmosphere reactor, add 100ml of titanium tetrachloride solution under the condition of nitrogen protection, and soak for 1 hour to obtain a mixed slurry;

[0032] 4) Filter the mixed slurry in 3) with a filter press to obtain filter powder;

[0033] 5) Put the filtered filter powder into a vacuum drying oven for drying at a drying temperature of 150°C;

[0034] 6) Calcining the dried filter powder in 5) at 850° C. for 3 hours to obtain lithium cobalt manganate coated with rutile titanium dioxide.

[0035] The invention utilizes the characteristics of hydrolysis of titanium salt, especially pretreating the powder material before hydrolyzing and calcining....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for coating a powder material with titanium dioxide. The method comprises the following steps of: stirring the powder material for a certain time under a certain air humidity condition; testing, and until the powder material reaches a certain moisture content, taking out the powder material; adding titanium salt solution into the powder material to soak under the nitrogen protection condition until a hydrolysis reaction is finished; then after filtering the powder material, carrying out drying; finally, calcining the dried powder material for a certain time, and obtaining an anatase or rutile titanium dioxide coated layer at different temperatures. According to the method disclosed by the invention, a utilization rate of the titanium salt is greatly increased, and one layer of titanium dioxide is ensured to be only uniformly sprayed on the surface of the powder material, so that phenomena of difficulty in control on a coating effect, low utilization rate of the titanium salt and mixing of titanium dioxide in a product, which are caused by generally coating the powder material under the conditions of titanium salt gel and the like, are reduced.

Description

technical field [0001] The invention belongs to the field of material preparation and relates to powder material coating technology, in particular to a method for powder material coating titanium dioxide. Background technique [0002] Single-phase powder materials are often affected to a certain extent due to some structural and performance limitations. Therefore, the research on the surface modification of powder, surface modification and even the use of surface coating technology to change the phase structure and properties of materials has been developed. In recent years, these aspects, especially in the preparation and application of battery cathode materials, nanomaterials, have made great progress. [0003] The surface modification of powder is the most important way to solve the agglomeration and surface modification of ultrafine powder. The surface modification of the powder is mainly to improve the surface chemical and physical properties of the powder, to improve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/08C01G23/053C01G51/00C01G53/00
CPCC01G23/053C01G23/0536C01G23/08C01G51/42C01G53/006C01P2004/84
Inventor 常全忠郭幸郭燕平崔永福王国超谭晓红何艳乔艳芬张红芳
Owner JINCHUAN GROUP LIMITED
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com