Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for electrically converting aluminum chloride into aluminum oxide

A technology of aluminum chloride and alumina, applied in the field of electrolysis, can solve the problems of high energy consumption, high cost, large pollution, etc., and achieve the effects of high purity, short process and lower production cost

Active Publication Date: 2017-09-19
NORTHEASTERN UNIV
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the method for electroconverting aluminum chloride into alumina in the present invention is to use a wide range of aluminum chloride resources to obtain metallurgical grade alumina or chemical alumina products in a short process and with low energy consumption, so as to avoid or solve the problems of the prior art There are problems such as high energy consumption, high cost and heavy pollution in the

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
  • Method for electrically converting aluminum chloride into aluminum oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In this embodiment, the method for electroconverting aluminum chloride into alumina is carried out in the following steps:

[0050] Step 1: electrolyze the aluminum chloride aqueous solution, the process parameters of the electrolysis are: the temperature is 20°C, and the voltage of the electrolysis is 3V;

[0051] In described step 1, the mass concentration of described aluminum chloride aqueous solution is 50g / L;

[0052] Step 2: Introduce high-purity carbon dioxide gas into the cathode chamber 3 electrolyte in the cationic membrane electrolyzer with a flow rate of 20m 3 / h, make the precipitation of hydrocarbon oxygen compounds that directly generate aluminum in the cathode chamber 3 of the cationic membrane electrolyzer;

[0053] In the step 2, the high-purity carbon dioxide gas is introduced through the vent hole at the bottom of the cathode chamber 3 of the electrolytic cell.

[0054] Step 3: Stir the cathode chamber 3 of the cationic membrane electrolyzer, the ...

Embodiment 2

[0061] In this embodiment, the method for electroconverting aluminum chloride into alumina is carried out in the following steps:

[0062] Step 1: electrolyzing the aluminum chloride aqueous solution, the process parameters of the electrolysis are as follows: the temperature is 90°C, and the voltage of the electrolysis is 20V;

[0063] In described step 1, the mass concentration of described aluminum chloride aqueous solution is 200g / L;

[0064] Step 2: Introduce high-purity carbon dioxide gas into the cathode chamber 3 electrolyte in the cationic membrane electrolyzer with a flow rate of 80m 3 / h, make the precipitation of hydrocarbon oxygen compounds that directly generate aluminum in the cathode chamber 3 of the cationic membrane electrolyzer;

[0065] In the step 2, the high-purity carbon dioxide gas is introduced through the vent hole at the bottom of the cathode chamber 3 of the electrolytic cell.

[0066] Step 3: Stir the cathode chamber 3 of the cationic membrane ele...

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

PropertyMeasurementUnit
melting pointaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of electrolysis, particularly relates to a method for electrically converting aluminum chloride into aluminum oxide, and aims at obtaining metallurgy-level aluminum oxide or chemical aluminum oxide products in short process at low energy consumption by means of wide aluminum chloride resources so as to avoid or solve the problems that in the prior art, energy consumption is high, the cost is high, and pollution is severe. According to the electrolysis method, aluminum chloride can be directly converted into aluminum compound precipitates, and an electrolysis technology is high in automation degree and short in process. Compared with a traditional aluminum oxide preparation method, the method has the advantages that the evaporation and concentration process and equipment thereof are omitted, therefore, the production cost can be reduced, and the production efficiency can be improved; aluminum oxide is produced through the electrolysis technology, the purity of by-products including chlorine and hydrogen in the production process is high, the by-products can be directly dried and utilized, electrolyte is recycled after being filtered, no pollution product is generated in the process, and environmental friendliness and harmlessness are achieved; metallurgy-level aluminum oxide or chemical aluminum oxide is obtained by roasting the aluminum compounds obtained through electrolysis, and the obtained product is high in purity.

Description

technical field [0001] The invention belongs to the technical field of electrolysis, and in particular relates to a method for electroconverting aluminum chloride into alumina. Background technique [0002] Alumina is a white amorphous powder, insoluble in water, soluble in inorganic acids and alkaline solutions, with a melting point of 2050°C and a boiling point of 2980°C. At present, it is generally believed that alumina mainly has two variants, α-type and γ-type, and γ=Al 2 o 3 It is made by dehydrating aluminum hydroxide at a low temperature of 140-150°C. It is also called activated alumina and aluminum glue in industry. γ-type alumina is insoluble in water, but soluble in strong acid or strong alkali solution, and it will be completely transformed into α-type alumina when heated to 1200°C. [0003] According to different uses, alumina is divided into two categories: one is alumina used as raw material for electrolytic aluminum, called metallurgical grade alumina; the...

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 Applications(China)
IPC IPC(8): C25B1/00C25B9/08C25B9/06C25B1/26C25B1/10C01F7/30C25B9/17C25B9/19
CPCC25B1/00C25B1/26C01F7/30C25B1/04C25B9/73C25B9/17C25B9/19Y02E60/36
Inventor 张廷安刘燕豆志河吕国志潘喜娟赵秋月牛丽萍傅大学张伟光韩秀秀
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com