Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of environment-friendly anode coating and its preparation method and application

An anode coating and environment-friendly technology, which is applied in the field of environment-friendly anode coating and its preparation, can solve problems such as the difficulty in promoting electrolytic cells, high carbon consumption per ton of aluminum, and carbon anode shedding, so as to reduce or avoid oxidation Shedding, avoiding oxidation and shedding, and saving carbon consumption

Active Publication Date: 2017-06-23
王二体
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of aluminum electrolysis, environmental protection, energy saving and consumption reduction are the production theme of the aluminum electrolysis industry. The traditional anodes are placed in the electrolytic cell. Because the carbon anode is affected by the high temperature of the electrolytic cell, some of the carbon anodes leak in the air, causing the carbon anode to fall off, Oxidation, resulting in high consumption of aluminum carbon per ton. Recently, some aluminum factories and scientific research units are also conducting anode carbon block spraying tests. Some of them are difficult to promote in electrolytic cells because of the high cost of spraying; the other part is anode spraying. After that, it was placed in the electrolytic tank, the effect was not outstanding, and the anode coating test was terminated.

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 kind of environment-friendly anode coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] As shown in the accompanying drawings, the environmentally friendly anode coating of this patent can be prepared by the following method:

[0026] (1) Pour pure alumina into a container, then add water and stir evenly at a mass ratio of 10 to 2.5 to prepare paste alumina;

[0027] (2) Paste alumina:alumina sol=10:1.3 mass ratio, uniformly mixed to prepare a mixed coating; wherein, the alumina sol is a water sol with a weight content of hydrated alumina of 20-25%;

[0028] (3) Spray the mixed paint obtained in step (2) on the surface required by the prebaked anode with a putty sprayer, and dry to obtain an environmentally friendly anode coating.

[0029] The prebaked anode coated with an environmentally friendly anode coating is dried and placed in an electrolytic cell for electrolytic production. The obtained results are: the amount of carbon slag in the electrolytic cell is obviously reduced, the anode is not oxidized, the current efficiency of the electrolytic cell i...

Embodiment 2

[0031] As shown in the accompanying drawings, the environmentally friendly anode coating of this patent can be prepared by the following method:

[0032] (1) Pour pure alumina into a container, then add water and stir evenly at a mass ratio of 10 to 2.5 to prepare paste alumina;

[0033] (2) Paste alumina: alumina sol = 10:1 mass ratio, mixed evenly to prepare mixed coating;

[0034] (3) Spray the mixed paint obtained in step (2) on the surface required by the prebaked anode with a putty sprayer, and dry to obtain an environmentally friendly anode coating. The thickness of the environment-friendly anode coating is 0.5-2mm. Spray 1-3 times on the required surface of the prebaked anode carbon block with a putty sprayer. The coating is on the side of the prebaked anode carbon block more than 15cm away from the bottom surface, and the upper surface of the prebaked anode carbon block; the bottom surface of the prebaked anode carbon block and the side of the prebaked anode carbon ...

Embodiment 3

[0038] As shown in the accompanying drawings, the preparation method of the environmentally friendly anode coating of this patent is the same as in Example 2. The prebaked anode coated with an environmentally friendly anode coating is dried and placed in an electrolytic cell for electrolytic production. The obtained results are: the amount of carbon slag in the electrolytic cell is obviously reduced, the anode is not oxidized, the current efficiency of the electrolytic cell is improved, and the cycle of the anode is extended by 1 to 1.2 hours.

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an environment-friendly anode coating as well as a preparation method and application thereof. The environment-friendly anode coating is used for covering the surface of a prebaked anode and is a uniform mixture comprising alumina, water and alumina sol with the weight ratio of 10:(2-3):(0.5-1.5); a putty coating machine is adopted to spray the uniform mixture on the part, 15 cm above the bottom surface, of the side part of a prebaked anode carbon block and on the upper surface of the prebaked anode carbon block except the bottom surface and the part, 15 cm below the bottom surface, of the side part of the prebaked anode carbon block, and then the environment-friendly anode coating is obtained after drying. The environment-friendly anode coating is reasonable in formula and can effectively prevent air from being in contact with the anode carbon block so as to reduce or avoid oxidation falling of the anode carbon block; the environment-friendly anode coating does not contain other impurity and does not affect the virgin aluminum quality of an electrolytic cell; the carbon consumption can be reduced by about 17 kg / t-Al, and the current efficiency of the electrolytic cell can be improved by about 0.2%, so that the cost of each ton of virgin aluminum is reduced.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolysis application, in particular to an environment-friendly anode coating and its preparation method and application. Background technique [0002] In the production process of aluminum electrolysis, environmental protection, energy saving and consumption reduction are the production theme of the aluminum electrolysis industry. The traditional anodes are placed in the electrolytic cell. Because the carbon anode is affected by the high temperature of the electrolytic cell, some of the carbon anodes leak in the air, causing the carbon anode to fall off, Oxidation, resulting in high consumption of aluminum carbon per ton. Recently, some aluminum factories and scientific research units are also conducting anode carbon block spraying tests. Some of them are difficult to promote in electrolytic cells because of the high cost of spraying; the other part is anode spraying. Finally, it was placed i...

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): C25C3/12
Inventor 任必军王二体刘兵其牛利兵杨双平
Owner 王二体