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Insulating paint for changing current distribution of cathode

A technology for current distribution and insulating coatings, used in polyamide coatings, epoxy coatings, coatings, etc.

Inactive Publication Date: 2012-09-05
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no suitable coated insulating material for the cathode

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Table 1 Formulation composition of insulating coatings

[0038] Element Content (g / 1000g) Silicone resin 207 Epoxy resin E-44 150 polyamide resin 100 Aluminum oxide powder: 250 Mica powder 100 glass powder 50 Titanium dioxide 100 fumed silica 30 Polyvalent Carboxylic Acid Dispersant 5 Zinc naphthenate 7 A silane coupling agent 1 ＊ mixed solvent 1000

[0039] ＊ Note: The mixed solvent unit is ml

[0040] According to the formula composition in Table 1, the energy-saving cathode steel rod insulation layer coating is completed according to the following process:

[0041] The specific preparation process of insulating material of the present invention is as follows:

[0042] (1) The film-forming substance in the present invention is A+B+C;

[0043] (2) Weigh the film-forming substance according to a certain ratio, and dissolve it in a mixed solvent for use;

[0044] (3) Put the pi...

Embodiment 2

[0052] Table 2 Insulation coating formula composition table

[0053] Element Content (g / 1000g) Silicone resin 250 polyamide resin 150 Silicon nitride 260 talcum powder 100 Aluminum powder 60 Aluminum Tripolyphosphate 126 fumed silica 40 Polyvalent Carboxylic Acid Dispersant 7 Zinc naphthenate 5 A silane coupling agent 2 ＊ mixed solvent 1000

[0054] ＊Note: The mixed solvent unit is ml

[0055] According to the formula composition in Table 2, the insulation layer coating of the energy-saving cathode steel rod is completed according to the following process:

[0056] The specific preparation process of insulating material of the present invention is as follows:

[0057] (1) The film-forming substance in the present invention is A + C;

[0058] (2) Weigh the film-forming substance according to a certain ratio, and dissolve it in a mixed solvent for use;

[0059] (3) Put the pigments, fillers ...

Embodiment 3

[0067] Table 3 Insulation coating formula composition table

[0068] Element Content (g / 1000g) Silicone resin 220 polyamide resin 114 Alumina powder 220 Mica powder 75 talcum powder 75 asbestos powder 40 Aluminum powder 40 light calcium carbonate 150 fumed silica 50 Polyvalent Carboxylic Acid Dispersant 10 Zinc naphthenate 5 A silane coupling agent 1 ＊ mixed solvent 1200

[0069] ＊ Note: The mixed solvent unit is ml

[0070] According to the formula composition in Table 3, the insulation layer coating of the energy-saving cathode steel rod is completed according to the following process:

[0071] The specific preparation process of insulating material of the present invention is as follows:

[0072] (1) The film-forming substance in the present invention is A+C;

[0073] (2) Weigh the film-forming substance according to a certain ratio, and dissolve it in a mixed solvent for use; ...

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PUM

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Abstract

The invention relates to an insulating paint for changing current distribution of a cathode, relating to an insulating paint, in particular to an insulating paint for painting an aluminum electrolysis cathode. The insulating paint is characterized in that components of a raw material comprise resin for a film forming matter, a color filler and an auxiliary. The insulating paint is painted on an appointed position of the aluminum electrolysis cathode, thereby effectively changing a cathode current distribution situation, reducing the damage of horizontal current and realizing energy saving and consumption reduction. The invention has the characteristics of quick solidification, good insulativity, good thermal conductivity, high temperature resistance, strong adhesive force with a base body, convenience to construct and the like. Through a spray coating or brush coating method, a coating material with the thickness of 0.5-2mm is coated on the certain position of a cathode steel bar and is solidified for 4-5h at normal temperature, and a construction process is simple and convenient in an application process.

Description

technical field [0001] The invention relates to an insulating paint for changing the current distribution of a cathode, relating to an insulating paint, in particular to an insulating paint for coating an aluminum electrolytic cathode. Background technique [0002] During the operation of the aluminum electrolytic cell, when the current passes through the anode-melt-cathode carbon cathode and the cathode steel rod, a horizontal current will be generated inside the melt. Under the action of the magnetic field, this level of current will inevitably cause the aluminum liquid layer to fluctuate up and down, causing uneven pole distances and additional power consumption. In the current production of aluminum electrolytic cells, it is usually used to maintain a relatively high aluminum liquid layer in the electrolytic cell, usually at about 25cm, to reduce the impact on the electrolytic cell due to the fluctuation of the aluminum liquid. How to eliminate the adverse effects of th...

Claims

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Application Information

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IPC IPC(8): C09D5/25C09D183/00C09D177/00C09D163/00C09D7/12C25C3/08
Inventor 杨建红张刚张艳伟邱仕麟李旺兴乔佳
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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