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Graphite electrode coating and preparation method thereof

A graphite electrode and coating technology, applied in anti-corrosion coatings, fire-retardant coatings, coatings, etc., can solve problems such as poor results, achieve outstanding anti-oxidation performance, facilitate transportation, and reduce steelmaking costs.

Inactive Publication Date: 2020-08-18
大同通扬新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the prior art, most of the coatings are not effective during use, and cannot meet the requirements of reducing electrode consumption and prolonging life. Therefore, we have designed a graphite electrode coating and its preparation method to solve the above problems. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A graphite electrode coating proposed by the present invention comprises the following raw materials in parts by weight: 50 parts of natural graphite powder, 30 parts of silicon carbide powder, 32 parts of dense corundum powder, 1 part of dispersant, and 1 part of boride.

[0023] A preparation method of graphite electrode coating, comprising the following steps,

[0024] S1, raw materials such as silicon carbide powder and dense corundum powder are initially ground through a pulverizer, and then screened through a 400-mesh standard sieve after grinding;

[0025] S2, add industrial phosphoric acid in silicon carbide powder and natural graphite powder, stir by agitator, obtain mixed solution A;

[0026] S3, adding industrial phosphoric acid to the dense corundum powder, boride and dispersant, and stirring with a stirrer to obtain a mixed solution B;

[0027] S4, mixing the mixed solution A, the mixed solution B and water to obtain the electrode coating.

Embodiment 2

[0029] A graphite electrode coating proposed by the present invention includes the following raw materials in parts by weight: 53 parts of natural graphite powder, 35 parts of silicon carbide powder, 33 parts of dense corundum powder, 3 parts of dispersant, and 3 parts of boride.

[0030] A preparation method of graphite electrode coating, comprising the following steps,

[0031] S1, raw materials such as silicon carbide powder and dense corundum powder are initially ground through a pulverizer, and then screened through a 400-mesh standard sieve after grinding;

[0032] S2, add industrial phosphoric acid in silicon carbide powder and natural graphite powder, stir by agitator, obtain mixed solution A;

[0033] S3, adding industrial phosphoric acid to the dense corundum powder, boride and dispersant, and stirring with a stirrer to obtain a mixed solution B;

[0034] S4, mixing the mixed solution A, the mixed solution B and water to obtain the electrode coating.

Embodiment 3

[0036] A graphite electrode coating proposed by the present invention includes the following raw materials in parts by weight: 55 parts of natural graphite powder, 40 parts of silicon carbide powder, 35 parts of dense corundum powder, 5 parts of dispersant, and 5 parts of boride.

[0037] A preparation method of graphite electrode coating, comprising the following steps,

[0038] S1, raw materials such as silicon carbide powder and dense corundum powder are initially ground through a pulverizer, and then screened through a 400-mesh standard sieve after grinding;

[0039] S2, add industrial phosphoric acid in silicon carbide powder and natural graphite powder, stir by agitator, obtain mixed solution A;

[0040] S3, adding industrial phosphoric acid to the dense corundum powder, boride and dispersant, and stirring with a stirrer to obtain a mixed solution B;

[0041] S4, mixing the mixed solution A, the mixed solution B and water to obtain the electrode coating.

[0042] ...

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Abstract

The invention discloses a graphite electrode coating and a preparation method thereof. The graphite electrode coating comprises the following raw materials in parts by weight: 50-55 parts of natural graphite powder, 30-40 parts of silicon carbide powder, 32-35 parts of compact corundum powder, 1-5 parts of a dispersing agent and 1-5 parts of boride. The graphite electrode coating is prepared fromnatural graphite, of which the conductivity is good, so that graphitization is not needed; therefore, the problems of high energy consumption and graphite electrode conductivity are solved; the raw materials are screened after primary grinding and crushing, the anti-oxidation coating is prepared in a particle size distribution mode, the compactness of the coating is obviously improved, cracks andslits of the coating are greatly reduced, and the quality of the coating is obviously improved.

Description

technical field [0001] The invention relates to the technical field of graphite electrodes, in particular to a graphite electrode coating and a preparation method thereof. Background technique [0002] Graphite electrode refers to petroleum coke, pitch coke as aggregate, coal tar pitch as binder, a kind of resistant electrode made by calcination of raw materials, crushing and grinding, batching, kneading, molding, roasting, impregnation, graphitization and mechanical processing. High-temperature graphite conductive material, called artificial graphite electrode (referred to as graphite electrode), is different from natural graphite electrode prepared from natural graphite. The high-temperature heating body can be divided into ordinary power, high power and ultra-high power according to different indicators of working power. [0003] Graphite material begins to oxidize from about 400°C, and the oxidation increases sharply after exceeding 750°C, and the oxidation also intensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/18C09D7/61C09D5/08
CPCC09D1/00C09D5/08C09D5/18C09D7/61
Inventor 刘雁伟
Owner 大同通扬新材料有限公司
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