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High temperature anti-oxidation carbon coating and preparation method

A technology for oxidizing carbon and coatings, which is applied in the field of carbon preparation, and can solve problems such as poor sealing of carbon brick gaps, poor paste performance, and damage to the furnace body, and achieve high oxidation resistance and resistance to acid and alkaline substances Strong corrosion resistance and high mechanical strength

Active Publication Date: 2022-07-15
NINGXIA WENSHUN NEW CHARCOAL WOOD PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Hearth, as the main part of metal smelting, is directly in contact with molten metal, and bears the high baking temperature of molten iron, while the gap between carbon bricks becomes the weak part of smelting leakage or burning loss. In the prior art, paste is used to glue it. However, the performance of the paste is not good, and the sealing effect on the gap between the carbon bricks is not good, so that when the furnace body is used later, the high-temperature molten iron leaks from the gap, causing damage to the furnace body

Method used

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  • High temperature anti-oxidation carbon coating and preparation method
  • High temperature anti-oxidation carbon coating and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The raw materials are composed by weight: 34% electro-calcined anthracite powder, 15% silicon carbide fine powder, 8% graphite powder, 8% andalusite fine powder, 35% binder, electro-calcined anthracite powder The resistivity is 440Ω, the fineness is not less than 200 mesh, the silicon content of silicon carbide fine powder is 98%, the fineness is not less than 200 mesh, the degree of graphitization in the graphite powder is 99%, the fineness is not less than 200 mesh, and the fineness of andalusite is not less than 200 For this purpose, the adhesive is selected from CAROBRES T60 carbon-containing resin.

[0021] First dry-mix the electro-calcined anthracite powder, silicon carbide fine powder, graphite powder and andalusite fine powder, and after mixing evenly, preheat the adhesive to 30°C, then disperse the above mixed powder into the adhesive and stir. 5 hours until the mixture is uniform to obtain a coating.

Embodiment 2

[0023] The raw materials are composed by weight: 25% electric calcined anthracite powder, 12% silicon carbide fine powder, 5% graphite powder, 5% andalusite fine powder, 20% binder, calcined anthracite powder The resistivity is 400Ω, the fineness is not less than 200 mesh, the silicon content of the silicon carbide fine powder is 98%, the fineness is not less than 200 mesh, the degree of graphitization in the graphite powder is 99%, the fineness is not less than 200 mesh, and the fineness of andalusite is not less than 200 For this purpose, the adhesive is selected from carbon-containing resin CAROBRES T60.

[0024] First dry-mix the electro-calcined anthracite powder, silicon carbide fine powder, graphite powder, and andalusite fine powder, and after mixing evenly, preheat the adhesive to 40°C, then disperse the above mixed powder into the adhesive and stir. 5.5 hours until the mixture is uniform to obtain a coating.

Embodiment 3

[0026] The raw materials are composed by weight: 30% electric calcined anthracite powder, 20% silicon carbide fine powder, 10% graphite powder, 10% andalusite fine powder, 38% binder, calcined anthracite powder The resistivity is 420Ω, the fineness is not less than 200 mesh, the silicon content of the silicon carbide fine powder is 98%, the fineness is not less than 200 mesh, the degree of graphitization in the graphite powder is 99%, the fineness is not less than 200 mesh, and the fineness of andalusite is not less than 200 For this purpose, the adhesive is selected from carbon-containing resin CAROBRES T60.

[0027] First dry-mix electro-calcined anthracite powder, silicon carbide fine powder, graphite powder, and andalusite fine powder, and after mixing evenly, preheat the adhesive to 50°C, then disperse the above mixed powder into the adhesive and stir. 6 hours until the mixture is uniform to obtain a coating.

[0028] (1), after the paint samples prepared by these three ...

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Abstract

The high-temperature anti-oxidation carbon coating proposed by the present invention is composed of the following raw materials by weight: 20%-34% electric calcined anthracite powder, 12%-20% silicon carbide fine powder, 5%-10% graphite powder, 5%-10% graphite powder, 5% %‑10% of andalusite fine powder, 20%‑38% of binder, the electrical resistivity of calcined anthracite powder is less than 450Ω, the fineness is not less than 200 mesh, the silicon carbide fine powder has a silicon content greater than 98%, and the fineness is not less than 98%. Less than 200 mesh, the degree of graphitization in the graphite powder is more than 99%, the fineness is not less than 200 mesh, and the fineness of andalusite is not less than 200 mesh, and the carbon-containing resin CAROBRES T60 is used as the binder.

Description

technical field [0001] The invention relates to the technical field of carbon preparation, in particular to a high-temperature antioxidant carbon coating and a preparation method. Background technique [0002] As the main part of smelting metal, the hearth is in direct contact with the molten metal and can withstand the high baking temperature of molten iron, and the gap between the carbon bricks becomes a weak part of smelting leakage or burning. In the prior art, paste is used to stick it. However, the performance of the paste is not good, and the sealing effect on the gap of the carbon brick is not good, which leads to the leakage of high-temperature molten iron from the gap when the furnace body is used later, causing damage to the furnace body. SUMMARY OF THE INVENTION [0003] It is necessary to propose a high temperature antioxidant carbon coating. [0004] A high-temperature antioxidant carbon coating is composed of the following raw materials by weight: 20%-34% e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/02
CPCC04B26/02C04B2201/20C04B2201/32C04B2201/50C04B14/024C04B14/022C04B14/041C04B14/324
Inventor 邵建文
Owner NINGXIA WENSHUN NEW CHARCOAL WOOD PROD
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