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Water-cooled pipe wall spray coating

A technology of spraying paint and water-cooled tubes, which is applied in the field of spray paint preparation, which can solve the problems of high rebound rate and easy drop, and achieve the effects of long service life, small dust pollution and good adhesion

Inactive Publication Date: 2020-07-31
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a water-cooled pipe wall spray paint, which solves the problems of high rebound rate and easy drop of the water-cooled pipe spray paint in the prior art during furnace roof construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A water-cooled pipe wall spray coating, which is specifically made of the following raw materials in parts by weight: 30 parts of high-alumina bauxite aggregates with a particle size of 1-3 mm, and 10 parts of high-alumina bauxite aggregates with a particle size of 0.15-1 mm , 10 parts of high alumina fine powder with a particle size of 200 meshes, 5 parts of alumina micropowder, 1 part of Guangxi white mud, 2 parts of silica micropowder with a particle size of less than 3 mm, 1.5 parts of binder A, pure calcium aluminate cement 1 part and 0.5 part of explosion-proof fiber.

[0022] The above-mentioned binding agent A can specifically be Elkem SioxX-Flow product produced by Elkem.

[0023] After testing, the water-cooled pipe wall spray coating prepared by using the above raw materials can achieve the following properties: after the spray coating is cured at 110°C for 24 hours, the compressive strength can reach more than 30MPa, and the rebound rate of spraying construc...

Embodiment 2

[0025] A water-cooled pipe wall spray coating, which is specifically made of the following raw materials in parts by weight: 40 parts of high-alumina bauxite aggregates with a particle size of 1-3 mm, and 15 parts of high-alumina bauxite aggregates with a particle size of 0.15-1 mm , 25 parts of high alumina fine powder with a particle size of 200 meshes, 7.5 parts of alumina fine powder, 2 parts of Guangxi white mud, 4 parts of silica fine powder with a particle size of less than 3 mm, 3.5 parts of sodium hexametaphosphate, 2.2 parts of calcium nitrate and Explosion-proof fiber 0.8 parts.

[0026] After testing, the water-cooled pipe wall spray coating prepared by using the above raw materials can achieve the following properties: after the spray coating is cured at 110°C for 24 hours, the compressive strength can reach more than 30MPa, and the rebound rate of spraying construction is lower than 5%. When applied on the water-cooled pipe of the electric furnace, it will not bu...

Embodiment 3

[0028] A water-cooled pipe wall spray coating, which is specifically made of the following raw materials in parts by weight: 50 parts of high-alumina bauxite aggregates with a particle size of 1-3 mm, and 20 parts of high-alumina bauxite aggregates with a particle size of 0.15-1 mm , 40 parts of high-alumina fine powder with a particle size of 200 meshes, 10 parts of alumina micro-powder, 3 parts of Guangxi white mud, 6 parts of silica micro-powder with a particle size of less than 3 mm, 6.5 parts of sodium hexametaphosphate, and 2.5 parts of sodium silicate And 1 part of explosion-proof fiber.

[0029] After testing, the water-cooled pipe wall spray coating prepared by using the above raw materials can achieve the following properties: after the spray coating is cured at 110°C for 24 hours, the compressive strength can reach more than 30MPa, and the rebound rate of spraying construction is lower than 5%. When applied on the water-cooled pipe of the electric furnace, it will n...

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Abstract

The invention provides a water-cooled pipe wall spray coating. The water-cooled pipe wall spray coating is prepared from the following raw materials in parts by weight: 40-70 parts of high bauxite aggregate, 10-40 parts of high bauxite fine powder or corundum fine powder, 5-10 parts of aluminum oxide micro powder, 1-3 parts of clay powder, 2-6 parts of silicon dioxide micro powder and 3-10 parts of a composite additive, wherein the composite additive is a mixture of a binding agent A, pure calcium aluminate cement and explosion-proof fibers, a mixture of sodium hexametaphosphate, sodium silicate and explosion-proof fibers or a mixture of sodium hexametaphosphate, calcium nitrate and explosion-proof fibers. The water-cooled pipe wall spray coating has the beneficial effects that the prepared water-cooled pipe wall spray coating is good in caking property and is suitable for semi-dry spraying and wet spraying; dust pollution is small, the spraying thickness is easy to control, and the service life is long. The cost of the high bauxite aggregate is low; by adding the aluminum oxide micro powder and the clay powder, the caking property of the spray coating is improved, the plasticity of the spray coating is improved, the spraying kinetic energy generated by a spraying machine can be partially absorbed by the spray coating, and the spray coating can be firmly adhered on the wall ofa water-cooled pipe.

Description

technical field [0001] The invention relates to the technical field of spray paint preparation, in particular to a water-cooled tube wall spray paint. Background technique [0002] In the iron and steel smelting industry, the water cooling structure plays an important role. For example, the electric furnace cover is mainly made of water-cooled furnace cover composed of water-cooled tubes, the furnace cover and its surrounding structure in LF refining furnace are also mainly made of water-cooled tubes, and the splash guard in VD or VOD refining is also mainly composed of water-cooled tubes etc. The pipe wall of these water-cooled pipes will be impacted, worn, bonded and corroded by the splashed high-temperature steel slag during use, which will damage the water-cooled pipe wall over time, which will cause the cooling water inside the water-cooled pipe to leak into the molten steel. cause production accidents. [0003] Therefore, by spraying high-temperature-resistant spray...

Claims

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Application Information

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IPC IPC(8): C04B28/06
CPCC04B28/06C04B2111/00482C04B14/303C04B14/10C04B14/062C04B16/06C04B2103/0068C04B22/16C04B22/085C04B12/04
Inventor 赵冉何枫韩丽张晓波丁海瑞刘丽任林颜浩赵伟
Owner 北京利尔高温材料股份有限公司
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