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Coating for steel ladle magnesia carbon brick and application method thereof

A technology of ladle magnesia-carbon brick and ladle magnesium, which is applied in the field of coating for ladle magnesia-carbon brick, can solve the problems of shortening the service life of the ladle, reducing the quality of steel, and achieving the effect of reducing the possibility of oxidation

Inactive Publication Date: 2017-02-08
浙江长兴强立耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As the requirements for steel quality are getting higher and higher, the requirements for ladle smelting are becoming more and more stringent, and the requirements for magnesia-carbon bricks used in ladles are also getting higher and higher. At present, during the baking and use of ladle magnesia-carbon bricks, due to the A layer of 10-30mm decarburized oxide layer is generally formed on the surface of magnesia carbon bricks, which will greatly shorten the service life of the ladle and reduce the quality of the steel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A coating for ladle magnesia-carbon bricks, the weight percent of raw materials is: 20-25% of clay clinker powder; 10-12% of clay raw meal powder; 8-12% of boron glass powder; 5% of silicon micropowder, silicon carbide fine powder 5%; solid water glass 5%, Guangxi white clay 15-20%; albite powder 25-27%, yellow dextrin 2%, and the weight percentage sum of all the above raw materials is 100%.

Embodiment 2

[0014] A coating for ladle magnesia-carbon bricks, the weight percent of raw materials is: clay clinker powder 25-30%; clay raw meal powder 12-15%; boron glass powder 12-15%; silicon micropowder 5%, silicon carbide fine powder 5%; solid water glass 5%, Guangxi white clay 20-25%; albite powder 27-30%, yellow dextrin 2%, and the weight percentage sum of all the above raw materials is 100%.

Embodiment 3

[0016] A method for using a coating for ladle magnesia carbon bricks, comprising the following steps:

[0017] (1) Put the paint for ladle magnesia-carbon brick into the mixer, and add water to stir for 5-15 minutes to obtain the mixture of paint for ladle magnesia-carbon brick;

[0018] (2) After stirring, sprinkle the coating mixture for ladle magnesia carbon bricks directly on the surface of the ladle magnesia carbon bricks that have been built.

[0019] Preferably, in step (1), the weight of added water is 10-20% of the coating for ladle magnesia carbon brick.

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PUM

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Abstract

The present invention discloses a coating for a steel ladle magnesia carbon brick. The coating comprises the following raw materials in weight percentage: 20-30% of clay chamotte powder, 10-15% of clay raw material powder, 8-15% of boron glass powder, 5% of silica powder, 5% of silicon carbide fine powder, 5% of solid sodium silicate, 15-25% of Guangxi white clay, 25-30% of sodium feldspar powder, and 2% of yellow dextrin. The sum of the weight percentages of all the above raw materials is 100%. According to the invention, when the coating is baked, the coating is gradually melted into the glass state along with the temperature increasing process. In this way, the coating is adhered to the surface of the magnesia carbon brick. Therefore, the magnesia carbon brick is isolated from the air and is prevented from being in contact with the air by the coating. As a result, the oxidation possibility of the magnesia carbon brick is reduced.

Description

technical field [0001] The invention relates to a coating for ladle magnesia-carbon bricks and a using method thereof. Background technique [0002] As the requirements for steel quality are getting higher and higher, the requirements for ladle smelting are becoming more and more stringent, and the requirements for magnesia-carbon bricks used in ladles are also getting higher and higher. At present, during the baking and use of ladle magnesia-carbon bricks, due to A 10-30mm decarburized oxide layer is generally formed on the surface of the magnesia carbon brick, which will greatly shorten the service life of the ladle and reduce the quality of the steel. Contents of the invention [0003] In view of the above problems, the present invention provides a coating for ladle magnesia-carbon bricks, which is coated on the surface material of magnesia-carbon bricks to block the contact between external oxygen and carbon in magnesia-carbon bricks, so as to reduce the oxide layer an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/00C04B41/86
CPCC03C8/00C04B41/009C04B41/5022C04B41/86C04B35/66
Inventor 侯兆田胡竹生吴国强
Owner 浙江长兴强立耐火材料有限公司
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