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Anti-erosion blast furnace iron runner self-flowing castable and preparation method thereof

A castable and corrosion-resistant technology, which is applied in the field of refractory materials, can solve the problems of increasing the labor intensity of workers in front of the furnace, shortening the service life of iron trench materials, and increasing slag erosion, so as to enhance the slag erosion resistance and improve The effect of one-pass iron quantity and prolonging service life

Active Publication Date: 2018-09-07
北京联合荣大工程材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the use of the iron trench material, it needs to be mixed with water and poured on site. Because the amount of water added will lead to large porosity of the material and the material will not be dense, which will further increase the erosion of slag, and destroy the overall structure of the iron trench, shortening the life of the iron trench material. service life, resulting in a large consumption of iron refractories per ton, which is not environmentally friendly. In addition, the labor intensity of the workers in front of the furnace is increased.
[0004] Therefore, it is necessary to design a new type of self-flowing castable for blast furnace iron trough to solve the problems of large porosity and poor material compactness caused by excessive water consumption in the current blast furnace iron trough preparation process, so as to improve the corrosion resistance of iron trough

Method used

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  • Anti-erosion blast furnace iron runner self-flowing castable and preparation method thereof
  • Anti-erosion blast furnace iron runner self-flowing castable and preparation method thereof

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Embodiment 1

[0032] The embodiment of the present invention provides an erosion-resistant self-flowing castable for blast furnace iron trough and its preparation method, which solves the problems of high porosity and poor material compactness caused by excessive water consumption in the current preparation process of blast furnace iron trough.

[0033] In one aspect of the embodiments of the present invention, an erosion-resistant self-flowing castable for blast furnace iron trough is provided.

[0034] The raw material composition and mass ratio of an erosion-resistant self-flowing castable for blast furnace iron trough provided by the embodiment of the present invention are as follows: 40-60 parts by mass of brown corundum particles, 10-20 parts by mass of white corundum particles, 10-20 parts by mass of silicon carbide powder 15 parts by mass, 3-5 parts by mass of silicon micropowder, 3-5 parts by mass of spherical pitch, 5-7 parts by mass of activated alumina micropowder, 1-2 parts by m...

Embodiment 2

[0047] This embodiment provides an erosion-resistant self-flowing castable for blast furnace iron trough, the proportion of each component is: 45 parts by mass of brown corundum particles, 18 parts by mass of white corundum particles, 14 parts by mass of silicon carbide powder, and 5 parts by mass of silicon micropowder parts, 4 parts by mass of spherical pitch, 7 parts by mass of activated alumina micropowder, 2 parts by mass of admixture, and 0.8 parts by mass of OP emulsifier.

[0048] Among them, the OP emulsifier is the condensation product of alkylphenol and ethylene oxide, and the model is OP-15.

[0049] The particle size of brown corundum particles is 5-8mm and 3-5mm, Al 2 o 3 The mass percentage is greater than or equal to 90%.

[0050] The particle diameters of the white corundum particles are 1-3mm and 0.074-1mm. al 2 o 3 The mass percentage is greater than or equal to 90%.

[0051] The particle size of silicon carbide powder is 0.074-1mm and 0-0.074mm, and t...

Embodiment 3

[0055] This embodiment provides an erosion-resistant self-flowing castable for blast furnace iron trough. The proportion of each component is: 42 parts by mass of brown corundum particles, 20 parts by mass of white corundum particles, 14.5 parts by mass of silicon carbide powder, and 4 parts by mass of silicon micropowder parts, 3 parts by mass of spherical pitch, 6.5 parts by mass of activated alumina micropowder, 1.5 parts by mass of admixture, and 0.55 parts by mass of OP emulsifier.

[0056] Among them, the OP emulsifier is the condensation product of alkylphenol and ethylene oxide, and the model is OP-20.

[0057] The particle size of brown corundum particles is 5-8mm and 3-5mm, Al 2 o 3 The mass percentage is greater than or equal to 90%.

[0058] The particle diameters of the white corundum particles are 1-3mm and 0.074-1mm. al 2 o 3 The mass percentage is greater than or equal to 90%.

[0059] The particle size of silicon carbide powder is 0.074-1mm and 0-0.074mm...

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Abstract

The embodiment of the invention provides an anti-erosion blast furnace iron runner self-flowing castable and a preparation method thereof. The anti-erosion blast furnace iron runner self-flowing castable is prepared from the following raw materials: 40 to 60 parts of brown fused alumina particles, 10 to 20 parts of white fused alumina powder, 10 to 15 parts of silicon carbide powder, 3 to 5 partsof silicon micropowder, 3 to 5 parts of spherical asphalt, 5 to 7 parts of activated aluminum oxide micropowder, 1 to 2 parts of additive, 0.5 to 1 part of OP emulsifying agent and 3.5 to 4.2 parts ofwater. According to the anti-erosion blast furnace iron runner self-flowing castable provided by the embodiment of the invention, an Al2O3-SiC-C iron runner self-flowing castable is prepared by usingthe OP emulsifying agent, the water adding amount in an iron runner material is obviously reduced, the compactness of the iron runner material is improved, molten slag erosion resistance of the ironrunner material is enhanced, the purpose of prolonging the service life of the iron runner material is achieved, and the primary iron influx of a blast furnace is increased.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to an erosion-resistant self-flowing castable for blast furnace iron trough and a preparation method thereof. Background technique [0002] Al is usually used in the blast furnace taphole 2 o 3 -SiC-C amorphous refractory material, the erosion of slag on iron channel material is one of the main factors affecting the service life of the material, and the erosion rate of slag is directly proportional to the porosity of the material. [0003] During the use of the iron trench material, it needs to be mixed with water and poured on site. Because the amount of water added will lead to large porosity of the material and the material will not be dense, which will further increase the erosion of slag, and destroy the overall structure of the iron trench, shortening the life of the iron trench material. The service life causes a large consumption of iron refractory per ton, wh...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3217C04B2235/3418C04B2235/3821C04B2235/3826C04B2235/402C04B2235/447C04B2235/5208
Inventor 赵金秋邓乐锐刘贯重章荣会
Owner 北京联合荣大工程材料股份有限公司
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