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Composite lining material and application and application method thereof

A lining and composite powder technology, applied in the field of refractory materials, can solve the problems of carbon increase, thermal shock stability and slag resistance of magnesium carbon materials, and large heat loss.

Inactive Publication Date: 2020-08-11
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

The emergence of low-carbon magnesia-carbon materials solves the problem of large heat loss of traditional magnesia-carbon materials and the increase of carbon to molten steel. However, with the reduction of carbon content, the thermal shock stability and slag resistance of magnesia-carbon materials decrease

Method used

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  • Composite lining material and application and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A composite lining material, comprising the following raw materials in parts by mass: 15 parts of components in magnesia whose particle size is less than or equal to 0.074 mm, 15 parts of components whose particle size is greater than 0.074 mm and less than or equal to 1 mm, and whose particle size is greater than 1 mm and 32 parts of components less than or equal to 3mm, 25 parts of components with a particle size greater than 3mm and less than or equal to 5mm, 4 parts of flake graphite, 2.8 parts of liquid phenolic resin, 2 parts of carbon-containing resin, 1.5 parts of high-temperature pitch, Al 2 o 3-ZrO 2 5 parts of composite powder, 0.5 parts of boron carbide.

Embodiment 2

[0044] A composite lining material, comprising the following raw materials in parts by mass: 14.8 parts of components in magnesia whose particle size is less than or equal to 0.074 mm, 15 parts of components whose particle size is greater than 0.074 mm and less than or equal to 1 mm, and whose particle size is greater than 1 mm and 32 parts of components less than or equal to 3mm, 25 parts of components with a particle size greater than 3mm and less than or equal to 5mm, 4 parts of flake graphite, 2.5 parts of liquid phenolic resin, 2 parts of carbon-containing resin, 2 parts of high-temperature pitch, Al 2 o 3 -ZrO 2 5 parts of composite powder, 0.5 parts of boron carbide.

Embodiment 3

[0046] A composite lining material, comprising the following raw materials in parts by mass: 15.3 parts of components in magnesia whose particle size is less than or equal to 0.074 mm, 15 parts of components whose particle size is greater than 0.074 mm and less than or equal to 1 mm, and whose particle size is greater than 1 mm and 32 parts of components less than or equal to 3mm, 25 parts of components with a particle size greater than 3mm and less than or equal to 5mm, 4 parts of flake graphite, 2.8 parts of liquid phenolic resin, 2 parts of carbon-containing resin, 1.5 parts of high-temperature pitch, Al 2 o 3 -ZrO 2 5 parts of composite powder, 0.2 parts of boron carbide.

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Abstract

The invention belongs to the technical field of refractory materials, and provides a composite lining material. After Al2O3-ZrO2 composite powder is added into the composite lining material, Al2O3 reacts with MgO in the low-carbon magnesium-carbon material to generate spinel. Spinel has the advantages of good slag corrosion resistance, thermal shock resistance, high high-temperature strength and the like, and is beneficial to improving the performance of the low-carbon magnesium-carbon material. The invention also provides application of the composite lining material in preparation of a refractory material. According to the composite material, the dependence on raw materials is reduced while the comprehensive performance of the refractory product is improved, the refractory material with excellent performance can be obtained through fewer raw materials, mineral resources are saved, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a composite inner lining material and its application and application method. Background technique [0002] Magnesium-carbon materials mainly improve their thermal shock resistance stability through the addition of flake graphite. Flake graphite has the advantages of low expansion, high thermal conductivity, and no reaction with slag. The larger the amount added, the better the thermal shock resistance effect. With the rapid development of the refining process outside the furnace, more and more ultra-low carbon steels have been smelted, so the carbon content of the lining materials must be strictly controlled. The emergence of low-carbon magnesia-carbon materials solves the problem of large heat loss and carburization of molten steel in traditional magnesia-carbon materials. However, as the carbon content decreases, the thermal shock stability and slag resistance of ...

Claims

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Application Information

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IPC IPC(8): C04B35/043
CPCC04B35/013C04B35/0435C04B2235/3217C04B2235/3222C04B2235/3244C04B2235/3821C04B2235/425C04B2235/77C04B2235/96
Inventor 张晗郭钰龙任林刘靖轩刘丽颜浩赵伟高梅刘美荣
Owner 北京利尔高温材料股份有限公司
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