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Long-life and low-cost steel ladle bottom castable and preparation method thereof

A low-cost, bottom-casting technology, applied in the field of refractory materials, can solve the problems of large waste and fragility of alumina ceramics, and achieve the effect of improving the service life, reducing the thickness of the metamorphic layer, and saving the cost of enterprises.

Inactive Publication Date: 2020-01-17
上海新泰山高温工程材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Alumina ceramics are fragile, and a large number of waste products are often produced in actual production. The longer the time, the more waste alumina ceramics will accumulate. How to deal with it becomes a very difficult problem.

Method used

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  • Long-life and low-cost steel ladle bottom castable and preparation method thereof
  • Long-life and low-cost steel ladle bottom castable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1, the proportions by weight are: 10-20% of recycled alumina ceramics with a particle size of 15-8mm, 10-15% of recycled alumina ceramics with a particle size of 8-5mm, and recycled alumina ceramics with a particle size of 5-3mm 3-9%, 5-11% of white corundum with a particle size of 5-3mm, 10-20% of white corundum with a particle size of 3-1mm, 1-13% of white corundum with a particle size of 1-0mm, and a particle size of -200 mesh white corundum Corundum 5-13%, particle size of -325 mesh white corundum 1-5%, fused magnesia with particle size of 1-0mm 1-7%, particle size of -200 mesh fused magnesia 1-7%, particle size of 1 -0mm fused aluminum magnesium spinel 1-10%, particle size of -325 mesh pure calcium aluminate cement 1-10%, particle size of 3 microns α-alumina micropowder 2-8%, particle size of 1 micron Alpha-alumina powder 3-8%;

[0028] Step 2, adding recycled alumina ceramics with particle sizes of 15-8mm, 8-5mm, 5-3mm and white corundum with particle sizes ...

Embodiment 2

[0033] Step 1, the proportions by weight are: 10-20% of recycled alumina ceramics with a particle size of 15-8mm, 10-15% of recycled alumina ceramics with a particle size of 8-5mm, and recycled alumina ceramics with a particle size of 5-3mm 3-9%, 5-11% of white corundum with a particle size of 5-3mm, 10-20% of white corundum with a particle size of 3-1mm, 1-13% of white corundum with a particle size of 1-0mm, and a particle size of -200 mesh white corundum Corundum 5-13%, particle size of -325 mesh white corundum 1-5%, fused magnesia with particle size of 1-0mm 1-7%, particle size of -200 mesh fused magnesia 1-7%, particle size of 1 -0mm fused aluminum magnesium spinel 1-10%, particle size of -325 mesh pure calcium aluminate cement 1-10%, particle size of 3 microns α-alumina micropowder 2-8%, particle size of 1 micron Alpha-alumina powder 3-8%;

[0034] Step 2, adding recycled alumina ceramics with particle sizes of 15-8mm, 8-5mm, 5-3mm and white corundum with particle sizes ...

Embodiment 3

[0039] Step 1, according to the proportion by weight: 10-20% of recycled alumina ceramics with a particle size of 15-8mm, 10-15% of recycled alumina ceramics with a particle size of 8-5mm, and recycled alumina ceramics with a particle size of 5-3mm 3-9%, white corundum with a particle size of 5-3mm 5-11%, white corundum with a particle size of 3-1mm 10-20%, white corundum with a particle size of 1-0mm 1-13%, a particle size of -200 mesh white Corundum 5-13%, the particle size is -325 mesh white corundum 1-5%, the particle size is 1-0mm fused magnesia 1-7%, the particle size is -200 mesh fused magnesia 1-7%, the particle size is 1 -0mm fused aluminum magnesium spinel 1-10%, pure calcium aluminate cement with a particle size of -325 mesh 1-10%, α-alumina micropowder with a particle size of 3 microns 2-8%, with a particle size of 1 micron α-alumina micropowder 3-8%;

[0040] Step 2, adding recycled alumina ceramics with particle sizes of 15-8mm, 8-5mm, and 5-3mm and white corund...

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Abstract

The invention relates to the technical field of a refractory material, in particular to long-life and low-cost steel ladle bottom castable and a preparation method thereof. The long-life and low-coststeel ladle bottom castable comprises recovered aluminum oxide ceramic, white corundum, fused magnesia, fused aluminum magnesium spinel, pure calcium aluminate cement, alpha-aluminum oxide micropowder, sodium triphosphate, metal aluminum powder and organic fiber. The steel ladle bottom castable prepared from the recovered aluminum oxide ceramic, the white corundum, the fused magnesia, the fused aluminum magnesium spinel, the pure calcium aluminate cement, the alpha-aluminum oxide micropowder, the sodium triphosphate, the metal aluminum powder and the organic fiber according to a weight ratio has a service life equal to that of high-grade steel ladle bottom castable, the production cost is reduced and the ladle slag erosion and permeation resistance of the ladle bottom castable can be improved, so that the thickness of a working layer metamorphic layer of the steel ladle bottom is reduced; and meanwhile, part of waste aluminum oxide ceramic can be recovered and consumed, so that consumption of bauxite ore non-renewable resources can be reduced.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a 2D flat marble paint and a preparation method thereof. Background technique [0002] The ladle is an important equipment in the steelmaking process. In recent years, with the development of continuous casting technology and out-of-furnace refining, the ladle is not only a container for molten steel, but also a device for refining molten steel. How to improve the service life of the ladle lining material has become the focus of most people's research. With the increase of molten steel temperature, the residence time of molten steel in the ladle is prolonged, which makes the refractory lining of the ladle bear greater erosion loss, and the erosion rate of the ladle wall is seriously inconsistent with the erosion rate of the refractory at the bottom of the ladle, which reduces the service life of the ladle. Effectively improving the material of the castable for the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/77C04B2235/96C04B2235/9676
Inventor 马四凯李维锋魏振国李洪波邹新国孙佳琛
Owner 上海新泰山高温工程材料有限公司
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