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Sliding plate brick added with compound aluminium oxide micropowder and carbon source and preparation method thereof

A composite alumina and sliding brick technology, which is applied in the field of refractory materials, can solve problems such as poor thermal shock stability, steel clamping, and poor corrosion resistance, and achieve the effects of improving strength, simple production process, and reducing thermal expansion coefficient

Pending Publication Date: 2018-09-04
瑞泰马钢新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of poor corrosion resistance, poor thermal shock stability, and steel clamping that often exist in traditional aluminum-zirconium-carbon sliding plates during use, the present invention provides a sliding block with composite alumina micropowder and carbon source and its preparation method According to the present invention, the sliding brick with composite alumina powder and carbon source can improve the thermal shock resistance, erosion resistance and erosion resistance of the sliding brick by changing the adjustment of the alumina powder.

Method used

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  • Sliding plate brick added with compound aluminium oxide micropowder and carbon source and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] The composition and weight percentage of the sliding brick with composite alumina powder and carbon source described in this example are: 40% tabular corundum particles, 20% fused zirconia corundum particles, 10% tabular corundum fines powder, 5% fused zirconia corundum fine powder, 10% composite alumina fine powder, 2.5% flake graphite, 2.5% carbon black, 3% metal aluminum powder, 3% metal silicon powder, 4% special Additives, 100% total; plus 5% phenolic resin.

[0032] The preparation method of the sliding brick with the addition of composite alumina micropowder and carbon source described in this embodiment comprises the following steps:

[0033] (1) Powder mixing: 10% platy corundum fine powder, 5% fused zirconia corundum fine powder, 10% composite alumina fine powder, 2.5% flake graphite, 2.5% carbon black, 3% Add metal aluminum powder, 3% metal silicon powder and 4% special additives into the mixer, and pre-mix for 40 minutes to fully mix to obtain powder;

[0...

Embodiment 2

[0043] The composition and weight percentage of the sliding brick with composite alumina powder and carbon source described in this example are: 45% tabular corundum particles, 15% fused zirconia corundum particles, 5% tabular corundum fines Powder, 10% fused zirconia corundum fine powder, 12% composite alumina fine powder, 2% flake graphite, 2% carbon black, 2.5% metal aluminum powder, 3.5% metal silicon powder, 3% special Additives, 100% total; plus 4% phenolic resin.

[0044] The preparation method of the sliding brick with the addition of composite alumina micropowder and carbon source described in this embodiment comprises the following steps:

[0045] (1) Powder mixing: 5% tabular corundum fine powder, 15% fused zirconia corundum fine powder, 12% composite alumina fine powder, 2% flake graphite, 2% carbon black, 2.5% Add metal aluminum powder, 3.5% metal silicon powder and 1% special additives into the mixer, and pre-mix for 45 minutes to fully mix to obtain powder;

...

Embodiment 3

[0055] The sliding brick with composite alumina powder and carbon source described in this embodiment has a raw material composition and weight percentage as follows: 50% tabular corundum particles, 10% fused zirconia corundum particles, 7% tabular corundum fines powder, 8% fused zirconia corundum fine powder, 12% composite alumina fine powder, 3% flake graphite, 2% carbon black, 1% metal aluminum powder, 5% metal silicon powder, 2% special Additives, a total of 100%; plus 4 to 6% of phenolic resin.

[0056] The preparation method of the sliding brick with the addition of composite alumina micropowder and carbon source described in this embodiment comprises the following steps:

[0057] (1) Powder mixing: 7% tabular corundum fine powder, 8% fused zirconia corundum fine powder, 12% composite alumina fine powder, 3% flake graphite, 2% carbon black, 1% Add metal aluminum powder, 5% metal silicon powder and 2% special additives into the mixer, and pre-mix for 50 minutes to fully ...

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Abstract

The invention discloses a sliding plate brick added with compound aluminium oxide micropowder and a carbon source and a preparation method thereof and relates to the technical field of refractory materials. The sliding plate brick is prepared from the following raw materials and components in percentage by weight: 40-50% of platy corundum granule, 10-20% of fused zirconia corundum granule, 5-10% of platy corundum fine powder, 5-10% of fused zirconia corundum fine powder, 10-15% of compound aluminium oxide micropowder, 0.5-3% of flake graphite, 0.5-3% of carbon black, 0.5-5% of metal aluminiumpowder, 0.5-5% of metal silicon powder and 1-4% of special additive, and the sum of the percents is 100%; in addition, 4-6% of phenolic resin is added. The finished sliding plate brick is obtained bythe processes of crushing and mixing of raw materials, mixing and rolling, forming, heat treatment, firing, digestion and carbonization, finish processing, inspection and packaging and the like. The sliding plate brick added with the compound aluminium oxide micropowder and the carbon source has the beneficial effects that by changing for the adjustment of the aluminium oxide micropowder, the heatshock resistance, washout resistance and erosion resistance of the sliding plate brick are improved and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of refractory materials, and relates to a sliding plate for a large ladle and a converter, in particular to a sliding brick added with composite alumina micropowder and a carbon source and a preparation method thereof. Background technique [0002] Skateboard tiles have extremely strict requirements on slideboard tiles due to frequent erosion by molten steel, oxidation in a highly oxidative atmosphere, and frequent rapid cooling and rapid heating. At present, large-scale ladle slide bricks and converter gate valve slide bricks are mainly made of aluminum-zirconium-carbon materials. However, with the increasingly harsh smelting conditions and the continuous improvement of steel grade requirements, traditional aluminum-zirconium-carbon slide plates often have corrosion resistance during use. Poor thermal shock stability, steel clamping and other phenomena appear, and the number of furnaces used is not high, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/103C04B35/106
CPCC04B35/103C04B35/106C04B2235/402C04B2235/424C04B2235/425C04B2235/428C04B2235/77C04B2235/96
Inventor 彭学峰郁书中崔任渠张小红
Owner 瑞泰马钢新材料科技有限公司
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