Tundish seating brick containing reclaimed material and preparation method of tundish seating brick

A technology for cladding bricks and recycled materials, applied in the field of refractory materials, can solve the problem of high cost of aluminum-magnesium-carbon bricks, and achieve the effects of preventing low refractoriness and improving strength and anti-scour performance.

Active Publication Date: 2022-05-27
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

[0004] The object of the present invention is to provide a tundish seat brick containing recycled materials and its preparation method, through the design of the tundish seat brick containing recycled materials to solve the current The technical problem of high cost of alumina-magnesia-carbon bricks in existing technologies

Method used

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preparation example Construction

[0034] The present invention also provides a kind of preparation method based on the tundish block brick containing regenerated material as described in any one of the above, comprising the steps:

[0035] S1) obtain recycled tundish cover waste;

[0036] S2) according to the parts by weight, the regenerating capping waste, high alumina bauxite, liquid resin, graphite, quartz powder, silicon micropowder and kyanite are mixed, and after passing the inspection, discharging;

[0037] S3) put the qualified discharge material into the mold, press molding, and obtain the tundish block blank;

[0038] S4) heat-treating the tundish seat brick embryo to obtain a tundish seat brick.

[0039] For the tundish seat bricks containing regenerated materials obtained by the present invention, the content of alumina in the cladding wastes in the regeneration is greater than 70% through the selection of the centering and capping wastes. Reasonable addition of powder, silicon micropowder and ky...

Embodiment 1

[0047] Preparation of tundish block (sample 1): The preparation steps include:

[0048] 101) first clean up the steel slag and scrap steel on the surface of the used tundish cover waste to obtain large pieces of tundish cover waste; then crush the tundish cover waste to the required particle size, and perform iron removal treatment at the same time to obtain a regeneration medium. Covering waste; among them, the covering waste in regeneration includes 20 pieces of waste in regeneration with a particle size of 3-5mm, 22 pieces of waste in regeneration with a particle size of 1-3mm, and 21 pieces of waste in regeneration with a particle size of 0-1mm , the particle size is 200 meshes in 10 parts of cladding waste in regeneration; the content of alumina in the cladding waste in regeneration is more than 70%;

[0049] 102) 20 parts of 3-5mm regenerated cover waste, 22 parts of 1-3mm regenerated cover waste, and 21 parts of 0-1mm regenerated cover waste, mixed for 1 minute, added 3...

Embodiment 2

[0060] Preparation of tundish block (sample 2): The preparation steps include:

[0061] 201) first clean up the steel slag and scrap steel on the surface of the used tundish cover waste to obtain large pieces of tundish cover waste; then crush the tundish cover waste to a required particle size, and perform iron removal treatment at the same time to obtain a regenerated medium. Covering waste; among them, the cover waste in regeneration includes 22 pieces of cover waste in regeneration with a particle size of 3-5mm, 21 pieces of cover waste in regeneration with a particle size of 1-3mm, and 17 pieces of cover waste in regeneration with a particle size of 0-1mm 2. The particle size is 14 parts of 200-mesh regeneration covering waste; the content of alumina in the regeneration covering waste is more than 70%;

[0062] 202) 22 parts of 3-5mm regenerated cap waste, 21 parts of 1-3mm regenerated cap waste, and 17 parts of 0-1mm regenerated cap waste, mix for 1 minute, add 3.5 parts...

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Abstract

The invention relates to a tundish seating brick containing reclaimed materials and a preparation method of the tundish seating brick. The refractory material comprises the following components in parts by weight: 60-85 parts of regenerated tundish cover waste, 10-30 parts of high bauxite, 2.5-4 parts of liquid resin, 3-6 parts of graphite, 0.5-3 parts of quartz powder, 0.5-2 parts of silica powder and 0.5-2 parts of kyanite. The content of aluminum oxide in the regenerated tundish cover waste is greater than 70%; through the design of the tundish seating brick containing the reclaimed materials, the technical problem that in the prior art, the cost of an aluminum-magnesia carbon brick is high is solved.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a tundish block brick containing recycled materials and a preparation method thereof. Background technique [0002] The traditional tundish block bricks are mostly made of recycled aluminum-magnesium-carbon bricks as raw materials, and the products have high refractoriness and excellent high-temperature erosion resistance. However, as the scope of application of recycled aluminum-magnesium-carbon bricks increases, there are problems such as waste of resources and high cost when applying them to tundish bricks. A few manufacturers will add some olive sand to the tundish brick, but when the tundish brick with olive sand is used in a long-life tundish, because it is in contact with molten steel for a long time, and this type of steel generally has a high manganese content, Therefore, the erosion and erosion of the seat bricks are aggravated, and the service life is lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B33/13C04B33/132B22D41/02B22D41/50
CPCC04B35/66C04B33/1324C04B33/1305C04B33/131B22D41/50B22D41/02C04B2235/3217C04B2235/425C04B2235/3418C04B2235/3463C04B2235/96C04B2235/9607Y02P40/60
Inventor 胡玲军周轲赵伟颜浩于九利徐双付朝阳崔志强任林刘靖轩
Owner 北京利尔高温材料股份有限公司
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