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Preparation method for regenerated fire-resisting material for continuous casting

A refractory material and continuous casting technology, applied in the field of refractory materials, can solve the problems of high economic cost and difficulty in wide-scale promotion and use, and achieve the effect of increasing service life and meeting the requirements of service performance

Inactive Publication Date: 2016-02-03
牛誉博
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Problems solved by technology

However, due to the high economic cost of this technology, it is difficult to promote and use it on a large scale.

Method used

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Embodiment Construction

[0011] The carbon-containing waste bricks used for steelmaking are recycled and operated according to the following process steps.

[0012] Sorted stacking: After dismantling the cans at the ironmaking and steelmaking sites, they are sorted and stacked according to magnesium-carbon, aluminum-magnesium-carbon, and aluminum-silicon carbide-carbon bricks.

[0013] Sorting and removing impurities: Use a special hammer to remove soil, slag, and iron pieces on the surface of waste bricks, knock off the metamorphic layer, and stack them neatly in the pretreatment area as required.

[0014] Pulverization: Put it in an acid-resistant container, spray it evenly with a weak acidic aqueous solution, let it stand for no less than 4 hours, and pass it into 100-110°C steam for no less than 3 hours.

[0015] Drying: Load the treated waste bricks into the kiln car, enter the tunnel drying kiln, and dry at 120°C for 24 hours.

[0016] Dehydration treatment: high temperature drying treatment at...

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Abstract

The invention relates to a preparation method for a regenerated fire-resisting material for continuous casting, and belongs to the technical field of fire-resisting materials. The preparation method comprises the following process steps: classified stacking, sorting for purification, pretreatment, pulverization, dehydration treatment, screening, packaging and forming. Regenerated particles can be used for production of regenerated magnesia carbon, alumina-magnesia-carbon, aluminum-silicon carbide bricks, tundish dry materials, alumina-magnesia-carbon fire clay and slag ladle unburned bricks. According to the preparation method, the recycling rate of carbonous crushed bricks can reach up to 100%, resource consumption is reduced, garbage is cleaned, and environment protection is realized.

Description

technical field [0001] The invention relates to a preparation method of a recycled refractory material for continuous casting, and belongs to the technical field of refractory materials. Background technique [0002] The iron and steel industry is a large consumer of refractory materials. According to reports, in 2004, the consumption of refractory materials in national iron and steel enterprises was about 9 million tons, and the used refractory materials were more than 4 million tons. Refractory materials play a decisive role in the quality of steel in the steel production process. In the case of ensuring the quality and quality requirements of steel, in order to ensure the stability of the production process, low cost and green environmental protection of refractory materials are very important. Waste refractories are wastes that are dismantled after being used as kiln lining materials in metallurgical glass cement ceramics and chemical industries. At present, the main m...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 牛誉博
Owner 牛誉博
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