Regeneration method of steelmaking carbonic crushed brick

A technology of carbon waste bricks and magnesia carbon, which is applied in the field of recycling carbon-containing waste bricks for steelmaking, can solve the problems of wasting resources, polluting the environment, and low utilization rate of waste bricks, and achieves cleaning up garbage, saving mineral resources, and protecting the environment Effect

Inactive Publication Date: 2011-02-02
HUNAN XIANGGANG RUITAI TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the main methods of utilizing carbon-containing waste bricks mainly include combustion methods, etc. For example, Chinese patent CN200510018029.3 discloses a "recycling method for waste magnesia-carbon bricks". This method removes graphite and only uses particles, and the utilization rate of waste bricks is low. , high cost, and pollute the environment
In addition, there are also non-fired methods. For example, Chinese patent CN200810140933.5 discloses a "method for producing magnesia-carbon bricks using waste magnesia-carbon bricks as the main raw material", but its utilization rate is only 80%, which wastes resources and increases costs.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0015] To recycle waste carbon-containing bricks for steelmaking, follow the steps below:

[0016] (1) 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;

[0017] (2) Sorting and removing impurities: Use a special hammer to remove the soil, slag, and iron pieces on the surface of the waste bricks, knock off the metamorphic layer, and stack them neatly in the pretreatment area as required;

[0018] (3) Pretreatment: Spray pretreatment agent on the selected waste bricks and store them for more than 3 weeks to remove easily foaming substances such as aluminum carbide;

[0019] (4) Drying: load the processed waste bricks into kiln cars, enter the tunnel drying kiln, and dry at 120°C for 24 hours;

[0020] (5) Crushing: The dried carbon-containing waste bricks are crushed, and the advanced jaw crusher is used for coars...

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Abstract

The invention discloses a regeneration method of steelmaking carbonic crushed bricks. The regeneration method comprises the following technical flow steps of: piling in classification; sorting; removing impurities; preprocessing; drying; crushing; screening; packing; and producing a regeneration product. Regeneration grains can be used for producing regenerated magnesia carbon bricks, aluminum-magnesium-carbon bricks, aluminum carborundum carbon bricks, tundish dry materials, aluminum-magnesium-carbon fireclay and slag-pot unfired bricks. The regeneration use rate of the carbonic crushed bricks can reach as high as 100 percent. The invention saves resources, clears garbage and protects the environment.

Description

Technical field [0001] The invention relates to a method for recycling carbon-containing waste bricks for steelmaking. Background technique [0002] With the rapid growth of iron and steel production capacity, the demand for refractory materials in iron and steel enterprises is increasing, and more and more refractory materials are scrapped. At the same time, the reserves of refractory raw materials are also decreasing. One of the major issues of development. [0003] The recycling of carbon-containing waste bricks is a magic weapon for resource regeneration and recycling, and it is an important way for refractory production enterprises to save resources and reduce costs. Carbon-containing waste bricks include magnesia-carbon, aluminum-magnesium-carbon and aluminum-silicon carbide carbon bricks, which are used in ladles, tundishes, slag pots and ladles. At present, the main methods of utilizing carbon-containing waste bricks mainly include combustion methods, etc. For exam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66B09B3/00
Inventor 姚建材陶进曾立民朱新军曾昆刘利华
Owner HUNAN XIANGGANG RUITAI TECH
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