A kind of processing technology of waste magnesia-carbon brick regenerated particles

A technology for the regeneration and treatment of magnesia-carbon bricks, which is applied in the field of refractory material treatment, can solve the problems of unsatisfactory removal of impurities from waste magnesia-carbon bricks, and achieve the effects of low iron content, reduced production costs, and convenient operation

Active Publication Date: 2022-03-22
巩义市大润昌耐火材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of unsatisfactory removal of impurities on waste magnesia-carbon bricks in the prior art, the present invention provides a treatment process for regenerated granules of waste magnesia-carbon bricks

Method used

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  • A kind of processing technology of waste magnesia-carbon brick regenerated particles

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A treatment process for recycled particles of waste magnesia-carbon bricks, specifically as follows: First, manually classify waste magnesia-carbon bricks used in metallurgical furnaces such as ladles or converters according to different materials: magnesia-carbon, aluminum-carbon, aluminum-magnesium-carbon and aluminum-carbonized Magnesia bricks, of which magnesia-carbon and aluminum-magnesia-carbon are collectively referred to as magnesia bricks; then manually hammer and braze the magnesia bricks one by one to remove iron smelting slag iron, metamorphic layer, oxidized loose layer and sundries on the surface Adhesion layer, this step is rough treatment of magnesia bricks; the rough treatment of magnesia bricks is processed and crushed by jaw crusher (PE-400 / 600 type), and then sent to double roll crusher (2PG0640 type) for processing , the crushing particle size is required to be 0-10mm. The crushed magnesia brick particles are passed through a vibrating screen, and th...

Embodiment 2

[0028] A treatment process for recycled particles of waste magnesia-carbon bricks, specifically as follows: First, manually classify waste magnesia-carbon bricks used in metallurgical furnaces such as ladles or converters according to different materials: magnesia-carbon, aluminum-carbon, aluminum-magnesium-carbon and aluminum-carbonized Magnesia bricks, of which magnesia-carbon and aluminum-magnesia-carbon are magnesia bricks; then manually hammer and braze the magnesia bricks one by one to remove iron smelting slag iron, metamorphic layer, oxidized loose layer and sundries on the surface Layer, this step is rough treatment of magnesia bricks; the rough treatment of magnesia bricks is processed and crushed by jaw crusher (PE-400 / 600 type), and then sent to twin-roller crusher (2PG0640 type) for processing. The crushing particle size is required to be 0-10mm. After the crushed magnesia brick particles pass through the vibrating screen, the particles larger than 10mm are sieved ...

Embodiment 3

[0030] This example is a comparative example. Its raw materials and steps are roughly the same as those in Example 2, and the similarities will not be repeated. The difference is that the particles after iron removal are placed in the storage bin for atomization. The liquid is clear water, and it is advisable for the atomization to wet all the particles, trap for 48 hours, and then undergo the same roasting, rolling, screening and iron removal to obtain regenerated particles.

[0031] The regenerated particles of waste magnesia-carbon bricks prepared in this example were tested, and the result was: the particles of the metamorphic layer of particles processed in this example were not fully removed, and the iron content was 1.2, which was lower than that of Example 1 and Example 2. , did not meet the predetermined requirements.

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Abstract

The invention belongs to the technical field of refractory material treatment methods, and in particular relates to a treatment process for regenerated granules of waste magnesia-carbon bricks. The method includes the following steps: dividing waste magnesia-carbon bricks into magnesia-carbon, aluminum-carbon, aluminum-magnesium-carbon and aluminum-magnesium-carbon bricks and magnesia according to materials, wherein magnesia-carbon and aluminum-magnesia-carbon are collectively referred to as magnesia bricks; Coarse treatment of bricks; coarse crushing, fine crushing and screening of treated magnesia bricks; iron removal of magnesia brick particles; hydrogen peroxide atomization of magnesia brick particles first, and then polymerization and chlorination Atomization of molten aluminum; roasting of the atomized particles; rolling, screening, secondary iron removal of the roasted particles, and reuse as raw materials for regeneration of magnesia carbon bricks. The effect of the regenerated granules prepared by the invention is basically the same as that of products produced with brand-new magnesia, and the operation is convenient, which solves the technical problem of recycling waste magnesia-carbon bricks, not only can reduce the production cost of magnesia-carbon bricks, but also can reduce solid waste emissions.

Description

technical field [0001] The invention belongs to the technical field of refractory material treatment methods, and in particular relates to a treatment process for regenerated granules of waste magnesia-carbon bricks. Background technique [0002] my country is a big steel country in the world, and the steel industry is also a big consumer of refractory materials. Over the years, my country's refractory resources have been seriously wasted, especially many very high-quality refractory materials, which could have been recycled and reused, but due to the lack of technology, a large number of used Most refractory materials are disposed of as garbage, which not only pollutes the environment, but also wastes precious resources. In recent years, my country's refractory resources have been depleted day by day, and the price of raw materials has soared, which has aroused attention and a sense of crisis, and the research and application of waste refractory materials have begun. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/622C04B35/66C04B35/626C04B35/043
CPCC04B35/62204C04B35/66C04B35/62605C04B35/043C04B2235/5427C04B2235/428
Inventor 付学宽唐万云曹洪举蔡英哲刘武昌张世君
Owner 巩义市大润昌耐火材料有限公司
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