Sintering preparation for porous ceramic employing EAF dust

An electric arc furnace and dust collection technology, which is applied in the field of resource utilization and environmental protection, can solve the problems of difficulty in banning solid clay bricks, destruction, occupation of cultivated land, etc., and achieve the effect of good water retention and water absorption
CN1546430AInactive Publication Date: 2004-11-17孙文郁 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
孙文郁
Publication Date
2004-11-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a non-toxic porous ceramics whose preparation process comprises the steps of, mixing waste produced by the electric arc furnace during steel making process with disintegrated ball ground coal gangue powder as raw material, charging right amount of water into pelleting machine to make granulated particles, or forming block-shape through building block forming machine, subjecting the toxic metallic oxide and the carbon element in the coal gangue to reduction-oxidation reaction by high-sintering, collection high purity zinc oxide raw material, sintering for sterilization to substitute natural stone as artificial bone material.
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Description

【Technical field】

[0001] The present invention relates to the recycling and environmental protection technology of detoxification and reuse of metallurgical harmful industrial waste, especially the technology of preparing porous ceramics from the E.A.F dust collection dust produced by the electric arc furnace in the steelmaking process. 【Background technique】

[0002] 1. E.A.F dust collector:

[0003] At present, the electric arc furnaces of major steelmaking plants at home and abroad simultaneously produce a large amount of (30,000 tons / month E.A.F dust collection ash in the process of steelmaking, which contains a small amount of toxic heavy metals (zinc oxide (ZnO) 15.0% ~ 25.0%, lead oxide (PbO) 1.0% ~ 2.0%, cadmium oxide (CdO) 0.01%), and it is identified as hazardous industrial waste, which must be recycled and processed by major steelmaking plants according to regulations. In the past, these E.A.F Dust collected can only be treated as hazardous industrial waste, and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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