发明名称 |
METHOD OF PROCESSING FLUOROCARBON-CONTAINING WASTES OF ELECTROLYTIC ALUMINUM PRODUCTION |
摘要 |
FIELD: production of aluminum by electrolysis of molten salts; processing wastes of this process. ^ SUBSTANCE: proposed method includes delivery of solid fluorocarbon-containing wastes and oxygen-containing gas into reactor followed by high-temperature roasting for obtaining secondary raw material for production of aluminum. Finely-dispersed fluorocarbon-containing and sulfur-containing wastes are fed for roasting at weight ratio of fluorine to sulfur no less than 4:1; anode gases of electrolytic aluminum production process taken from organized gas cleaning system are used as oxygen-containing gas. Wastes are delivered in form of suspension in which liquid-to-solid ratio is maintained at 0.5-1.5:1. Proposed method improves operation of electric precipitators and ensures return of compounds in form of secondary high-quality regenerating cryolite. ^ EFFECT: reduced emissions of toxic agents into atmosphere. ^ 2 cl |
申请公布号 |
RU2247160(C1) |
申请公布日期 |
2005.02.27 |
申请号 |
RU20030133946 |
申请日期 |
2003.11.24 |
申请人 |
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发明人 |
POLJAKOV P.V.;RAGOZIN L.V.;SOKOLOV V.S.;SLAVIN V.S.;DANILOV V.V.;ISTOMIN A.S. |
分类号 |
C22B7/00;C25C3/06 |
主分类号 |
C22B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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