发明名称 |
Process for the treatment of electric arc furnace dust |
摘要 |
In a process for the treatment of electric arc furnace (EAF) dust, the dust is first subjected to atmospheric leaching with a ferric chloride solution and thereafter subjected to treatment in an autoclave at an elevated temperature and pressure for conversion of low temperature stable goethite (FeO.OH) to a filterable crystalline hematite (Fe2O3) in an acidic chloride solution. Zinc is recovered from the solution by solvent extraction using a solvating extractant followed by stripping and zinc recovery by electrolysis of zinc chloride solution. Lead is separated from the solution by cooling to precipitate lead chloride.
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申请公布号 |
US5336297(A) |
申请公布日期 |
1994.08.09 |
申请号 |
US19930018032 |
申请日期 |
1993.02.16 |
申请人 |
TERRA GAIA ENVIRONMENTAL GROUP INC. |
发明人 |
MCELROY, RODERICK O. |
分类号 |
C22B3/10;C22B3/26;C22B7/02;C22B13/10;(IPC1-7):C22B3/46 |
主分类号 |
C22B3/10 |
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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