发明名称 |
PROCESS OF DEZINCIFYING A MATERIAL FLOW OPERATING A PIG-IRON PRODUCTION PLANT |
摘要 |
<p>There is disclosed a process of dezincifying the flow of material at the operation of a plant for the production of pig iron including a direct reduction shaft furnace and a meltdown gasifier. The crude reducing gas drawn off the meltdown gasifier is dedusted in two steps. In the first step zinc-poor coal dust is separated in a cyclone operated at a higher temperature, which is recycled into the meltdown gasifier. In the second step, upon cooling of the gas leaving the first cyclone, solid particles enriched with zinc are separated at a lower temperature. The dezincified reducing gas is fed to the direct reduction shaft furnace and the zinc-rich substances separated off the second cyclones are processed to a zinc concentrate.</p> |
申请公布号 |
EP0316299(B1) |
申请公布日期 |
1992.07.01 |
申请号 |
EP19880890276 |
申请日期 |
1988.11.07 |
申请人 |
DEUTSCHE VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH |
发明人 |
KEPPLINGER, WERNER, DIPL.-ING, DR. |
分类号 |
C22B7/02;C21B11/02;C21B13/14;C22B19/30 |
主分类号 |
C22B7/02 |
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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