发明公开
EP0508166A2 Direct reduction process and apparatus
失效
Verfahren und Vorrichtung zur Direktreduktion。
- 专利标题: Direct reduction process and apparatus
- 专利标题(中): Verfahren und Vorrichtung zur Direktreduktion。
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申请号: EP92104620.7申请日: 1992-03-17
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公开(公告)号: EP0508166A2公开(公告)日: 1992-10-14
- 发明人: Kotraba, Norman Louis , Holley, Carl Albert
- 申请人: ZIA METALLURGICAL PROCESSES, INC.
- 申请人地址: 5344 Alpha Road Dallas, Texas 75240 US
- 专利权人: ZIA METALLURGICAL PROCESSES, INC.
- 当前专利权人: ZIA METALLURGICAL PROCESSES, INC.
- 当前专利权人地址: 5344 Alpha Road Dallas, Texas 75240 US
- 代理机构: Schoppe, Fritz, Dipl.-Ing.
- 优先权: US684622 19910412
- 主分类号: C21B13/08
- IPC分类号: C21B13/08 ; C21B13/10 ; C22B7/02 ; C22B7/04 ; C22B1/24
摘要:
The invented pellet reclamation process includes forming green pellets of a mixture of steel furnace dust, a carbonaceous material such as coal, charcoal, lignite, petroleum coke, or coke, and an organic binder. The green pellets are fed over a layer of burnt pellets on a rotary hearth furnace which successively conveys the pellets first through a drying and coking zone in which the pellets are dried and any volatile matter driven out of the carbonaceous material. The pellets then travel through a reduction zone where the pellets are subjected to a higher temperature at which the contained iron oxide is reduced and remains within the pellets and the zinc, lead and cadmium oxides are reduced, volatilized, re-oxidized and carried off as oxides in the waste gases. The reduced pellets (DRI) are ultimately carried into a discharge zone where they are discharged from the rotary hearth furnace. An apparatus for performing the process is also disclosed.
公开/授权文献
- EP0508166B1 Direct reduction process and apparatus 公开/授权日:2003-08-27
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