发明公开
- 专利标题: PROCESS FOR PRODUCING MOLTEN IRON
- 专利标题(中): 用于生产铁水熔化
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申请号: EP03700590申请日: 2003-01-16
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公开(公告)号: EP1469086A4公开(公告)日: 2007-08-22
- 发明人: KOBAYASHI ISAO , MIYAHARA ITSUO , TANAKA HIDETOSHI , TOKUDA KOJI
- 申请人: KOBE STEEL LTD
- 专利权人: KOBE STEEL LTD
- 当前专利权人: KOBE STEEL LTD
- 优先权: JP2002015741 2002-01-24; JP2002290389 2002-10-02
- 主分类号: C21B13/00
- IPC分类号: C21B13/00 ; C21B13/10 ; C21B13/14
摘要:
A process for producing molten iron wherein a formed material containing iron oxide and a carbonaceous reducing agent is used as a raw material, and a rotary hearth furnace and a melting furnace are connected, characterized in that said formed material is first charged into a heating and reducing furnace, to enhance a metallization rate to 60 % or more prior to the feed to the melting furnace, and the secondary burning rate of a CO gas in said melting furnace is controlled to 40 % or less. The process allows the suppression of the loss by melting of refractories of the rotary hearth furnace and the melting furnace, in combination with the production of a molten iron having an enhanced purity of iron with good productivity.
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