- 专利标题: METHOD FOR SMELTING SAPROLITE ORE
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申请号: US15552031申请日: 2015-12-01
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公开(公告)号: US20180030574A1公开(公告)日: 2018-02-01
- 发明人: Junichi Takahashi , Taku Inoue , Shuuji Okada
- 申请人: SUMITOMO METAL MINING CO., LTD.
- 优先权: JP2015-033941 20150224
- 国际申请: PCT/JP2015/083784 WO 20151201
- 主分类号: C22B23/02
- IPC分类号: C22B23/02 ; C22B1/16 ; C21B13/10 ; C22B5/10
摘要:
Provided is a smelting method whereby a reaction for reducing pellets, said pellet being formed by using a saprolite ore as a starting material, can be effectively conducted and thus an iron/nickel alloy having a nickel grade of, for example, 16% or greater can be obtained. The method comprises: a pellet production step (S1) for producing the pellets from the saprolite ore; and a reduction step (S2) for heating and reducing the obtained pellets in a smelting furnace. In the pellet production step (S1), at least the saprolite ore and a preset amount of a carbonaceous reducing agent are mixed together to produce the pellets. In the reduction step (S2), a hearth carbonaceous reducing agent is preliminarily spread on the hearth of the smelting furnace and the pellets produced above are placed on the hearth carbonaceous reducing agent and then subjected to a heat reduction treatment.
公开/授权文献
- US10301704B2 Method for smelting saprolite ore 公开/授权日:2019-05-28
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