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    • 5. 发明公开
    • METHOD FOR SMELTING NICKEL OXIDE ORE AND METHOD FOR CHARGING PELLETS
    • VERFAHREN ZUM SCHMELZEN VON NICKELOXIDERZ UND VERFAHREN ZUM LADEN VON PELLETS
    • EP3162906A1
    • 2017-05-03
    • EP15824974
    • 2015-06-30
    • SUMITOMO METAL MINING CO
    • TAKAHASHI JUNICHIINOUE TAKUOKADA SHUUJI
    • C22B23/02C22B5/10
    • C22B23/021C22B1/2406C22B5/02C22B5/04C22B5/10C22B23/005C22B23/02C22B23/023
    • Provided is a nickel oxide ore smelting method for forming pellets from a nickel oxide ore and performing smelting by reducing and heating the pellets in a smelting furnace, wherein it is possible to make the smelting reaction in the reduction step progress effectively while maintaining the strength of the pellets. This method for smelting a nickel oxide ore comprises: a pellet production step S1 for producing pellets from a nickel oxide ore; and a reduction step S2 for reducing and heating the obtained pellets in a smelting furnace at a predetermined reduction temperature. In the pellet production step S1, a mixture is formed by mixing materials including said nickel oxide ore without mixing a carbonaceous reducing agent, and the pellets are formed by agglomerating said mixture. In the reduction step S2, in charging the obtained pellets into the smelting furnace, a carbonaceous reducing agent is spread in advance over the furnace floor of the smelting furnace and the pellets are placed on the carbonaceous reducing agent, and the pellets are reduced and heated in a state where the pellets are covered by the carbonaceous reducing agent.
    • 本发明提供一种氧化镍矿石的冶炼方法,用于从氧化镍矿石中成型颗粒,并通过在熔炼炉中对颗粒进行还原和加热来进行熔炼,其中可以在还原步骤中有效地进行熔炼反应,同时保持 颗粒。 这种用于熔炼氧化镍矿石的方法包括:由氧化镍矿石生产颗粒的颗粒生产步骤S1; 以及还原步骤S2,用于在预定的还原温度下将得到的粒料在熔炼炉中还原和加热。 在颗粒生产工序S1中,混合含有所述氧化镍矿石的材料而不混合碳系还原剂而形成混合物,通过使所述混合物凝聚而形成颗粒。 在还原工序S2中,将得到的粒料投入到熔炼炉中时,预先在熔炼炉的炉底上铺设碳质还原剂,将粒料置于碳质还原剂上,将粒料进行还原加热 在颗粒被碳质还原剂覆盖的状态下进行。