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    • 4. 发明公开
    • 결정수 함유 산화니켈광석의 페로니켈 고로 제련 방법
    • 含有碳水化合物的镍氧化物微粉的烧结方法
    • KR1020100039907A
    • 2010-04-16
    • KR1020107006683
    • 2005-11-02
    • 리우, 쉔지
    • 리우,쉔지
    • C22B23/02C22B1/16C21B5/02
    • C22C38/002C21B3/02C21B5/008C21B5/02C22B1/16C22B1/2413C22B23/005C22B23/023C22C38/06C22C38/34C22C38/40C22C38/60
    • A smelting process of ferronickel with nickel oxide ore containing of crystal water in a blast furnace, which comprises breaking and screening the raw ore, preparing agglomerate from the breeze, mixing the agglomerate, coke, limestone/calcined lime, dolomite and fluorite, and smelting them to obtain ferronickel in the blast furnace. The weight ratios of additives to agglomerate are as follows: fluorite 0.3~20%, dolomite 0~8%, limestone/calcined lime 4~35%. The process further comprises magnetic separating the agglomerate after breaking and screening to obtain concentrate breeze, and then sintering. Compared with the prior arts, by means of the ratio of fluorite to agglomerate in the smelting process of the invention, the influence of chromium upto furnace temperature can be reduced, and the burning through accident of hearth due to excessive content of fluorine can be avoided. The magnesium in dolomite can settle the problem of poor fluidity of molten iron caused by the chromium in nickel-chromium ore. Limestone not only provides the basicity but also balances the said additives. The smelting process of the invention is low in cost, and has a high recovery rate of raw material.
    • 在高炉中含有结晶水的镍氧化物矿石的镍铁冶炼工艺,包括对原矿进行破碎和筛选,从微风中制备附聚物,混合附聚物,焦炭,石灰石/煅烧石灰,白云石和萤石,以及熔炼 他们在高炉中获得铁镍铁。 添加剂与附聚物的重量比如下:萤石0.3〜20%,白云石0〜8%,石灰石/煅烧石灰4〜35%。 该方法进一步包括在断裂和筛选之后磁性分离附聚物以获得浓缩微风,然后烧结。 与现有技术相比,通过本发明的熔融方法中的萤石与聚集体的比例,可以降低铬到炉温的影响,并且可以避免由于氟含量过多引起的炉床燃烧事故 。 白云石中的镁可以解决镍铬矿中的铬引起的铁水流动性差的问题。 石灰石不仅提供碱性,而且平衡所述添加剂。 本发明的熔炼工艺成本低,原料回收率高。