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    • 20. 发明公开
    • GRANULAR METAL PRODUCTION METHOD
    • VERFAHREN ZUR HERSTELLUNG EINESFEINKÖRNIGENMETALLS
    • EP2578703A1
    • 2013-04-10
    • EP11792374.8
    • 2011-06-03
    • Kabushiki Kaisha Kobe Seiko Sho
    • ITO, Shuzo
    • C21B13/10C21B11/08C22B1/16C22B1/248
    • B22F9/20C21B13/0046C21B13/105C22B1/245C22B5/10
    • The present invention is to provide a technique that further improves the process for producing granular metal by heating agglomerates containing a metal oxide and a carbonaceous reducing agent, and reducing and melting the metal oxide included in the agglomerates.
      The process for producing granular metal comprising the steps of: feeding agglomerates containing a metal oxide and a carbonaceous reducing agent onto a hearth of a moving hearth-type reduction melting furnace; heating the agglomerates to reduce and to melt the metal oxide; cooling the granular metal obtained by said heating step; and discharging the cooled granular metal out of the furnace to recover the same, wherein the agglomerates having an average diameter of not smaller than 17.5 mm are fed onto the hearth when the agglomerates are heated at a spread density of not lower than 0.5 on the hearth.
    • 本发明提供一种技术,通过加热含有金属氧化物和碳质还原剂的附聚物,还可以进一步改善生产颗粒状金属的方法,还原和熔融附聚物中所含的金属氧化物。 制造颗粒状金属的方法包括以下步骤:将含有金属氧化物和碳质还原剂的附聚物进料到移动的炉床式还原熔融炉的炉床上; 加热附聚物以减少和熔化金属氧化物; 冷却通过所述加热步骤获得的颗粒状金属; 将冷却的粒状金属从炉中排出回收炉,其中,当在炉膛上以不低于0.5的扩散密度加热附着物时,将平均直径不小于17.5mm的附聚物供给到炉床上 。