稀土硅铁合金冶炼工艺及反应机理  

Metallurgical technologies and reaction mechanism of rare earth ferro\|silicon alloys

作　　者：张世荣[1] 涂赣峰[2] 马秀芳[1] 任存治[2] 张成祥[2] 李春材[2] 

机构地区：[1]北京有色金属研究总院,北京100088 [2]东北大学材料与冶金学院,辽宁沈阳110006

出　　处：《广东有色金属学报》2000年第2期112-116,共5页Journal of Guangdong Non-Ferrous Metals

摘　　要：综述了硅热法还原高炉渣、稀土富渣、稀土精矿及碳热法还原稀土氧化物、稀土富渣、氟碳铈精矿等生产稀土硅铁合金的工艺特点和技术进展 .指出碳热还原法较硅热法具有能耗低、稀土收率高、无工业废渣等优点 .分析了碳热还原法冶炼过程中的有关物理化学反应 。The technological characteristics and advancement for producing rare earth ferro\|silicon alloys by silicothermic method and carbonthermic method with several different materials respectively are reviewed. It is indicated that carbonthermic method has a better prospect than silicothermic method, with lower energy consumption, higher rare earth recovery and without industrial waste slag. The physical and chemical reactions in the metallurgical process of carbonthermic method are summarized and analyzed. It is showed that the key problem of carbonthermic technology is the formation of rare earth carbides.

关 键 词：稀土硅铁合金 硅热还原 碳热还原 冶炼工艺 

分 类 号：TF645[冶金工程—钢铁冶金]