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CaO-SiO_2-Al_2O_3-FeO熔渣起泡行为的研究

黄宗泽 , 肖兴国 , 肖泽强

金属学报

在1500℃下,用X射线透视装置研究了CaO-SiO_2-Al_2O_3-FeO熔渣被石墨还原过程中渣的起泡行为,测定了熔渣的起泡指数和起泡率等参数.结果表明,随熔渣碱度上升,其起泡率增大而起泡指数却下降.同时考察了MgO,CaF_2,Na_2O等添加物对熔渣起泡行为的影响.通过对熔渣起泡指数的因次分析得到,熔渣起泡指数与熔渣粘度,密度,表面张力及重力加速度g有如下关系:

关键词: CaO-SiO_2-Al_2O_3-FeO熔渣 , foaming index , dimensional analysis , smelting reduction

THE STUDY ON SMELETING REDUCTION OF CHROMIUM & NICKEL CONCETRATE WITH PLASMA

T.Wang 1) , T.H.Luo 1) , X.N.Zeng 1) , Q.Sha 1) , Z.H.Xiao 1) and C.S.Xu 2) 1) Wuhan University of Science & Technology , Wuhan 430081 , China 2) Chongqing University , Chongqing 400044 , China M

金属学报(英文版)

When smelting reduction of chromium and nickel concentrate with C Si Al as compound reductive is conducted in a plasma induction furnace, the alloying target value of 18%Cr and 9%Ni could be achieved in 20 minutes, the recovery rate of Cr and Ni would reach 82 85% and 95 98% respectively. Content of C could be limited within 0.3%. This paper also analysis the properties of electrochemical reaction between slag and molten metal.

关键词: plasma , null , null , null

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