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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

MORPHOLOGY OF AMORPHOUS SILICA DURING ALUMINUM REACTIVE PENETRATION

Z. Zhou , Q.S. Gan and P.D. Ding College of Materials Science and Engineering , Chongqing University , Chongqing 400044 , China

金属学报(英文版)

The reduction of the volumes of the silica glass during aluminum reactive penetration was observed experimentally. The liquid aluminum infiltrates easily into the cavities while the released silicon solves in the liquid aluminum, and Al/A1_2 O_3 composites could be obtained finally. The experimental result has shown that Al/A1_2 O_3 composites could transform into A1_2O_3 grains by oxygen in the cavities of Al/A1_2O_3 composites during longer penetration treatment. The formation of alumina is a sintering process, in which liquid aluminum, particulate alumina and oxygen play an important role. Tin nsformed process has shown that there is a relationship of σAl_2O_3

关键词: aluminum , null , null , null , null

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