Behaviour of Co and Ni during aqueous sulphur dioxide leaching of nickel smelter slag

被引:63
作者
Gbor, PK [1 ]
Ahmed, IB [1 ]
Jia, CQ [1 ]
机构
[1] Univ Toronto, Dept Chem Engn & Appl Chem, Toronto, ON M5S 3E5, Canada
关键词
Co; Ni; aqueous sulphur dioxide leaching; nickel smelter slag;
D O I
10.1016/S0304-386X(00)00090-6
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The behaviour of Co and Ni during aqueous sulphur dioxide leaching of nickel smelter slag from INCO was studied. The study is part of a major research project aimed at developing an effective means for extracting valuable metals from slag using aqueous sulphur dioxide. Leaching experiments were carried out under different conditions in a batch reactor. Maximum extractions of Co and Ni after 3 h were 77% and 35%, respectively. The rate of extraction of both metals was independent of stirring speed between 450 and 700 rpm. The shrinking core model was used to explain the behaviour of Co and Ni. Co extraction was limited by both ash layer diffusion and surface chemical reaction, whereas Ni extraction was limited only by ash layer diffusion. Scanning electron microscopy-energy dispersive spectroscopy analysis showed that die slag becomes porous after leaching and follows the shrinking core-form of dissolution. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:13 / 22
页数:10
相关论文
共 22 条
  • [1] Metal recovery from copper converter slag by roasting with ferric sulphate
    Altundogan, HS
    Tumen, F
    [J]. HYDROMETALLURGY, 1997, 44 (1-2) : 261 - 267
  • [2] REDUCTION-ROASTING AND FERRIC-CHLORIDE LEACHING OF COPPER CONVERTER SLAG FOR EXTRACTING COPPER, NICKEL AND COBALT VALUES
    ANAND, S
    DAS, RP
    JENA, PK
    [J]. HYDROMETALLURGY, 1981, 7 (03) : 243 - 252
  • [3] RECOVERY OF METAL VALUES FROM COPPER CONVERTER AND SMELTER SLAGS BY FERRIC-CHLORIDE LEACHING
    ANAND, S
    RAO, PK
    JENA, PK
    [J]. HYDROMETALLURGY, 1980, 5 (04) : 355 - 365
  • [4] ANAND S, 1983, HYDROMETALLURGY, V10, P303
  • [5] Characterization of smelter slags
    Gbor, PK
    Mokri, V
    Jia, CQ
    [J]. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, 2000, 35 (02): : 147 - 167
  • [6] GEORGIOU D, 1995, THESIS U TORONTO CAN, P85
  • [7] Jeffery G.H., 1989, VOGELS TXB QUANTITAT
  • [8] Studies on the kinetics of slurry chlorination of a sphalerite concentrate by chlorine gas
    Jena, PK
    Barbosa, O
    Vasconcelos, IC
    [J]. HYDROMETALLURGY, 1999, 52 (02) : 111 - 122
  • [9] Behavior of metals in discard nickel smelter slag upon reacting with sulfuric acid
    Jia, CQ
    Xiao, JZ
    Orr, RG
    [J]. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, 1999, 34 (05): : 1013 - 1034
  • [10] EXTRACTION OF METALS FROM MANGANESE NODULES OF THE INDIAN-OCEAN BY LEACHING IN AQUEOUS-SOLUTION OF SULFUR-DIOXIDE
    KANUNGO, SB
    DAS, RP
    [J]. HYDROMETALLURGY, 1988, 20 (02) : 135 - 146