Sulphuric acid leaching of mechanically activated copper sulphidic concentrate

被引：24
作者：
Vafaeian, S. [1 ]
Ahmadian, M. [1 ]
Rezaei, B. [2 ]
机构：
[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran
[2] Isfahan Univ Technol, Dept Chem, Esfahan 8415683111, Iran
来源：
MINERALS ENGINEERING | 2011年 / 24卷 / 15期
关键词：
Sulphuric acid; Mechanical activation; Leaching; Copper sulphidic concentrate; CHALCOPYRITE; DISSOLUTION; HYDROMETALLURGY; MINERALS;
D O I：
10.1016/j.mineng.2011.09.010
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this study, the effect of mechanical activation was evaluated on the leaching efficiency of copper sulphidic concentrate in 0.5 M sulphuric acid medium. The mechanical activation of samples was performed by a high energy planetary ball mill under the atmospheric conditions. The results showed that there was an optimum time of MA, about 6 h, in which the leaching efficiency reaches its maximum value (42% for 7 h of leaching). The improvement of leaching efficiency due to mechanical activation can be attributed to the significant decrease of the size of particles and the intense structural disordering of particles. (C) 2011 Published by Elsevier Ltd.
引用
收藏
页码：1713 / 1716
页数：4
相关论文
共 18 条
  • [1] Influence of mechanical activation on selectivity of acid leaching of arsenopyrite
    Achimovicová, M
    Baláz, P
    [J]. HYDROMETALLURGY, 2005, 77 (1-2) : 3 - 7
  • [2] Development of a mathematical expression for the variation of amorphization phenomenon during intensive milling of minerals
    Bafghi, M. Sh.
    Emami, A. H.
    Khaki, J. Vahdati
    Zakeri, A.
    [J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2009, 93 (02) : 149 - 154
  • [3] Leaching of antimony and mercury from mechanically activated tetrahedrite Cu12Sb4S13
    Balaz, P
    Achimovicova, M
    Ficeriova, J
    Kammel, R
    Sepelak, V
    [J]. HYDROMETALLURGY, 1998, 47 (2-3) : 297 - 307
  • [4] Mechanochemistry in hydrometallurgy of sulphide minerals
    Baláz, P
    Alácová, A
    Achimovicová, M
    Ficeriová, J
    Godocíková, E
    [J]. HYDROMETALLURGY, 2005, 77 (1-2) : 9 - 17
  • [5] Mechanical activation in hydrometallurgy
    Baláz, P
    [J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2003, 72 (1-4) : 341 - 354
  • [6] Leaching and dissolution of a pentlandite concentrate pretreated by mechanical activation
    Baláz, P
    Boldizárová, E
    Achimovicová, M
    Kammel, R
    [J]. HYDROMETALLURGY, 2000, 57 (01) : 85 - 96
  • [7] Balaz P., 2000, EXTRACTIVE METALLURG
  • [8] Leaching of chalcopyrite with ferric ion.: Part I:: General aspects
    Cordoba, E. M.
    Munoz, J. A.
    Blazquez, M. L.
    Gonzalez, F.
    Ballester, A.
    [J]. HYDROMETALLURGY, 2008, 93 (3-4) : 81 - 87
  • [9] Copper Leaching from Nanoparticles of Chalcopyrite Concentrate
    Kamali, Ali Reza
    Khaki, Jalil Vahdati
    [J]. RUSSIAN JOURNAL OF NON-FERROUS METALS, 2008, 49 (03) : 138 - 143
  • [10] A critical review of the surface chemistry of acidic ferric sulphate dissolution of chalcopyrite with regards to hindered dissolution
    Klauber, C.
    [J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2008, 86 (1-4) : 1 - 17
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