Dissolution of non-sulfide phases during the chemical and bacterial leaching of a sulfidic black schist

被引:8
作者
Bhatti, Tariq M. [1 ]
Vuorinen, Antti [2 ]
Tuovinen, Olli H. [1 ]
机构
[1] Ohio State Univ, Dept Microbiol, Columbus, OH 43210 USA
[2] Univ Helsinki, Dept Geol, FI-00014 Helsinki, Finland
关键词
Black schist; Bacterial leaching; Chemical leaching; Feldspar; Mica; SILICATE MINERAL DISSOLUTION; ORE;
D O I
10.1016/j.hydromet.2012.01.008
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The purpose of this study was to assess the solubilization of silicates during the chemical and bacterial leaching of finely ground black schist in shake flasks. The main sulfide minerals were pyrrhotite (Fe1-xS) and pyrite (FeS2) with lesser amounts of sphalerite (ZnS), pentlandite (Ni,Fe,Co)(9)O-8), violarite (FeNi2S4), and chalcopyrite (CuFeS2). Quartz, micas, and feldspars were the main Si-containing phases. Dissolution of the non-sulfidic minerals was monitored by analysis of Si, Al, Ca, Mg, and K solubilized from the black schist in 30 day leaching experiments at 22 +/- 2 degrees C. The dissolution of main constituent elements from silicate minerals was a function of the pH of the leach solution and no direct role of bacterial action on the solubilization of silicates was evident. Ferrous or ferric iron addition did not affect the concentrations of elements dissolved from silicates except for mica interlayer K+, which was incorporated into the jarosite fraction. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:32 / 35
页数:4
相关论文
共 18 条
  • [1] BACTERIAL LEACHING OF COMPLEX SULFIDE ORE SAMPLES IN BENCH-SCALE COLUMN REACTORS
    AHONEN, L
    TUOVINEN, OH
    [J]. HYDROMETALLURGY, 1995, 37 (01) : 1 - 21
  • [2] Characterization of sulfide deposits by airborne magnetic and gamma-ray responses in eastern Finland
    Airo, ML
    Loukola-Ruskeeniemi, K
    [J]. ORE GEOLOGY REVIEWS, 2004, 24 (1-2) : 67 - 84
  • [3] Weathering of Biotite in Acidithiobacillus ferrooxidans Cultures
    Bhatti, Tariq M.
    Bigham, Jerry M.
    Vuorinen, Antti
    Tuovinen, Olli H.
    [J]. GEOMICROBIOLOGY JOURNAL, 2011, 28 (02) : 130 - 134
  • [4] Weathering of phlogopite in simulated bioleaching solutions
    Bhatti, Tariq M.
    Bigham, Jerry M.
    Vuorinen, Antti
    Tuovinen, Olli H.
    [J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2011, 98 (1-2) : 30 - 34
  • [5] Altered mineralogy associated with stirred tank bioreactor leaching of a black schist ore
    Bhatti, Tariq M.
    Bigham, Jerry M.
    Riekkola-Vanhanen, Marja
    Tuovinen, Olli H.
    [J]. HYDROMETALLURGY, 2010, 100 (3-4) : 181 - 184
  • [6] BHATTI TM, 1994, ACS SYM SER, V550, P90
  • [7] Bioleaching of six nickel sulphide ores with differing mineralogies in stirred-tank reactors at 30 °C
    Cameron, Rory A.
    Lastra, Rolando
    Gould, W. Douglas
    Mortazavi, Saviz
    Thibault, Yves
    Bedard, Pierre L.
    Morin, Lucie
    Koren, David W.
    Kennedy, Kevin J.
    [J]. MINERALS ENGINEERING, 2013, 49 : 172 - 183
  • [8] Elevated-pH bioleaching of a low-grade ultramafic nickel sulphide ore in stirred-tank reactors at 5 to 45°C
    Cameron, Rory A.
    Lastra, Rolando
    Mortazavi, Saviz
    Gould, W. Douglas
    Thibault, Yves
    Bedard, Pierre L.
    Morin, Lucie
    Kennedy, Kevin J.
    [J]. HYDROMETALLURGY, 2009, 99 (1-2) : 77 - 83
  • [9] Bioleaching of a low-grade ultramafic nickel sulphide ore in stirred-tank reactors at elevated pH
    Cameron, Rory A.
    Lastra, Rolando
    Mortazavi, Saviz
    Bedard, Pierre L.
    Morin, Lucie
    Gould, W. Douglas
    Kennedy, Kevin J.
    [J]. HYDROMETALLURGY, 2009, 97 (3-4) : 213 - 220
  • [10] Silicate mineral dissolution during heap bioleaching
    Dopson, Mark
    Halinen, Anna-Kaisa
    Rahrmen, Nelli
    Bostrom, Dan
    Sundkvist, Jan-Eric
    Riekkola-Vanhanen, Marja
    Kaksonen, Anna H.
    Puhakka, Jaakko A.
    [J]. BIOTECHNOLOGY AND BIOENGINEERING, 2008, 99 (04) : 811 - 820