Reactor and column leaching studies for extraction of copper from two low grade resources: A comparative study

被引:11
作者
Panda, Sandeep [1 ]
Mishra, Geetanjali [1 ]
Sarangi, Chinmaya Kumar [1 ]
Sanjay, Kali [1 ]
Subbaiah, Tondepu [1 ,2 ]
Das, Subir Kumar [1 ]
Sarangi, Kadambini [1 ]
Ghosh, Malay Kumar [1 ]
Pradhan, Nilotpala [1 ]
Mishra, Barada Kanta [1 ]
机构
[1] CSIR, Inst Minerals & Mat Technol, Bhubaneswar 751013, Orissa, India
[2] KL Univ, Guntur 522502, Andhra Pradesh, India
关键词
Copper sulphide ore; Mineralogy; Reactor leaching; Column leaching; BALL MILL SPILLAGE; DISSOLUTION KINETICS; CHALCOPYRITE; RECOVERY; MALACHITE; MINERALS; IRON; ORES;
D O I
10.1016/j.hydromet.2015.10.005
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Two ore samples, one obtained from a partially leached heap with suspended operations for about four years and the other through sonic drilling of a discarded dump were tested for the amenability/feasibility of copper extraction through reactor and column leaching. Mineralogical analysis of the samples indicated the dominant sulphide minerals to be chalcopyrite and pyrite. Various process parameters such as the effect of acid concentration, time, oxidant, pulverization and temperature were studied for the reactor leaching experiments. A maximum of 91% Cu extraction can be achieved while leaching the pulverized sonic drilled sample at 90 degrees C for 3 h. On the other hand, column leaching studies at 1 kg scale showed 65-70% Cu extraction with an acid concentration of 2.7% (v/v) for both the samples. Sequential leaching of the chemically leached residues of both sonic drilled and heap leached pad sample yielded additional 13.2% and 22.2% Cu, respectively in 20 days of bacterial leaching using a mixed culture of meso-acidophilic bacterial consortium. Column leaching studies showed that the heap leached pad sample was more amenable to leaching than the sonic drilled one. Further, during the downstream processing of the leach liquors, the solvent extraction efficiency was about 95% and the Cu metal deposited by electrowinning was of 99.9% purity. A tentative process flowsheet for the recovery of copper was also prepared. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:111 / 117
页数:7
相关论文
共 19 条
  • [1] Recovery of Copper from a Waste Heat Boiler Dust Leach Liquor using LIX 84I and LIX 622N
    Barik, G.
    Nathsarma, K. C.
    Sarangi, K.
    [J]. SOLVENT EXTRACTION AND ION EXCHANGE, 2013, 31 (02) : 198 - 209
  • [2] Dissolution kinetics of malachite in ammonia/ammonium carbonate leaching
    Bingöl, D
    Canbazoglu, M
    Aydogan, S
    [J]. HYDROMETALLURGY, 2005, 76 (1-2) : 55 - 62
  • [3] Dissolution kinetics of malachite in sulphuric acid
    Bingöl, D
    Canbazoglu, M
    [J]. HYDROMETALLURGY, 2004, 72 (1-2) : 159 - 165
  • [4] Present and future commercial applications of biohydrometallurgy
    Brierley, JA
    Brierley, CL
    [J]. HYDROMETALLURGY, 2001, 59 (2-3) : 233 - 239
  • [5] Production of copper cathode from oxidized copper ores by acidic leaching and two-step precipitation followed by electrowinning
    Haghighi, Hossein Kamran
    Moradkhani, Davood
    Sedaghat, Behzad
    Najafabadi, Majid Rajaie
    Behnamfard, Ali
    [J]. HYDROMETALLURGY, 2013, 133 : 111 - 117
  • [6] Geochemistry of waste rock at dumping area
    Nugraha, Candra
    Shimada, Hideki
    Sasaoka, Takashi
    Ichinose, Masatomo
    matsui, Kikuo
    Manege, Imanuel
    [J]. INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT, 2009, 23 (02) : 132 - 143
  • [7] On the optimization of heap leaching
    Padilla, Gonzalo A.
    Cisternas, Luis A.
    Cueto, Jessica Y.
    [J]. MINERALS ENGINEERING, 2008, 21 (09) : 673 - 678
  • [8] Two step meso-acidophilic bioleaching of chalcopyrite containing ball mill spillage and removal of the surface passivation layer
    Panda, S.
    Parhi, P. K.
    Nayak, B. D.
    Pradhan, N.
    Mohapatra, U. B.
    Sukla, L. B.
    [J]. BIORESOURCE TECHNOLOGY, 2013, 130 : 332 - 338
  • [9] Insights into heap bioleaching of low grade chalcopyrite ores - A pilot scale study
    Panda, S.
    Sanjay, K.
    Sukla, L. B.
    Pradhan, N.
    Subbaiah, T.
    Mishra, B. K.
    Prasad, M. S. R.
    Ray, S. K.
    [J]. HYDROMETALLURGY, 2012, 125 : 157 - 165
  • [10] Extraction of copper from bacterial leach liquor of a low grade chalcopyrite test heap using LIX 984N-C
    Panda, S.
    Parhi, P. K.
    Pradhan, N.
    Mohapatra, U. B.
    Sukla, L. B.
    Park, K. H.
    [J]. HYDROMETALLURGY, 2012, 121 : 116 - 119