Bio-hydrometallurgical processing of low grade chalcopyrite for the recovery of copper metal


Panda S. , Sarangi C. K. , Pradhan N., Subbaiah T., Sukla L. B. , Mishra B. K. , ...Daha Fazla

KOREAN JOURNAL OF CHEMICAL ENGINEERING, cilt.29, ss.781-785, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 29 Konu: 6
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1007/s11814-011-0254-7
  • Dergi Adı: KOREAN JOURNAL OF CHEMICAL ENGINEERING
  • Sayfa Sayıları: ss.781-785

Özet

A process flowsheet was developed to recover copper metal from the lean sulfide ore of copper available at Malanjkhand, Hindustan Copper Limited (HCL), India. Copper pregnant leach solution (PLS) obtained from bio-heap leaching of chalcopyrite containing 0.3% copper was purified through solvent extraction (SX) and the copper recovered by electrowinning (EW). The copper-free raffinate obtained from SX stripping unit was returned back to the bioleaching circuit. The purity of the electrolytic copper produced at pilot scale was found to be 99.96%. During electrowinning, the effect of flow rate of electrolyte on current efficiency and energy consumption was also studied.