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Oxidation Behavior of Copper Concentrate, Gold Concentrate, and Their Mixtures Between 1173 K (900 °C) and 1373 K (1100 °C)

  • Kyungsob Choi
  • Sookyung Kim
  • Minseuk Kim
  • Hyunsik ParkEmail author
Article
  • 14 Downloads

Abstract

Gold is typically extracted from ores using a cyanidation process. However, environmental regulations and low productivity are the main drawbacks of cyanide usage. Alternative technologies for gold extraction are being studied although development of any new technology necessitates additional investments. In South Korea, recovery of gold and silver is performed by the local copper producer by feeding gold concentrate into a smelter. An integrated copper-making process might be an efficient and feasible alternative for the extraction of precious metals without the use of toxic cyanide. Installed exhaust gas cleaning system of copper smelter would minimize the toxic effects of hazardous elements (arsenic, bismuth, antimony, etc.) contained in gold concentrates. A kinetic and thermodynamic understanding of the effects of gold concentrates on copper metallurgy is necessary for the operation. The effects of various parameters on the oxidation kinetics of sulfides were investigated.

Notes

Acknowledgments

The research was supported by the Basic Research Project (GP2017-025) of the Korea Institute of Geoscience and Mineral Resources (KIGAM), funded by the Ministry of Science, ICT and Future Planning of Korea.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2019

Authors and Affiliations

  • Kyungsob Choi
    • 1
  • Sookyung Kim
    • 2
  • Minseuk Kim
    • 2
  • Hyunsik Park
    • 2
    Email author
  1. 1.University of Science & Technology (UST), Korea Institute of Geoscience and Mineral Resources (KIGAM)DaejeonSouth Korea
  2. 2.Resource Recovery Research Center, Mineral Resources Research DivisionKorea Institute of Geoscience and Mineral Resources (KIGAM)DaejeonSouth Korea

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