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Article

Selective Leaching of Molybdenum from Bulk Concentrate by Electro-Oxidation

1
Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Korea
2
Resource Recycling Engineering, University of Science and Technology, Daejeon 34113, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Silvie Brožová
Metals 2021, 11(12), 1904; https://doi.org/10.3390/met11121904
Received: 2 November 2021 / Revised: 23 November 2021 / Accepted: 24 November 2021 / Published: 26 November 2021
(This article belongs to the Special Issue Leaching and Recycling of Metals)
This paper proposes selective leaching of molybdenum from Mo/Cu complex bulk concentrates in a 5 M NaCl solution using the electro-oxidation method. Here, the effects of several factors such as pH, pulp density, current density, and temperatures were investigated. A higher leaching yield of Mo increased with increasing pH from 5 to 9 and decreased with increasing pulp density from 1 to 10%. A rise in current density did not help enhance Mo, and the elevating temperature did not always result in a higher leaching yield. Application of ultrasonic led to higher leaching yield of Mo. Ninety-two percent of leaching yield was obtained upon leaching of Mo in 5 M NaCl at 25 °C, pulp density of 5%, and the current density of 0.292 A/g under ultrasonic irradiation with a power of 27 kW. The resultant residue mainly consisted of chalcopyrite. View Full-Text
Keywords: electro-oxidation; molybdenum; selective leaching; molybdenite; chalcopyrite electro-oxidation; molybdenum; selective leaching; molybdenite; chalcopyrite
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MDPI and ACS Style

Chung, K.W.; Yoon, H.-S.; Kim, C.-J.; Jeon, H.-S. Selective Leaching of Molybdenum from Bulk Concentrate by Electro-Oxidation. Metals 2021, 11, 1904. https://doi.org/10.3390/met11121904

AMA Style

Chung KW, Yoon H-S, Kim C-J, Jeon H-S. Selective Leaching of Molybdenum from Bulk Concentrate by Electro-Oxidation. Metals. 2021; 11(12):1904. https://doi.org/10.3390/met11121904

Chicago/Turabian Style

Chung, Kyeong Woo, Ho-Sung Yoon, Chul-Joo Kim, and Ho-Seok Jeon. 2021. "Selective Leaching of Molybdenum from Bulk Concentrate by Electro-Oxidation" Metals 11, no. 12: 1904. https://doi.org/10.3390/met11121904

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