Selective Leaching of Molybdenum from Bulk Concentrate by Electro-Oxidation

Author:

Chung Kyeong Woo12,Yoon Ho-Sung1,Kim Chul-Joo1,Jeon Ho-Seok12

Affiliation:

1. Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Korea

2. Resource Recycling Engineering, University of Science and Technology, Daejeon 34113, Korea

Abstract

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.

Funder

Ministry of Science ICT and Future Planning

Publisher

MDPI AG

Reference43 articles.

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