The selective leaching and separation of molybdenum from complex molybdenite concentrate containing copper

被引：0

作者：

机构：

[1] College of Chemistry and Chemical Engineering, Key Laboratory of Resources Chemistry of Nonferrous Metals, Central South University, Changsha, Hunan

来源：

| 1600年 / Society for Mining, Metallurgy and Exploration卷 / 30期

关键词：

Copper; Electro-oxidation; Kinetic analysis; Molybdenite; Molybdenum;

D O I：

10.1007/bf03402467

中图分类号：

学科分类号：

摘要：

In recent years, there has been an increasing focus on the hydrometallurgical processing of molybdenite, with the decline of high-grade and easily handled molybdenum minerals. In this work, a novel method of selective extraction of complex molybdenite concentrate, which is characteristic of high-grade copper ore, has been investigated. The results show that the leaching of chalcopyrite was impacted by the pH of the electrolyte when sodium carbonate and ammonium acid carbonate were added to the electrolyte. The leaching rate of molybdenum reached 99.39%, but chalcopyrite could not be leached at all in 240 min under experimental conditions of liquidto- solid ratio 25:1, concentration of NaCl 4 mol/L, pH=9, room temperature and agitation speed 400 rpm. The grade of copper in the residue was 21.84%, with a recovery 99.93%. The technology of selective electro-oxidation leaching of molybdenum and recovery of copper from complex molybdenite concentrate is an effective separation method. The diffusion control model can be used to describe the process of leaching of molybdenum. The activation energy of the leaching reaction was found to be approximately 9.21 kJ/mol. © SME.

引用

页码：233 / 237

页数：4

共 22 条

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