Hydrometallurgical Processes for the Recovery of Rare Earths, Nickel and Cobalt in Chloride Medium

被引：1

作者：

Lakshmanan, V. I. ^{[1
]}

Sridhar, R. ^{[1
]}

Tait, D. ^{[1
]}

Halim, M. A. ^{[1
]}

机构：

[1] Proc Res ORTECH Inc, 2350 Sheridan Pk Dr, Mississauga, ON L5K 2T4, Canada

来源：

APPLICATIONS OF PROCESS ENGINEERING PRINCIPLES IN MATERIALS PROCESSING, ENERGY AND ENVIRONMENTAL TECHNOLOGIES | 2017年

关键词：

Rare earths; Nickel; Cobalt; Laterite; Mixed chloride; Atmospheric leaching; Solvent extraction; EXTRACTION;

D O I：

10.1007/978-3-319-51091-0_15

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Rare earth elements (REEs), nickel and cobalt find their use in developing strategic materials and their demand is consistently increasing in the world while the extractable ores of these metals are gradually depleting. Process Research ORTECH Inc. (PRO) has developed innovative mixed chloride leaching processes for the recovery of REEs from alumino-silicate ores, and nickel and cobalt from laterite ores. The addition of magnesium chloride in hydrochloric acid enhances the activity of the hydrogen ion by orders of magnitude, which permit rapid leaching rates at moderate temperature and atmospheric pressure, along with high metal recovery. Innovative solvent extraction process steps are used for the separation of these metals from pregnant leach solutions. PRO's processes also produce value added by-product of high purity iron oxide and recycle chloride lixiviant to the leaching stage. This paper describes the leaching and separation reaction mechanisms and potential process flowsheets.

引用

页码：169 / 177

页数：9

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