Leaching Chalcopyrite with an Imidazolium-Based Ionic Liquid and Bromide

被引：24

作者：

Rodriguez, Marcelo ^{[1
]}

Ayala, Luis ^{[2
]}

Robles, Pedro ^{[3
]}

Sepulveda, Rossana ^{[4
]}

Torres, David ^{[5
]}

Raul Carrillo-Pedroza, Francisco ^{[6
]}

Jeldres, Ricardo I. ^{[7
]}

Toro, Norman ^{[1
,5
]}

机构：

[1] Univ Catolica Norte, Dept Ingn Met & Minas, Av Angamos 610, Antofagasta 1270709, Chile

[2] Univ Arturo Prat, Fac Engn & Architecture, Almirante Juan Jose Latorre 2901, Antofagasta 1244260, Chile

[3] Pontificia Univ Catolica Valparaiso, Escuela Ingn Quim, Valparaiso 2340000, Chile

[4] Univ Atacama, Dept Ingn Met, Copiapo 1531772, Chile

[5] Univ Politecn Cartagena, Geol & Cartog Dept, Dept Min, Murcia 30203, Spain

[6] Univ Autonoma Coahuila, Fac Met, Carretera 57 Km 5, Monclova 25710, Mexico

[7] Univ Antofagasta, Dept Ingn Quim & Proc Miner, Antofagasta 1270300, Chile

来源：

METALS | 2020年 / 10卷 / 02期

关键词：

leaching; chalcopyrite; ionic liquid; bromide; PRINTED-CIRCUIT BOARDS; PURE GOLD DISSOLUTION; QUATERNARY AMMONIUM; HYDROGEN-PEROXIDE; AQUEOUS-SOLUTIONS; METAL EXTRACTION; FERRIC SULFATE; BETA-DIKETONE; COPPER; CHLORIDE;

D O I：

10.3390/met10020183

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The unique properties of ionic liquids (ILs) drive the growing number of novel applications in different industries. The main features of ILs are high thermal stability, recyclability, low flash point, and low vapor pressure. This study investigated pure chalcopyrite dissolution in the presence of the ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate, [BMIm]HSO4, and a bromide-like complexing agent. The proposed system was compared with acid leaching in sulfate media with the addition of chloride and bromide ions. The results demonstrated that the use of ionic liquid and bromide ions improved the chalcopyrite leaching performance. The best operational conditions were at a temperature of 90 degrees C, with an ionic liquid concentration of 20% and 100 g/L of bromide.

引用

页数：13

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