Chemical leaching mechanism of chalcopyrite with difference mineralization

This paper presents the effect of mineralization on chalcopyrite chemical leaching in very simple H2SO4 solution systems at pH 1.0, with 5 % chalcopyrite con- centrate at 65 ~C. The copper extractions after 12 days leaching of marine volcanic and porphyry chalcopyrite were 85.7 and 66.6 %, respectiv...

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Published in:Rare metals 2013-02, Vol.32 (1), p.63-66
Main Authors: Bai, Jing, Wen, Jian-Kang, Huang, Song-Tao, Wu, Biao
Format: Article
Language:English
Subjects:
Biomaterials
Chalcopyrite
Chemistry and Materials Science
Copper
Energy
H2SO4
Leaching
Marine
Materials Engineering
Materials Science
Metallic Materials
Mineralization
Nanoscale Science and Technology
Passivation
Physical Chemistry
Sulfur
Sulphur
X射线衍射
化学浸出
机制
海相火山岩
溶液系统
矿化
黄铜矿
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description This paper presents the effect of mineralization on chalcopyrite chemical leaching in very simple H2SO4 solution systems at pH 1.0, with 5 % chalcopyrite con- centrate at 65 ~C. The copper extractions after 12 days leaching of marine volcanic and porphyry chalcopyrite were 85.7 and 66.6 %, respectively. It was found that sulphur element formed on the surface of two samples as a result of XRD and SEM-EDAX, which was very porous that did not inhibit chemical leaching reaction. Meanwhile, （Cu, Fe）12As4S13 formed on the surface of porphyry type chalcopyrite, which may cause low leaching ratio of por- phyry type chalcopyrite as passivation. （Cu, Fe）12As4S13 may be one kind of the polysulphide compounds.
doi_str_mv 10.1007/s12598-013-0004-6
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Meanwhile, （Cu, Fe）12As4S13 formed on the surface of porphyry type chalcopyrite, which may cause low leaching ratio of por- phyry type chalcopyrite as passivation. （Cu, Fe）12As4S13 may be one kind of the polysulphide compounds.</description><identifier>ISSN: 1001-0521</identifier><identifier>EISSN: 1867-7185</identifier><identifier>DOI: 10.1007/s12598-013-0004-6</identifier><language>eng</language><publisher>Springer Berlin Heidelberg: Nonferrous Metals Society of China</publisher><subject>Biomaterials ; Chalcopyrite ; Chemistry and Materials Science ; Copper ; Energy ; H2SO4 ; Leaching ; Marine ; Materials Engineering ; Materials Science ; Metallic Materials ; Mineralization ; Nanoscale Science and Technology ; Passivation ; Physical Chemistry ; Sulfur ; Sulphur ; X射线衍射 ; 化学浸出 ; 机制 ; 海相火山岩 ; 溶液系统 ; 矿化 ; 黄铜矿</subject><ispartof>Rare metals, 2013-02, Vol.32 (1), p.63-66</ispartof><rights>The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg 2013</rights><rights>Copyright © Wanfang Data Co. 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subjects Biomaterials
Chalcopyrite
Chemistry and Materials Science
Copper
Energy
H2SO4
Leaching
Marine
Materials Engineering
Materials Science
Metallic Materials
Mineralization
Nanoscale Science and Technology
Passivation
Physical Chemistry
Sulfur
Sulphur
X射线衍射
化学浸出
机制
海相火山岩
溶液系统
矿化
黄铜矿
title Chemical leaching mechanism of chalcopyrite with difference mineralization
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