LEACHING OF REFRACTORY GOLD ORES BY MICROWAVE IRRADIATION: COMPARISON WITH CONVENTIONAL LEACHING

被引：15

作者：

Chen, G. ^{[1
]}

Chen, J. ^{[1
]}

Zhang, Z. Y. ^{[1
]}

Guo, S. H. ^{[1
]}

Zhang, Z. B. ^{[1
]}

Peng, J. H. ^{[1
]}

Srinivasakannan, C. ^{[2
]}

Li, X. Q. ^{[3
]}

Zhuang, Y. K. ^{[3
]}

Xu, Z. M. ^{[3
]}

机构：

[1] Kunming Univ Sci & Engn, Fac Met & Energy Engn, Minist Educ, Key Lab Unconvent Met, Kunming, Peoples R China

[2] Petr Inst, Chem Engn Program, Abu Dhabi, U Arab Emirates

[3] Zhaojin Min Ind Co Ltd, Jinchiling Gold Mine, Zhaoyuan, Peoples R China

来源：

METALLURGIST | 2013年 / 57卷 / 7-8期

关键词：

refractory gold ores; leaching; microwave irradiation; SPENT CATALYST; PRETREATMENT; BIOOXIDATION; EXTRACTION; RECOVERY; ZINC;

D O I：

10.1007/s11015-013-9783-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The present paper attempts to assess the effects of microwave irradiation on the leachability of refractory gold ores. Characteristics of the crystal structure and microstructure of the ores were determined by x-ray structural analysis (XRD) and scanning electron microscopy (SEM) before and after microwave irradiation. Compared to conventional processes, microwave leaching processes are highly energy-efficient, take less time, and do not harm the environment. The experimental results show that the amount of gold extracted increases with microwave leaching temperature. The results demonstrate that microwave irradiation techniques can be applied effectively and efficiently to the leaching of refractory gold ores.

引用

页码：647 / 653

页数：7

共 28 条

[1] Improved grindability and gold liberation by microwave pretreatment of a free-milling gold ore [J].

Amankwah, R. ;

Khan, A. ;

Pickles, C. ;

Yen, W. .

TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY SECTION C-MINERAL PROCESSING AND EXTRACTIVE METALLURGY, 2005, 114 (01) :C30-C36

[2] A two-stage bacterial pretreatment process for double refractory gold ores [J].

Amankwah, RK ;

Yen, WT ;

Ramsay, JA .

MINERALS ENGINEERING, 2005, 18 (01) :103-108

[3] Gold-bearing arsenopyrite and pyrite in refractory ores: analytical refinements and new understanding of gold mineralogy [J].

Benzaazoua, M. ;

Marion, P. ;

Robaut, F. ;

Pinto, A. .

MINERALOGICAL MAGAZINE, 2007, 71 (02) :123-142

[4] Metal recovery from spent refinery catalysts by means of biotechnological strategies [J].

Beolchini, F. ;

Fonti, V. ;

Ferella, F. ;

Veglio, F. .

JOURNAL OF HAZARDOUS MATERIALS, 2010, 178 (1-3) :529-534

[5] Response of microbial systems to thermal stress in biooxidation-heap pretreatment of refractory gold ores [J].

Brierley, JA .

HYDROMETALLURGY, 2003, 71 (1-2) :13-19

[6] Strategies for efficient start-up of continuous biooxidation process for refractory gold ores [J].

Chandraprabha, MN ;

Modak, JM ;

Natarajan, KA ;

Raichur, AM .

MINERALS ENGINEERING, 2002, 15 (10) :751-753

[7] Green evaluation of microwave-assisted leaching process of high titanium slag on life cycle assessment [J].

Chen Guo ;

Chen Jin ;

Peng Jin-hui ;

Wan Run-dong .

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2010, 20 :S198-S204

[8] Response Surface Methodology Applied to Optimize the Experimental Conditions for Preparing Synthetic Rutile by Microwave Irradiation [J].

Chen, Guo ;

Peng, Jinhui ;

Chen, Jin ;

Zhang, Shimin .

HIGH TEMPERATURE MATERIALS AND PROCESSES, 2009, 28 (03) :165-174

[9] Characterizing gold in refractory sulfide gold ores and residues [J].

Chen, TT ;

Cabri, LJ ;

Dutrizac, JE .

JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 2002, 54 (12) :20-22

[10] Characterization and treatment of artisanal gold mine tailings [J].

de Andrade Lima, L. R. P. ;

Bernardez, L. A. ;

Barbosa, L. A. D. .

JOURNAL OF HAZARDOUS MATERIALS, 2008, 150 (03) :747-753

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