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The oxidation pretreatment of a sulfidic refractory gold ore with pyrolusite
Advanced Materials Research Vols. 550-553 (2012) pp 2891-2894

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1.


The oxidation pretreatment of a sulfidic refractory gold ore with pyrolusite


Hu, Surong1 ; Wang, Chao1; Wei, Qifeng2



Source: Advanced Materials Research, v 550-553, p 2891-2894, 2012, Advances in Chemical Engineering II;  ISSN: 10226680;  ISBN-13: 9783037854556;  DOI: 10.4028/www.scientific.net/AMR.550-553.2891; Conference: 2nd International Conference on Chemical Engineering and Advanced Materials, CEAM 2012, July 13, 2012 - July 15, 2012; Publisher: Trans Tech Publications


Author affiliations:

1 Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang, 621900, China

2 School of Chemical Engineering and Techonology, Harbin Institute of Technology, Harbin 150001, China

Abstract:

An attempt has been made to study the pretreatment of sulfidic refractory gold ore with pyrolusite. The influences of various parameters were studied to optimize the conditions. The optimum leaching conditions were pyrolusite/gold ore mass ratio of 3.0, H2SO4 concentration of 3.0 M, temperature of 100¡ãC, particle size of 45¦Ìm, stirring speed of 200 rpm. After the pretreatment, gold and silver were exposed, these made the extraction of the precious metal in the gold ore much easier. © (2012) Trans Tech Publications, Switzerland.(9 refs)

Main heading: Gold

Controlled terms: Chemical engineering  -  Gold ore treatment  -  Leaching  -  Ores

Uncontrolled terms: Gold and silver  -  Gold ores  -  Mass ratio  -  Optimum leaching conditions  -  Oxidation pre-treatment  -  Pre-Treatment  -  Pyrolusite  -  Refractory gold ore  -  Stirring speed

Classification Code: 502 Mines and Quarry Equipment and Operations -  504 Mines and Mining, Metal -  505 Mines and Mining, Nonmetallic -  533.1 Ore Treatment -  547.1 Precious Metals -  805.1 Chemical Engineering

Database: Compendex

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