Recovering Gold from a Gold-Bearing Pyrite by Flotation and Chemical Process

Qing Li; Bao Liang Ge; Jie Liu; Chao Zhu

doi:10.4028/www.scientific.net/AMR.610-613.81

Paper Titles

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Preparation and Photocatalytic Activity of Heteropolyacid Supported on Titanium Dioxide Photocatalysts
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Preparation, Purification and Identification of Antioxidant Peptides with Bienzyme Hydrolysis from Rice Bran Protein
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Recovering Gold from a Gold-Bearing Pyrite by Flotation and Chemical Process
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Photoelectrocatalytic Degradation of Benzoquinone Using Different Cathode Materials
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Effect of 1,4-Dichlorobenzene on Soil Microbial Populations and Enzyme Activities
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Effects of Interaction between PAMAM and Polyoxometalates on Catalytic Performance for Oxidation of Isobutyraldehyde
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 610-613Recovering Gold from a Gold-Bearing Pyrite by...

Recovering Gold from a Gold-Bearing Pyrite by Flotation and Chemical Process

Abstract:

The ore assays 2.5g/t Au, 23.4% S and 56.6% Fe. This research enriched the gold by flotation, and recovered it by a chemical process. The obtained flotation concentrate contains 66.35%g/t gold and 37.06% S with recovery 96.14% and 96.42% respectively. A roasting process was conducted at 900-1000°C for 5.5hrs, followed by cyanide leaching of the residue. The gold leaching rate reaches 87.4% with an adsorption rate of 97.6%. Furthermore, the regrinding of the concentrate to 95% -0.18μm was conducted, and followed by cyanide leaching at pH11.5 for 12hrs. The results show the amount leached gold reaches 92.5% with an adsorption rate of 99.21%, which increases by 1.61% and 5.1% in comparison with the roasting-leaching process.