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| Study on Gold Leaching Kinetics from Sb-bearing Gold Concentrate with Alkaline Sulfide |
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Received:June 04, 2019
Revised:June 06, 2019
Accepted:June 10, 2019
Published Online:October 23, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.02.011 |
| KeyWord:Sb-bearing gold concentrate; leaching kinetics; apparent activation energy; reaction order |
| Author | Institution |
| Jin rangong |
北京矿冶研究总院 |
| Lu bingchuan |
招远市招金金合科技有限公司 |
| Wang shifu |
甘肃招金贵金属冶炼有限公司 临洮 |
| Sun hao |
甘肃招金贵金属冶炼有限公司 临洮 |
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| Abstract: |
| Leaching kinetics of gold from refractory antimony-bearing gold ores with alkaline sulfide under the condition of 20~70 ℃ and sodium sulphide concentration of 20~80 g/L was studied. The results show that apparent activation energy for gold leaching with sodium sulfide is Ea=10.948 kJ/mol within the scope. Lower value of Ea shows that gold leaching is controlled by diffusion of reactants. During gold leaching with sodium sulfide, when leaching reaction does not reach equilibrium only from perspective of apparent rate, reaction series of sodium sulfide in gold dissolution is 3.07. |
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