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| Acid Leaching Pretreatment for Arsenic-bearing Gold Mine and Pyrolusite to Remove Arsenic and Leach Gold |
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Received:June 07, 2015
Revised:June 11, 2015
Accepted:June 15, 2015
Published Online:November 18, 2015
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| DOI：doi：10.3969/j.issn.1007-7545.2015.12.012 |
| KeyWord:arsenic-bearing gold mine; pyrolusite; acid leaching; arsenic removal rate |
| Author | Institution |
| fengyali |
北京科技大学 土木与环境工程学院 |
| wumengni |
北京科技大学 土木与环境工程学院 |
| lihaoran |
中国科学院过程工程研究所 生化工程重点实验室 |
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| Abstract: |
| Arsenic-bearing gold mine was acid leaching pretreated with pyrolusite to remove arsenic and leach gold. The effects of reaction temperature, reaction time, vitriol concentration, ratio of liquid to solid (L/S), and mass ratio of pyrolusite to gold mine (mpg) on gold leaching rate were investigated by orthogonal test. The results show that arsenic removal rate is 85.83% and gold leaching rate is 93.57% under the optimum conditions including reaction temperature of 150 ℃, reaction time of 3h, mpg=2, H2SO4 concentration of 10 mol/L, and L/S=2. |
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