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| Research on Microbial Pre-oxidation Process of a Refractory Primary Gold OreZhanghailiang Lishiliang Malifeng |
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Received:April 16, 2019
Revised:April 24, 2019
Accepted:May 21, 2019
Published Online:December 24, 2019
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| DOI： |
| KeyWord:refractory;primary gold;ore, microbial;pre-oxidation, clear;water start-up, column;bioleaching, heap;leaching |
| Author | Institution |
| zhanghailiang |
BGRIMM |
| lishiliang |
BGRIMM |
| malifeng |
BGRIMM |
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| Abstract: |
| The applicability and possibility of microbial pre-oxidation and clear water start-up are researched to determine appropriate heap leaching particle size and temperature through direct leaching test, microbial pre-oxidation test, clear water start-up exploratory experiment and column bioleaching conditional test of a certain refractory primary gold ore. The results show that under the conditions of P80=4.5mm and room temperature, the Au grade of leaching residue can be reduced to 0.47g/t, and the Au leaching rate is 62.70%. Compared with the leaching rate of direct leaching, the leaching rate of this method increases by about 35%. |
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