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| New Process for Gold and Molybdenum Extraction from Low Grade Gold-Molybdenum Mixed Concentrate |
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Received:January 03, 2014
Revised:January 07, 2014
Accepted:January 08, 2014
Published Online:June 23, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.07.013 |
| KeyWord:gold-molybdenum mixed concentrates; oxidizing roasting; sodium carbonate; leaching; separation |
| Author | Institution |
| caoyaohua |
中国地质科学院郑州矿产综合利用研究所 |
| liqing |
河南省工业学校 |
| gaozhaoguo |
中国地质科学院郑州矿产综合利用研究所 |
| liuhongzhao |
中国地质科学院郑州矿产综合利用研究所 |
| wangwei |
中国地质科学院郑州矿产综合利用研究所 |
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| Abstract: |
| Low grade gold-molybdenum mixed concentrate was treated by new processes of desulfurization and decarbonization by oxidizing roasting, molybdenum leaching with sodium carbonate, and gold cyaniding from molybdenum leaching residue. The results show that molybdenum leaching rate is 91% when rough concentrate is oxidization roasted at 600 ℃ for 1.5 h, molybdenum calcining is leached at 80~90 ℃ for 1.0~1.5 h by sodium carbonate of 40% of weight of calcining with ratio of liquid to solid of 3~4. Gold cyaniding leaching rate from molybdenum leaching residue is 95% above. |
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