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| Chinese Bio-oxidation Gold Extraction Technology Reaches International Advanced Level | |
| 作者姓名： | HAO Ziguo FEI Hongcai HAO Qingqing and Susan TURNER |
| 作者单位： | 2 Chinese Academy of Geological Sciences, Beijing 100037, China 2 Editorial Office of Acta Geologica Sinica (English edition), Geological Society of China, Beijing 100037, China 3 Editorial Office of Geology and Exploration, Institute of Mineral Resourcesnce Fund (No.2462014YJRC027) from China University of Petroleum-Beij |
| 摘 要： | In Liaoning, Hunan, Guangxi, Guizhou, Gansu, Sichuan, Anhui, Jilin and other provinces in China, there is a wide occurrence of metal quantity over 1000 tons of refractory gold ores, principally because of low gold recoveries and become ＂stay mine＂. Features of refi＇actory gold ores are： gold in micro-particles or a microscopic state that is wrapped in pyrite, presence of arsenopyrite and other sulfide minerals or disseminated in the crystal lattice of sulfide minerals; harmful impurity elements such as arsenic, carbon, mercury, antimony, copper with high content are closely related with the gold, and these elements affect the contact reaction between the gold and solvent extraction, making the recovery of the gold extraction process low. In the past 20 years, overseas countries have developed the application of the roasting oxidation method, hot acid （alkali） oxidation, bacterial oxidation and flash chlorination oxidation technology to solve this problem.Among these, biological oxidation has developed rapidly in the domestic market and gold enterprises abroad because of its low investment in infrastructure, low production costs, less environmental pollution, simple process and easy control, etc. |
| 关 键 词： | 提金技术 生物氧化 中国 难处理金矿石 进水 国际 金回收率 微观状态 |
Chinese Bio-oxidation Gold Extraction Technology Reaches International Advanced Level |
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| Authors: | HAO Ziguo FEI Hongcai LIU Lian HAO Qingqing Susan TURNER |
| Institution: | 1. Chinese Academy of Geological Sciences, Beijing 100037, China ;Editorial Office of Acta Geologica Sinica(English edition), Geological Society of China, Beijing 100037, China 2. Editorial Office of Geology and Exploration, Institute of Mineral Resources Research, China Metallurgical Geology Bureau, Beijing 100025, China 3. Editorial Office of Acta Geologica Sinica(English edition), Geological Society of China, Beijing 100037, China |
| Abstract: | |
| Keywords: | refractory Liaoning Anhui Jilin Hunan Guizhou microscopic Gansu smelting overseas |
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