| 嗜热金属球菌对镍钼矿的浸出 |
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| 引用本文： | 陈家武,高从堦,张启修,肖连生,张贵清.嗜热金属球菌对镍钼矿的浸出[J].北京科技大学学报,2009,31(10). |
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| 作者姓名： | 陈家武 高从堦 张启修 肖连生 张贵清 |
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| 作者单位： | 1. 中南大学冶金科学与工程学院,长沙,410083;湖南生物机电职业技术学院环境工程系,长沙,410127
2. 中南大学冶金科学与工程学院,长沙,410083 |
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| 基金项目： | 国家高技术研究发展计划资助课题(No.2007AA06Z129) |
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| 摘 要： | 对嗜热金属球菌(Metallosphaera sedula)浸出镍钼硫化矿进行了研究,以探求高效可持续的生物冶金方法. 结果表明:有菌组镍的浸出率均在91%以上,而无菌组为77.64%;以亚铁为能源培养的驯化菌组镍和钼的浸出率分别为96.56%和65.43%,非驯化菌组为94.37%和60.20%;起始pH为2时浸出组镍浸出率达97.55%,钼浸出率为62.97%;粒径小于0.048 mm和小于0.077 mm的浸样镍浸出率分别为97.58%和95.37%,钼浸出率分别为64.46%和59.54%;低矿浆质量浓度比高矿浆质量浓度的浸出率高,5 g·L-1矿浆镍和钼的浸出率分别达98.67%和81.87%;在无菌条件下,浸样添加0.5 g·L-1 Fe3+和对照组镍浸出率分别为91.19%和77.64%,钼浸出率为52.25%和50.19%;透析浸出率比非透析浸出率低;金属球菌浸出组比氧化亚铁硫杆菌浸出组的浸出率高,前者镍和钼浸出率分别为94.01%和64.74%,后者仅为67.77%和38.16%.
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| 关 键 词： | 金属球菌 氧化亚铁硫杆菌 驯化 浸出 |
Leaching of nickel-molybdenum sulfide ores with Metallosphaera sedula |
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| CHEN Jia-wu,GAO Cong-jie,ZHANG Qi-xiu,XIAO Lian-sheng,ZHANG Gui-qingCollege of Metallurgical Science , Engineering,Central South University,Changsha ,China.Leaching of nickel-molybdenum sulfide ores with Metallosphaera sedula[J].Journal of University of Science and Technology Beijing,2009,31(10). |
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| Authors: | CHEN Jia-wu GAO Cong-jie ZHANG Qi-xiu XIAO Lian-sheng ZHANG Gui-qingCollege of Metallurgical Science Engineering Central South University Changsha China |
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| Institution: | CHEN Jia-wu1,2),GAO Cong-jie1),ZHANG Qi-xiu1),XIAO Lian-sheng1),ZHANG Gui-qing1)1)College of Metallurgical Science , Engineering,Central South University,Changsha 410083,China 2)Department of Environmental Engineering,Hunan Biological , Electro-Mechanical & Polytechnic,Changsha 410127,China |
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| Abstract: | The bioleaching of nickel-molybdenum sulfide ores with the thermophilic and acidophilic lithotroph,Metallosphaera sedula,with shaking flasks was studied in order to probe a more efficient and sustainable biometallurgical way.The result shows that the leaching rate of Ni with Metallosphaera sedula was all more than 91%,but that in the groups without Metallosphaera sedula was 77.64%.The leaching rates of Ni and Mo in the groups with adapted Metallosphaera sedula cultured with Fe2+ were 96.56% and 65.43%,those... |
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| Keywords: | Metallosphaera sedula Acidthiobacillus ferrooxidans domestication leaching |
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