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Bio-oxidation of a high-sulfur and high-arsenic refractory gold concentrate using a two-stage process

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成果类型:
期刊论文
作者:
Wang, Guohua*;Xie, Shuibo;Liu, Xinxing;Wu, Yonghong;Liu, Yingjiu;...
通讯作者:
Wang, Guohua
作者机构:
[Xie, Shuibo; Liu, Yingjiu; Zeng, Taotao; Wang, Guohua] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
[Liu, Xinxing; Wu, Yonghong] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.
[Liu, Xinxing; Wu, Yonghong] Cent S Univ, Minist Educ, Key Lab Biohydromet, Changsha 410083, Hunan, Peoples R China.
通讯机构:
[Wang, Guohua] U
Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
语种:
英文
关键词:
Bio-oxidation;Two-stage process;Arsenopyrite;Gold concentrate
期刊:
Minerals Engineering
ISSN:
0892-6875
年:
2018
卷:
120
页码:
94-101
基金类别:
National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [NSFC 11475080, 51320105006]
机构署名:
本校为第一且通讯机构
院系归属:
土木工程学院
摘要:
To improve the oxidation rate of high-sulfur and high-arsenic refractory gold concentrate (HGC), a two-stage chemical-biological oxidation approach, which contained a high-temperature chemical oxidation stage (ferric leaching stage) and a subsequent biological oxidation stage with mesophiles, was used in this experiment. The surface analysis of pure arsenopyrite using scanning electron microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) indicated that the surface lattice structure was partly disrupted after chemical oxidation; as a result, th...

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