Effect of temperature on column bioleaching of a refractory gold ore
文献类型：会议论文
| 作者 | Wu, Zeng Ling1,2; Huang, Zhong Sheng1; Ruan, Ren Man3; Zhong, Shui Ping1; Chan, Brenda K.C.1 |
| 出版日期 | 1905-07-05 |
| 会议日期 | October 8, 2013 - October 11, 2013 |
| 会议地点 | Antofagasta, Chile |
| 关键词 | Gold ore treatment - Oxidation - Particle size analysis - Refractory materials - Extraction - Sulfur compounds - Arsenic - Organic carbon - Particle size |
| 卷号 | 825 |
| DOI | 10.4028/www.scientific.net/AMR.825.352 |
| 页码 | 352-355 |
| 英文摘要 | Low-grade, finely disseminated refractory sulfide gold ores associated with high arsenic are ubiquitous resources all over the world. Since heap bio-oxidation is an economic and promising biotechnology to recover gold, low grade, high organic carbon and arsenic bearing gold ores from Zhesang Mines in China were chosen for this purpose to study the key factors that would affect biooxidation. Pyrite and arsenopyrite (particle size 0.002-0.22 mm) were the main minerals from Mineral Liberation Analysis (MLA). Column biooxidation and cyanidation of mineral size 240 days of biooxidation with mixed mesophiles, while higher sulfide-S dissolution (77%) was obtained at 60掳C. Sulfide-S fraction distribution revealed higher mineral decomposition, finer fractions and eventually higher sulfide oxidation at 60掳C. Jarosite and scorodite were found from the residues at 60掳C by SEM and EDX, which implies higher temperature accelerated arsenic precipitation. No elemental sulfur was detected during the biooxidation at 35-60掳C. After bio-oxidation, column cyanidation was successfully demonstrated recovery of gold from the residues, with gold extraction rate reaching 66%. 漏 (2013) Trans Tech Publications, Switzerland. |
| 资助机构 | Trans Tech Publications Ltd, Kreuzstrasse 10, Zurich-Durnten, CH-8635, Switzerland |
| 会议录 | 20th International Biohydrometallurgy Symposium, IBS 2013
 |
| 学科主题 | Pyrites |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/59455]  |
| 作者单位 | 1.State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co. Ltd, Shanghang 364200, China 2.Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China 3.Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China |
| 推荐引用方式 GB/T 7714 | Wu, Zeng Ling,Huang, Zhong Sheng,Ruan, Ren Man,et al. Effect of temperature on column bioleaching of a refractory gold ore[C]. 见:. Antofagasta, Chile. October 8, 2013 - October 11, 2013. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。