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某碳质金矿氯离子与有机碳质物协同“劫金”性能研究
- 作者：
郭金溢|林海彬|李有辉|邱耀兴
- 作者单位：
- 低品位难处理黄金资源综合利用国家重点实验室| 厦门紫金矿冶技术有限公司
基金项目：
- 2021年福建省对外合作项目（2021I1012）
详细信息：
- 作者简介：
- 郭金溢（1987—），男，高级工程师，从事湿法冶金及废水环保处理等方面的研究工作；E?mail：282506129@qq. com
- PDF下载
Synergistic preg‑robbing behavior of chloride ions and organic carbonaceous matter in a carbonaceous gold ore
- English Author：
Guo Jinyi¹,², Lin Haibin¹,², Li Youhui¹,², Qiu Yaoxing¹,²
- Unit：
- （1. State Key Laboratory of Comprehensive Utilization of Low‑grade Refractory Gold Resources; 2. Xiamen Zijin Mining and Metallurgy Technology Co., Ltd.）
- 摘要
- 在线预览
- 参考文献
摘要:
针对贵州某矿区碳质难处理金矿开展加压氧化过程中氯离子与有机碳质物协同“劫金”性能研究，考察了氯离子质量浓度、有机碳含量、反应温度、反应时间等对协同“劫金”效应的影响。结果表明：“劫金”效应与有机碳及氯离子含量，加压氧化反应温度及时间等因素有关。在金精矿与原矿按照质量比1∶1进行配矿，控制有机碳质量分数4.5 %，反应温度210 ℃，反应时间55 min，活性炭用量30 g/L条件下进行加压氧化—炭浸氰化，金浸出率达93.9 %。通过加入硝酸银抑制剂等降低氯离子含量，降低该碳质金矿加压氧化过程“劫金”效应。
关键词:
碳质金矿；氯离子；“劫金”性能；有机碳；加压氧化；氰化
Abstract:
This study investigates the synergistic preg-robbing behavior of chloride ions and organic carbonaceous matter during the pressure oxidation process of a refractory carbonaceous gold ore from a mining area in Guizhou Province. The effects of chloride ion mass concentration, organic carbon content. reaction temperature, and reaction time on the synergistic preg-robbing effect were examined. Results indicate that preg-robbing is influenced by the presence of organic carbon, chloride ions, as well as the pressure oxidation temperature and time. When gold concentrate and raw ore were blended at a mass ratio of 1:1. with an organic carbon mass fraction of 4.5 %. a reaction temperature of 210 °C a reaction time of 55 min, and an activated carbon dosage of 30 g/L, the pressure oxidation followed by carbon-in-leach cyanidation yielded a gold leaching rate exceeding 93.9 %. The preg-robbing effect was effectively mitigated by reducingchloride ion content using silver nitrate as an inhibitor, improving the pressure oxidation performance for the carbona-ceous gold ore.
Keywords:
carbonaceous gold ore; chloride ion; preg‑robbing behavior; organic carbon; pressure oxidation; cyanidation
