环保浸金药剂在生物氧化提金工艺中的应用探索试验研究  

Exploratory experimental study on the application of eco-friendly gold leaching agents in bio-oxidation gold extraction processes

作　　者：董红建 Dong Hongjian(Zhongjin Gold Corporation Limited)

机构地区：[1]中金黄金股份有限公司

出　　处：《黄金》2024年第12期76-79,共4页Gold

基　　金：国家重点研发计划项目(2022YFC2105302)。

摘　　要：为应对日趋严苛的环保要求,开展了环保浸金药剂在生物氧化提金工艺中的应用探索试验研究,以探索其替代氰化钠药剂工业化应用的可行性。在矿浆浓度、浸出温度、pH、浸出时间等均相同的条件下,分别对氰化钠、环保药剂A、环保药剂B、环保药剂C等4种浸金药剂的浸金效果进行了系列探索试验。同时,结合氰化系统内液相闭路循环的实际情况,对上述4种药剂的浸出贵液进行相同条件的锌粉置换循环试验,对比置换贫液在长期闭路循环条件下,杂质离子富集对置换效果等指标的影响问题及应对方案。以期为黄金提取提供一套科学的理论依据与实践指导。In response to increasingly stringent environmental regulations,an exploratory experimental study was conducted on the application of eco-friendly gold leaching agents in bio-oxidation gold extraction processes to assess the feasibility of replacing sodium cyanide with industrial alternatives.Under identical conditions of slurry concentration,leaching temperature,pH value,and leaching time,an exploratory experimental study was carried out on the gold leaching performances of 4 gold leaching agents:sodium cyanide,eco-friendly agent A,eco-friendly agent B,and eco-friendly agent C.Additionally,considering the actual conditions of the closed-loop liquid phase circulation in the cyanidation system,loop zinc powder replacement tests under identical conditions were performed on pregnant solutions obtained using the 4 agents.The study compared the effects of impurity ion accumulation on indices such as replacement performance during long-term closed-loop operations and explored potential mitigation strategies in hope that it can provide a set of scientific theories and pratical guidance for gold extraction.

关 键 词：金精矿 氧化渣 环保药剂 氰化浸出 置换 环保浸金 

分 类 号：TF111[冶金工程—冶金物理化学]