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含金酸渣硫脲体系清洁浸金研究
- 作者：
- 陈汝璨|郭学益|张磊|雷勋惠|段小阳|秦红
- 作者单位：
- 中南大学冶金与环境学院&中南大学资源循环研究院|中南大学冶金与环境学院&中南大学资源循环研究院|中南大学冶金与环境学院&中南大学资源循环研究院|中南大学冶金与环境学院&中南大学资源循环研究院|中南大学冶金与环境学院&中南大学资源循环研究院|中南大学冶金与环境学院&中南大学资源循环研究院
基金项目：
- 国家重点研发计划专项(2019YFC1907400)
详细信息：
- 作者简介：
- 陈汝璨（2000—），男，硕士研究生，研究方向为金清洁提取；E-mail：chen_rc@csu.edu.cn
- 通讯作者：
- 张磊（1991—），男，博士，研究方向为金清洁提取及含砷固废无害化处理；E-mail：zhang_lei@csu.edu.cn
- PDF下载
Research of the clean gold leaching in a gold-bearing acid residue thiourea system
- English Author：
- School of Metallurgy and Environment,Central South University&Research Institute of Resource Recycling,Central South University|School of Metallurgy and Environment,Central South University&Research Institute of Resource Recycling,Central South University|School of Metallurgy and Environment,Central South University&Research Institute of Resource Recycling,Central South University|School of Metallurgy and Environment,Central South University&Research Institute of Resource Recycling,Central South University|School of Metallurgy and Environment,Central South University&Research Institute of Resource Recycling,Central South University|School of Metallurgy and Environment,Central South University&Research Institute of Resource Recycling,Central South University
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
黄金具有重要战略意义和经济价值，目前工业上主要采用氰化法提金，但氰化法生产周期长，所用氰化物剧毒，若管理不善，存在潜在环境污染风险。以某黄金冶炼厂含金酸渣为研究对象，进行了硫脲体系浸金研究。结果表明：在常规强化搅拌硫脲浸出条件下，含金酸渣金浸出率仅83.17 %；在超细磨强化硫脲浸出条件下，含金酸渣金浸出率达89 %；推荐最优试验方案为强化搅拌浸出＋一段超细磨浸出一次＋二段超细磨浸出三次＋强化搅拌浸出，该方案含金酸渣金浸出率达95.04 %，可实现含金酸渣中金的清洁深度提取，为非氰提金工艺工业化应用提供理论和技术支持。
关键词:
含金酸渣；硫脲；超细磨；湿法冶金；清洁浸金
Abstract:
Gold has important strategic significance and economic value.At present,cyanidation is mainly used to extract gold in the industry.However,cyanidation has a long production cycle and the cyanide used is highly toxic.If it is not well managed,there will be potential environmental pollution risks.Taking the gold-bearing acid residue of a gold smelter as the research object,the leaching of gold in a thiourea system was studied.The results show that the leaching rate of gold from gold-bearing acid residue is only 83.17 % under the condition of conventional intensified stirring thiourea leaching.Under the condition of ultra-fine grinding to enhance thiourea leaching,the gold leaching rate of gold-bearing acid residue reaches 89 %;it is recommended that the best experimental scheme is enhanced stirring leaching＋one stage ultra-fine grinding leaching＋two stage ultra-fine grinding leaching for three times＋enhanced stirring leaching.The leaching rate of gold from gold-bearing acid residue can reach 95.04 %,which can realize the clean and deep extraction of gold from gold-bearing acid residue and provide theoretical and technical support for the industrial application of the non-cyanide gold extraction process.
Keywords:
gold-bearing acid residue;thiourea;ultra-fine grinding;hydrometallurgy;clean gold leaching
