黄铁矿烧渣水洗液中Cu2+和Au的综合回收试验分析
The analysis of comprehensive recovery experiments of Cu2+and Au in the pyrite cinder washing solution
张群丽 1谢海云 2朱坤 3晋艳玲 1陈家灵 1宋紫欣 1刘殿文2
作者信息
- 1. 昆明理工大学国土资源工程学院,云南昆明 650093
- 2. 昆明理工大学国土资源工程学院,云南昆明 650093;云南省战略金属矿产资源绿色分离与富集重点实验室,云南昆明 650093
- 3. 昆明理工大学冶金与能源工程学院,云南昆明 650093;云南黄金集团巍山县扎村金矿有限责任公司,云南大理 671000
- 折叠
摘要
云南某黄金冶炼厂黄铁矿烧渣水洗液日产量大,含有价的Au和Cu2+,采用铁粉置换联合微孔截金的新工艺回收水洗液中的Cu2+和Au,具有巨大的经济价值和环境效益.本文研究了铁粉置换时pH值、铁粉用量和置换时间等因素对Cu2+、Au回收率的影响,探究了在微孔过滤中微孔粒径的大小(2μm、1μm、＜1μm)对颗粒金回收的影响.试验结果表明pH值为3、铁粉用量6g/L、反应时间2.5 h的条件下,水洗液中Cu2+的置换率达到98.88％,置换效果较好,微孔粒径＜1 μm时,金的回收率达到99.47％.铁粉置换联合微孔截金新工艺对Cu2+和Au的回收率较高,具有物料消耗小、成本低等优点,经济效益明显.
Abstract
The daily output of pyrite cinder washing solution,which contains valuable Au and Cu2+,in a gold smelter in Yunnan is vey large.The recovery of Cu2+and Au from the washing solution of pyrite cinder by using a new technique of iron powder replacement combined with microporous gold interception has great economic value and environmental benefits.In this paper,we have studied the effects of pH value,iron powder dosage,and replacement time on the recovery rate of Cu2+and Au from the washing solution of pyrite cinder in the iron powder replacement process,and explored the effects of micropore size(2μm,1 μm,＜1 μm)on the interception and retention of gold particles in the microporous filtration process.The experimental results show that the replacement rate of Cu2+in the washing solution of pyrite cinder was 98.88％under the conditions of pH value of 3,iron powder dosage of 6g/L,and reaction time of 2.5h.The replacement effect is excellent.When the pore size is less than 1μm,the recovery rate of Au was 99.47％.The new technique of iron powder replacement combined with microporous gold interception has advantages of high recovery rate,low material consumption,low cost and obvious economic benefits for recovering Cu2+and Au from the washing solution of pyrite cinder.
关键词
黄铁矿烧渣/水洗液/铁粉/微孔过滤Key words
Pyrite cinder/washing solution/iron powder/microporous filtration引用本文复制引用
基金项目
国家自然科学基金(52064027)
云南省科技重大专项(202202AG050015)
出版年
2024
NETL
NSTL
万方数据