摘要
云南某难选铜矿石属于低品位高结合率氧化铜矿,采用选冶联合工艺实现该铜矿的高效回收。研究结果表明:磨矿粒度<0.074 mm的颗粒占80%(质量分数),调整剂水玻璃用量为600 g/t,组合捕收剂丁黄药+异戊基黄药用量(质量比1:1)为260 g/t,铜回收指标最佳,经2次粗选、1次扫选、3次精选闭路试验获得的铜精矿中铜品位(质量分数)为12.89%,回收率(质量分数)42.78%。浮选尾矿用硫酸浸出,当磨矿粒度<0.045 mm的颗粒占80%(质量分数)、硫酸用量为15 kg/t、液固质量比2:1、转速为200 r/min、浸出时间为2 h时,铜浸出率(质量分数)为91.52%,铜的综合回收率达95.15%。
A refractory low-grade oxide copper ore in Yunnan which contains large amounts of combined copper was studied using united technology of flotation and hydrometallurgy. Flotation experiments results show that a maximum copper recovery and grade of mass fraction of 42.78% and 12.89% are obtained with the grinding fineness of particles mass fraction of 80% particle size less than 0.074 μm, the sodium silicate dosage 600 g/t, the mixed collector of butyl xanthate and isoamyl xanthate（mass ratio 1：1） dosage 260 g/t. The copper in flotation tailings is leaching with sulfuric acid. The copper extraction of 91.52% is obtained with the grinding fineness of particles mass fraction of 80% particle size less than 0.045 μm, the sulfuric acid dosage 15 kg/t, the liquid-solid mass ratio 2：1, the speed 200 r/min, the leaching time 2 h. The total recovery of copper is 95.15% using united technology of beneficiation and metallurgy.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第8期2550-2555,共6页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(51104077)
云南省应用基础研究基金资助项目(2010ZC022)~~
关键词
氧化铜矿
选冶联合流程
浮选
浸出
copper oxide ore
united technology of beneficiation and metallurgy
flotation
leaching
