CAJ | 학술논문

云南某难选铜矿石属低品位高结合率氧化铜矿，采用选冶联合工艺实现了对该铜矿的高效回收．浮选试验研究表明，磨矿细度为－0.074 mm 占80％，调整剂水玻璃用量800 g／t，组合捕收剂丁黄药＋异戊黄（1∶1）用量240 g／t，铜回收指标最佳，经二粗二精闭路试验获得的铜精矿中铜品位9.17％，回收率17.76％．浮选尾矿经磁选除铁，磁选尾矿采用硫酸浸出，当磨矿细度为－0.045 mm 占54％，硫酸用量60 kg／t，液固比3∶1，转速250 r／min，浸出温度45℃，浸出时间2 h 时，铜浸出率为81.88％，铜的综合回收率达86.55％．
운남모난선동광석속저품위고결합솔양화동광，채용선야연합공예실현료대해동광적고효회수．부선시험연구표명，마광세도위－0.074 mm 점80％，조정제수파리용량800 g／t，조합포수제정황약＋이무황（1∶1）용량240 g／t，동회수지표최가，경이조이정폐로시험획득적동정광중동품위9.17％，회수솔17.76％．부선미광경자선제철，자선미광채용류산침출，당마광세도위－0.045 mm 점54％，류산용량60 kg／t，액고비3∶1，전속250 r／min，침출온도45℃，침출시간2 h 시，동침출솔위81.88％，동적종합회수솔체86.55％．
A refractory low-grade oxide copper ore from Yunnan which contains large amounts of combined cop-per is studied.Efficient recovery of copper is obtained by united technology of beneficiation and metallurgy.Flo-tation experiments show that with the grinding fineness of -0.074 mm 80%,the sodium silicate dosage 800 g/t,the combination collector of butyl xanthate and isoamyl xanthate (1 ∶1 )dosage 240 g/t,the optimal copper re-covery and grade of the concentrate are 1 7.76% and 9.1 7%,respectively.Iron in flotation tailings is removed by magnetic separation,and the tailings are leaching with sulfuric acid.The copper leaching rate of 81 .88% is obtained with the grinding fineness of -0.045 mm 54%,the sulfuric acid dosage 60 kg/t,the liquid -solid ra-tio 3∶1 ,the speed 250 r/min,the temperature 45℃,the leaching time 2 h,and the total recovery of copper is 86.55%.