西南地区某铅锌矿重介质-浮选联合工艺分选试验研究
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摘要
我国西南地区某铅锌矿石含Zn 14.28%,含Pb0.44%。为提高选厂处理量,采用"重介质-浮选联合"流程,结果表明,1～13mm原矿经重介质预先富集,可以丢弃产率39.38%,含Zn 0.97%,含Pb 0.061%的尾矿。重介质分选精矿和0～1mm原矿合并经磨矿浮选得到的最终精矿指标为:Zn品位58.53%,Zn回收率94.68%,Pb品位1.65%;Pb回收率83.95%;Ag品位220.88g/t;Ag回收率91.52%。
A lead-zinc ore in southwest China contains 14.28%of Zn and 0.44%of Pb.In order to improve the handling capacity of the concentrator,a heavy medium-flotation combined process was adopted.The results showed that the tailings with yield of39.38%,Zn of 0.97% and Pb of 0.061% could be discarded after pre-enrichment on 1～13 mm raw ore by heavy medium process.The concentrate obtained from heavy medium separation and 0～1 mm raw ore were mixed for grinding and flotation.And the final concentrate indexes were achieved as follows:Zn grade of 58.53%,Zn recovery of 94.68%,Pb grade of 1.65%,Pb recovery of 83.95%,Ag grade of 220.88 g/t and Ag recovery of 91.52%.
A lead-zinc ore in southwest China contains 14.28%of Zn and 0.44%of Pb.In order to improve the handling capacity of the concentrator,a heavy medium-flotation combined process was adopted.The results showed that the tailings with yield of39.38%,Zn of 0.97% and Pb of 0.061% could be discarded after pre-enrichment on 1～13 mm raw ore by heavy medium process.The concentrate obtained from heavy medium separation and 0～1 mm raw ore were mixed for grinding and flotation.And the final concentrate indexes were achieved as follows:Zn grade of 58.53%,Zn recovery of 94.68%,Pb grade of 1.65%,Pb recovery of 83.95%,Ag grade of 220.88 g/t and Ag recovery of 91.52%.
引文
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[3]乔吉波,简胜,王少东,等.建水某铅锌矿选矿工艺研究[J].矿冶工程,2012,32(4):51-55.
[4]罗新民,田松鹤.某铅锌矿重介质旋流器选矿工艺研究[J].湖南有色金属,2004(4):7-10.
[5]陈岳麓,罗新民.水口山铅锌矿重介质旋流器选矿半工业试验研究[J].有色金属(选矿部分),1988(2):22-27+5.
[6]龙卫刚,冯富斌.某铅锌矿重介质分选扩大试验工艺研究[J].云南冶金,2016,45(5):30-34.
[7]叶亚超.重介质旋流器分选效果影响因素分析[J].内蒙古煤炭经济,2018(9):57-58.
[8]张秀梅,孙娜,陈国玉,等.重介质旋流器分选效果与入选原煤粒度组成的关系研究[J].煤炭加工与综合利用,2015(9):18-20.