摘要:
某铜矿主要铜矿物以蓝辉铜矿和硫砷铜矿为主,蓝辉铜矿与硫砷铜矿物理化学性质相似,可浮性相近.采用等可浮浮选-铜砷再分离工艺流程,优先获得可浮性较好的铜砷粗精矿,再进行铜砷粗精矿分离浮选,分别获得高砷铜精矿和低砷铜精矿,最后通过扫选获得另一部分低砷铜精矿.研究了磨矿细度,粗选氧化剂用量及铜砷分离氧化剂用量对铜砷分离指标的影响.闭路试验获得含铜21.78%,砷0.43%,铜回收率57.94%,砷回收率20.70%的低砷铜精矿和含铜16.26%,砷1.18%,铜回收率27.21%,砷回收率35.98%的高砷铜精矿.
Abstract:
Digenite and enargite are the main copper minerals of one copper mine.The physical and chemical properties of them are similar and the floatability are nearly same.Iso flotation was adopted to separate the digenite and enargite of the copper mine.The mixed copper and arsenic concentrate with higher floatability was gained preferentially.Then,the mixed copper and arsenic concentrate was tested to separate the copper and the arsenic,Finally,the other part of low arsenic copper concentrate was obtained though scavenger.Grinding fineness,the dosage of oxidizing agent in the rougher stage and in the separation stage were tested to study their effect on the separation of copper and arsenic.Low arsenic copper concentrate was obtained with copper grade of 21.78% and arsenic grade of 0.43%,the recovery of copper and arsenic are 71.42% and 32.04%,respectively.High arsenic copper concentrate was also gained with copper grade of 16.26% and arsenic grade of 1.18%,the recovery of copper and arsenic are 27.21% and 35.98%,respectively.
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