摘要:
某石墨矿原矿样固定碳含量为8.17%,石墨嵌布粒度极细,部分石墨单体粒度小于10μm,属于低品位难选微细鳞片石墨矿.依据矿石性质,进行了详细的条件试验和流程,最终确定合适的选矿工艺流程为“一次粗磨一次粗选一次扫选,粗精矿六次再磨七次精选”的闭路流程.闭路试验最终获得了精矿固定碳含量为85.49%、回收率为86.95%的技术指标,为同类石墨矿资源的合理开发利用提供借鉴.
关键词:
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低品位
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微细鳞片石墨
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再磨
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精选
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中矿
Abstract:
A graphite ore belongs to the low-grade and super-fine flake graphite ore,which contains 8.17% fixed carbon,and the dissemination size of the ore is super fine,some graphite size is even lesser than 10 μm.According to the ore properties a series of conditions test was carried on..And the proper closed Beneficiation process was achieved,which was one roughing grinding,one roughing and one scavenging,then six regrinding and seven cleaning.The results show that finally the graphite concentrate of fixed carbon with the grade of 85.49% and recovery of 86.95 % was achieved through the whole closed-circuit test,which has some reference value for this type of mineral graphite resources utilization.
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