硫精矿提质及浮选回收锌的选矿工艺研究
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摘要
为提高硫精矿品质及综合回收锌资源,进行了详细的选矿试验研究。针对某矿样中矿物嵌布粒度细的特性,采用抑硫混浮铅锌的优先浮选工艺流程。在条件试验的基础上,进行了矿样一次磨细入选及不磨矿-粗精矿再磨再选两个不同条件优先浮选工艺的闭路试验,试验均获得了较好的选矿指标。对比两种工艺流程结果,确定了最佳的工艺流程,最终可以得到锌品位40.99%、锌回收率72.72%的锌精矿,并且使硫精矿的锌+铅含量降低至1.00%。不仅提高了硫精矿品质,而且实现了锌的二次综合利用,提高资源综合利用水平。
In order to improve the quality of sulfur concentrate and comprehensive recovery of zinc resources,a detailed beneficiation test was carried out.In view of the fine particle size of minerals embedded in a certain ore sample,the preferential flotation process of sulfur suppression and mixed flotation of lead and zinc was adopted.On the basis of conditional tests,closed-circuit tests of two different preferential flotation processes were carried out,namely,one-time grinding and fine separation of ore samples and non-grinding,rough concentrate re-grinding and re-separation.And good beneficiation indexes were obtained in both processes.By comparing the results of the two processes,the optimum process was determined.Finally,a zinc concentrate with zinc grade of 40.99% and zinc recovery of 72.72%could be obtained.The quality of sulfur concentrate could be improved and zinc+lead contents were reduced to 1.00%.The study not only improved the quality of sulfur concentrate,but also realized the secondary comprehensive utilization of zinc and improved the comprehensive utilization level of resources.
In order to improve the quality of sulfur concentrate and comprehensive recovery of zinc resources,a detailed beneficiation test was carried out.In view of the fine particle size of minerals embedded in a certain ore sample,the preferential flotation process of sulfur suppression and mixed flotation of lead and zinc was adopted.On the basis of conditional tests,closed-circuit tests of two different preferential flotation processes were carried out,namely,one-time grinding and fine separation of ore samples and non-grinding,rough concentrate re-grinding and re-separation.And good beneficiation indexes were obtained in both processes.By comparing the results of the two processes,the optimum process was determined.Finally,a zinc concentrate with zinc grade of 40.99% and zinc recovery of 72.72%could be obtained.The quality of sulfur concentrate could be improved and zinc+lead contents were reduced to 1.00%.The study not only improved the quality of sulfur concentrate,but also realized the secondary comprehensive utilization of zinc and improved the comprehensive utilization level of resources.
引文
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[2]李旺旺,毕亚凡,孙侃.硫铁矿制酸过程的废稀酸中砷及重金属去除研究[J].工业用水与废水,2015,46(1):32-35+43.
[3]周怡玫,官长平,汤小军.综合回收硫精矿中铅锌银选矿工艺研究[J].有色金属(选矿部分),2012(4):33-36.
[4]陆智,程秦豫,莫长翼.新型无氰抑制剂在锌硫分离过程中的应用[J].有色金属(选矿部分),2016(5):92-96.
[5]刘玫华,梁溢强,张旭东,等.云南某铅锌多金属矿选矿试验研究[J].金属矿山,2011(9):101-106.
[6]黄万抚,陈园园,文金磊,等.某低品位富银铅锌矿选矿试验研究[J].矿业研究与开发,2014,34(2):45-49.
[7]欧也斐.康家湾矿硫精矿提质试验[J].有色金属(选矿部分),2016(3):52-55.
[8]林榜立,陈良,阙绍娟.新型无毒有机抑制剂FY02的应用研究[J].矿业研究与开发,2016,36(2):16-19.