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从铜尾矿中回收铋金属选矿试验.doc


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从铜尾矿中回收铋金属选矿试验
郭锐1,2,刘丹1,2,郭志强1,2,王伊杰1,2,夏节1,2,文书明1,2
(,昆明 650093;,昆明 650093)
摘要:%的铋粗精矿,通过对铋的赋存状态以及显微结构进行分析,发现矿样中的铋以细粒自然铋的形式存在,同时,大量自然铋与其它矿物伴生或包裹,%,属于难选铋。针对该矿石的性质,研究了磨矿细度以及药剂制度对浮选指标的影响,确定了“一次粗选-两次扫选-三次精选”的试验流程,%,%的铋精矿。对精矿进行X射线衍射分析,结果表明:精矿组成复杂,除了自然铋外,还存在包裹铋的其它矿物,这部分矿物以方铅矿为主。
关键词:铋精矿;提质;方铅矿;包裹
中图分类号:TD952 文献标识码:A 文章编号:
Beneficiation test of bismuth metal from copper tailings
GUO Rui1,2,LIU Dan1,2,GUO Zhiqiang 1,2,WANG Yijie1,2,XIA Jie1,2,WEN Shuming1,2
( Key Laboratory plex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China;2. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China)
Abstract: The bismuth concentrate with a grade of only % was obtained by the preliminary enrichment of the tailings after copper separation from copper- bismuth ore. The bismuth in the sample in a form of tiny native bismuth by occurrence state and microstructure analysis, a large number of bismuth about percent, meanwhile, associate with or included in other minerals, this parts bismuth belongs to refractory bismuth. The influence of grinding fineness and regime of agents on flotation indexs were analyzed according to the ore properties, then, a bismuth concentrate with grade is % and recovery is % was obtained by a flotation process including “one stage roughing-two stage scavenging-three stage cleaning”. X-ray diffraction analysis on concentrate shows position of the concentrate is plex, except native bismuth, there are other minerals which contains bismuth, this parts minerals mainly are galena.
Key words: bismuth concentrate;upgrading;galena;inclusion
铋是一种微量元素,独立矿床很少,在地壳中的含量很低,但其应用却很广泛,主要用于制造低熔点合金、冶金添加剂、医药用品、化工用品[1-4]等。铋矿物主要以伴生矿的形式存在于其它金属硫化矿中,%[5-7],尤其是铜矿与铋矿的共伴生,常常导致铜精矿质量不合格,以及铋的损失,中外选矿工作者对铜铋的分离进行了大量的研究,铜铋分离方法有重选法、浮选法和湿法冶

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