旋流-静态微泡浮选柱强化回收微细粒黑钨矿

来源期刊:中南大学学报(自然科学版)2015年第11期

论文作者:刘炯天 艾光华 曹亦俊 李小兵

文章页码:3983 - 3991

关键词:微细粒黑钨矿;旋流-静态微泡浮选柱;强化回收;短流程;浮选

Key words:fine wolframite; cyclonic-static microbubble flotation column; strengthen recovery; short flowsheet; flotation

摘    要:针对微细粒黑钨矿中钨难回收、工艺流程长、回收率低的问题,应用高效的微细粒分选设备旋流-静态微泡浮选柱强化回收某含钨多金属矿中的微细粒黑钨矿,考察处理量、药剂制度、循环泵工作压力和充气量等对浮选指标的影响,并优化相应的工艺条件和操作参数,在此基础上进行短流程连选试验。研究结果表明:采用浮选柱“一粗二精”流程代替浮选机“一粗三精五扫”工艺流程,可以获得WO3质量分数为42.34%及钨回收率为84.68%的黑钨精矿,比浮选机流程获得的精矿质量分数提高10.43%,回收率提高2.15%,实现了微细粒黑钨矿柱式短流程的高效分选。

Abstract: To solve the problems of difficult recycle of tungsten, long flow and low recovery in wolframite flotation separation, an efficient fine particle separation machine, with cyclonic-static microbubble flotation column was used to strengthen the recovery of fine wolframite from a tungsten polymetallic ore. The effects of processing capacity, reagent system, circulation pump working pressure and aeration rate on the flotation index were investigated, and the corresponding conditions and operating parameters of the process were optimized followed by the short flow continuous separation tests. The results show that replacing “one-stage rough, three-stage cleaning and five-stage scavenging” with flotation machine by the “one-stage scavenging and two-stage cleaning” with flotation column, a wolframite mass fraction of 42.34% with WO3 recovery of 84.68% can be obtained. Compared with the wolframite mass fraction of the process using traditional flotation, the wolframite mass fraction of flotation column process increases by 10.43%, and the recovery increases by 2.15%. Efficient separation of fine grained wolframite via columns in short process is finally achieved.

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