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金属矿山 ›› 2015, Vol. 44 ›› Issue (10): 71-75.

• 矿物工程 • 上一篇    下一篇

提高辽宁某钨选厂钨精矿品位试验

马龙秋,郭春雷   

  1. 东北大学资源与土木工程学院,辽宁 沈阳 110819  
  • 出版日期:2015-10-15 发布日期:2015-11-20

Experimental Study on Improving the Grade of Tungsten Concentrate from a Tungsten Plant in Liaoning

Ma Longqiu,Guo Chunlei   

  1. School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China
  • Online:2015-10-15 Published:2015-11-20

摘要: 辽宁某钨选厂矿石中WO3的品位为0.79%,在黑钨矿中的分布率为78.48%。现场采用单一重选工艺,仅能获得WO3品位22%~23%、回收率88%~89%的重选精矿。为提高精矿指标,对重选精矿进行了磁选—浮选—浸出试验。结果表明:重选精矿在磁场强度为80 kA/m条件下磁选除铁,可获得WO3品位为23.54%的磁选精矿;磁选精矿以丁基黄药为捕收剂进行反浮选,获得WO3品位为53.08%的反浮选精矿;反浮选精矿以盐酸为浸出剂进行浸出除杂,可获得WO3品位为65.11%、作业回收率为96.71%、对原矿回收率为82.42%的精矿,实现了该钨矿资源的有效回收。

关键词: 钨矿石, 磁选, 浮选, 化学浸出

Abstract: School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China There is 0.79% WO3 in a tungsten ore in Liaoning Province.Distribution rate of tungsten in wolframite is 78.48%.Gravity separation operation was used by on-sits process,and gravity concentrate index with WO3 grade of only 22%~23% and recovery of 88%~89% is obtained.To improving the concentrate index,magnetic separation-flotation-leaching experiments on the gravity concentrate was conducted.Results show that magnetic concentrate with WO3 grade of 23.54% is obtained via magnetic separation for iron removal at field intensity of 80 kA/m on the gravity concentrate,reverse flotation concentrate with WO3 grade of 53.08% is gained through reverse flotation on the magnetic concentrate using butyl xanthate as collector,concentrate with WO3 grade of 65.11%,yield recovery rate of 96.71% and total recovery rate of 82.42% is obtained by purification via leaching with hydrochloric acid as leaching agent.The effective recovery of the tungsten resource is obtained.

Key words: Tungsten ore, Magnetic separation, Flotation, Chemical leaching