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金属矿山 ›› 2014, Vol. 43 ›› Issue (09): 60-63.

• 矿物工程 • 上一篇    下一篇

西北某难选铅锌矿石浮选试验

姜永智1,李国栋1,2   

  1. 1.西北矿冶研究院,甘肃 白银 730900;2.北京科技大学土木与环境工程学院,北京 100083
  • 出版日期:2014-09-15 发布日期:2015-04-15

Flotation Experiments on a Refractory Lead-zinc Ore in Northwestern China

Jiang Yongzhi1,Li Guodong1,2   

  1. 1.Northwest Research Institute of Mining and Metallurgy,Baiyin 730900,China;2.School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China
  • Online:2014-09-15 Published:2015-04-15

摘要: 西北某铅锌矿是一个矿物成分复杂、铅锌矿物分布极不均匀、嵌布粒度细微、嵌布关系复杂、单体解离难度大、脉石矿物硬度高的大型难选铅锌矿床。为确定该资源的开发利用方案,采用优先浮选工艺对该矿石进行了选矿试验。结果表明,在磨矿细度为-0.074 mm占85%的情况下,采用1粗1扫3精选铅(铅精选前再磨至-0.045 mm占95%)、1粗1扫2精选锌、中矿顺序返回的闭路流程处理该矿石,可取得铅品位为60.45%、含锌8.90%、铅回收率为75.95%的铅精矿以及锌品位为51.60%、含铅0.31%、锌回收率为87.39%的锌精矿,该选矿工艺方案是该矿石的高效开发利用方案。

关键词: 铅锌矿, 方铅矿, 闪锌矿, 优先浮选

Abstract: A lead-zinc mine in northwestern China is a large-scale refractory Pb-Zn deposit with characteristics of complex mineral composition,uneven lead-zinc mineral distribution,micro-grained and complex dissemination,difficulty in liberating monomer mineral and hard gangue mineral.In order to determine the utilization scheme about the Pb-Zn deposit,experimental study on the ore is made by adopting the preferential flotation process.The results indicate that under the conditions of grinding fineness of 85% -0.074 mm,lead concentrate with Pb grade of 60.45%,Zn grade of 8.90% and lead recovery of 75.95%,and zinc concentrate with Zn grade of 51.60%,Pb grade of 0.31% and zinc recovery of 87.39% were obtained respectively with closed circuit process of lead concentration by one roughing,one scavenging and three cleaning (regrinding to 95% -0.045 mm before the cleaning),zinc concentration by one roughing,one scavenging and two cleaning process,and middlings returning to the flow-sheet in order.The process is an efficient utilization scheme for this ore.

Key words: Lead-zinc mine, Galena, Sphalerite, Preferential flotation