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金属矿山 ›› 2016, Vol. 45 ›› Issue (03): 176-179.

• 综合利用 • 上一篇    下一篇

包钢稀土尾矿中稀土矿物的浮选再回收

张悦1,2,林海1,2,董颖博1,2,李国栋1,2,王鑫1,2,许晓芳1,2   

  1. 1.北京科技大学土木与环境工程学院,北京 100083;2.金属矿山高效开采与安全教育部重点实验室,北京 100083
  • 出版日期:2016-03-15 发布日期:2016-05-17
  • 基金资助:

    * 国家高技术研究发展计划(863计划)项目(编号:2012AA062402)。

Flotation Recovery of Rare Earth Minerals in Baotou Steel Rare Earth Tailings

Zhang Yue1,2,Lin Hai1,2,Dong Yingbo1,2,Li Guodong1,2,Wang Xin1,2,Xu Xiaofang1,2   

  1. 1.School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China;2.Key Laboratory of High-Efficient Mining and Safety of Metal Mines,Ministry of Education,Beijing 100083,China
  • Online:2016-03-15 Published:2016-05-17

摘要: 包钢稀土尾矿中的稀土矿物有较高的再回收价值。对-74 μm粒级产率为77.73%、REO品位为5.97%、主要稀土矿物氟碳铈矿和独居石含量分别达4.10%和3.80%的包钢稀土尾矿试样进行了浮选再选试验。结果表明,在磨矿细度为-74 μm占95%,粗选矿浆浓度为40%,矿浆温度为30 ℃,粗选NaOH用量为3 000 g/t,水玻璃用量为2 000 g/t,H205+LD用量为400+300 g/t情况下,采用1粗3精2扫、中矿顺序返回流程处理试样,获得了REO品位为45.08%、REO回收率为75.27%的稀土精矿。

关键词: 稀土尾矿, 浮选, 再回收

Abstract: The rare earth minerals in Baotou Steel rare earth tailings have great value.The yield of -74 μm of tailings is 77.73%.REO content of tailings is 5.97%.The main rare earth minerals are bastnaesite and monazite,the content of which are 4.40% and 3.80% respectively.Reconcentration by flotation experiments on the tailings were carried out.The results indicated that,under conditions of the grinding size of 95% passing 74 μm,pulp concentration of 40% and pulp temperature at 30 ℃,NaOH dosage of 3 000 g/t,silicate sodium dosage of 2 000 g/t,H205+LD dosage of 400+300 g/t,rare earth concentrate was obtained by using process of one roughing,three cleaning,one scavenging,and middles back to the flowsheet in turn.The final concentrate REO grade is 45.08% and recovery is 75.27%.

Key words: Rare earth tailing, Flotation, Recovery