Leaching of rare earth elements from waste lamp phosphor mixtures by reduced alkali fusion followed by acid leaching
作者: Yong LiangYuanxin LiuRudan LinDoudou GuoChunfa Liao
作者单位: 1School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
2Engineering Research Center of High-Efficiency Development and Application Technology of Tungsten Resources, Ministry of Education, Ganzhou 341000, Jiangxi, China
3Information Engineering Institute of Gannan Medical College, Ganzhou 341000, Jiangxi, China
刊名: Hydrometallurgy, 2016, Vol.163 , pp.99-103
来源数据库: Elsevier Journal
DOI: 10.1016/j.hydromet.2016.03.020
关键词: Waste rare earth phosphorReductive iron powderAlkali fusionHydrochloric acidLeaching
英文摘要: Abstract(#br)Because of the complex crystal structures of the blue powder and green powder in waste rare earth phosphor powder and the relative high content of Ce and Tb, efficient extraction of rare earth elements (REEs) is difficult. The highest leaching efficiency of REEs is only about 90% with present processes, and utilization of the REEs is low. To improve the leaching efficiency of waste rare earth phosphor, a novel process of reduced alkali fusion followed by acid leaching to recover REEs from waste phosphor powder is proposed. Under the conditions of mass ratio of reductive iron powder to waste rare earth phosphor of 1:200, alkali to phosphor mass ratio of 2:1, alkali fusion temperature of 700°C, alkali fusion time of 3h, hydrochloric acid...
全文获取路径: Elsevier  (合作)
影响因子:2.169 (2012)

  • phosphor 荧光体
  • fusion 融解
  • mixtures 混合料
  • waste 岩屑
  • reduced 减缩的
  • leaching 淋滤
  • earth 地球
  • elements 初步
  • alkali 
  • powder 粉末