Ultrasound-assisted leaching of rare earths from the weathered crust elution-deposited ore using magnesium sulfate without ammonia-nitrogen pollution
作者: Shaohua YinJiannan PeiFeng JiangShiwei LiJinhui PengLibo ZhangShaohua JuChandrasekar Srinivasakannan
作者单位: 1Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
2Chemical Engineering Program, The Petroleum Institute, Abu Dhabi, P.O. Box 253, United Arab Emirates
刊名: Ultrasonics - Sonochemistry, 2018, Vol.41 , pp.156-162
来源数据库: Elsevier Journal
DOI: 10.1016/j.ultsonch.2017.09.028
关键词: Rare earthsLeachingMgSO 4Ultrasound leaching
英文摘要: Abstract(#br)The in situ leaching process of China's unique ion-adsorption rare earth ores has caused severe environmental damages due to the use of (NH 4 ) 2 SO 4 solution. This study reports that magnesium sulfate (MgSO 4 ) as a leaching agent would replace (NH 4 ) 2 SO 4 by ultrasonically assisted leaching to deal with the ammonia-nitrogen pollution problem and enhance leaching process. At leaching conditions of 3wt% MgSO 4 concentration, 3:1L/S ratio and 30min, the total rare earth leaching efficiency reaches 75.5%. Ultrasound-assisted leaching experiments show that the leaching efficiency of rare earths is substantially increased by introducing ultrasound, and nearly completely leached out after two stage leaching process....
全文获取路径: Elsevier  (合作)
影响因子:3.516 (2012)

  • ammonia 
  • nitrogen 
  • leaching 淋滤
  • assisted 辅助的
  • sulfate 硫酸盐
  • pollution 污染
  • crust 外壳
  • magnesium 
  • weathered 风化的
  • elution 洗提