Przemysl Chemiczny, Vol.97, No.11, 1916-1920, 2018
The conception of recovery of rare earth elements from acid mine waters by sequential precipitation
Rare earth elements (REE) were recoverd from acid mine water by pptn. of REE hydroxides and oxalates and their thermal decompn. to a product contg. 95% REE (calcd. as oxides). The economic anal. of the process showed a close relationship between the profitability of the process and the concn. of REE in mine water.