Hide/Show Apps

Recovery of rare earths from a bastnaesite preconcentrate

2000-03-16
Topkaya, Yavuz Ali
Kul, M
Karakaya, I
In this study, a bastnaesite type rare earth ore located in Beylikahir in Turkey was used. The total rare earth oxide (REO) content of the deposit is estimated to be 1 million tons with an average concentration of 3.42%REO. The rare earths are contained in bastnaesite mineral. The other constituents of the ore are calcium fluoride (52.5%), barite (25.4%), calcite (2.8%) and minor amounts of thorium, etc. The bastnaesite mineral occurs either as cement material between fluoride and barite particles or is intimately associated with these minerals. The rare earth elements are enriched considerably in sub-sieve sizes. So, the classical concentration and hydrometallurgical methods mentioned in the literature were not applicable alone for the production of marketable bastnaesite concentrate or other products.