|About this Abstract
||Part C-3: Processing of Critical Metals
||Recovery of Phosphorous and Rare Earth Elements from an Apatite Concentrate
||Mahmood Alemrajabi, Kerstin Forsberg, Åke Rasmuson
|On-Site Speaker (Planned)
When LKAB processes their iron ores in northern Sweden, they obtain apatite as a by-product. The apatite has been recovered by flotation and the concentrate contains about 0.4 wt% rare earth elements (REE). Both phosphate rock and REE are listed as critical raw materials for the European union. In the present project the recovery of REE within the nitrophosphate process of fertilizer production has been studied. In the first stage the REE are precipitated and separated as a phosphate concentrate. For further purification and individual separation of REE by SX, removal of phosphate to enhance the dissolution of REE in mild acidic solutions is essential. In this study, different processes such as alkaline cracking, thermal treatment, re-precipitation and selective dissolution have been applied to introduce an appropriate intermediate product for further individual REE separation.
||Planned: At-meeting proceedings