Separation and Enrichment of Rare Earth Elements in Phosphorite in Xinhua, Zhijin, Guizhou

摘要

The phosphorite ores-deposits rich in rare earth elements (REE) in Zhijin, Xinhua, Guizhuo occurs in the early Cambrian Meishucun and at the bottom part of Qiongzhusi stage (the upper layer of phosphorites), belonging to Yangzi stratum section. The living creature scraps was proved existent in dolomitic-phosphorites by experiments, The REE could be extracted to provide the worthy data for the further using. Adopting the HNO_3 to extract REE, through the ion exchange method, the REE recovery rate could be reached 85.44 % , having certain reference value.