Extraction and erichment of cerium from monazite mineral sand.

  • Phạm Văn Hai


In this paper, a synergistic extraction effect that is based on the mixture of triizoamylphosphate (TiAP) and 2-ethylhexyl 2-ethylhexyl phosphonic acid (PC88A) using petroleum as diluent is applied to effectively extract and purify cerium flom monazite mineral sand ore located in Nuithanh District, Quangnam Province. Rare earths in monazite are extracted and scrubbed from the organic phase with 6M HNOj. After that cerium is separated flom the rare earths at the purify of 99.05% by the use of the reduction agent of 10% H2O2, and 2 stages of scrubbing with 6 M HNO3-

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