TITLE:
Phosphogypsum Processing for Rare Earths Recovery—A Review
AUTHORS:
Xiaosheng Yang, Dandara Salvador, Hannu Tapani Makkonen, Lassi Pakkanen
KEYWORDS:
Phosphogypsum, Rare Earth Elements, Phases of Rare Earth Elements, Acid Leaching
JOURNAL NAME:
Natural Resources,
Vol.10 No.9,
September
11,
2019
ABSTRACT: As a by-product from the phosphate fertilizer
industry Phosphogypsum (PG) was considered a
potentially valuable source of the rare earth elements (REEs). Because
of trace concentration of REEs in the PG (normally 2SO4, HCl and HNO3, and
organic chemicals, the effects of mechanical treatment of PG by microwaving and
grinding on leaching efficiency of REEs, and resin-in-leach process were
reviewed in the paper.