Recovery and Separation of Rare-Earth Elements, Barium, and Strontium From Bastnäsite With Sulfuric Acid

Technical Report · Tue Jan 01 04:00:00 EST 1974

DOI:https://doi.org/10.2172/4189304· OSTI ID:4189304

Eisele, J. A. ^[1]; Bauer, D. J. ^[1]

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1. Bureau of Mines, Reno, NV (United States). Reno Metallurgy Research Center

The Bureau of Mines conducted a bench-scale investigation of a concentrated H₂SO₄ reaction for recovering and separating rare-earth elements, barium, and strontium from a bastnäsite ore and byproduct. Barium and strontium were dissolved in the concentrated acid and precipitated as a mixed product by water dilution. Separation of strontium from barium was effected by reaction with Na₂C0₃ solution, followed by a dilute acid leach of the SrCO₃ formed. After removing the barium and strontium from bastnäsite ore, the rare-earth elements were roasted to water-soluble sulfates. The rare-earth sulfate solution was subsequently processed by solvent extraction to produce rare-earth oxides low in lead and magnesium.

• Research Organization: Bureau of Mines, Reno, NV (United States). Reno Metallurgy Research Center
• Sponsoring Organization: US Department of the Interior
• NSA Number: NSA-32-021895
• OSTI ID: 4189304
• Report Number(s): BM-RI--7990
• Country of Publication: United States
• Language: English

Related Subjects

*BARIUM-- SEPARATION PROCESSES
*BASTNAESITE-- ORE PROCESSING
*RARE EARTHS-- SEPARATION PROCESSES
*STRONTIUM-- SEPARATION PROCESSES
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
BY-PRODUCTS
LEACHING
PRECIPITATION
RARE EARTH COMPOUNDS
SODIUM CARBONATES
SOLVENT EXTRACTION
SULFATES
SULFURIC ACID
Separation Procedures