METHOD OF PROCESSING MONAZITE SAND

Patent · Tue Oct 29 00:00:00 EST 1957

OSTI ID:4337220

Calkins, G D

A method is given for the pretreatment of monazite sand with sodium hydroxide. When momazite sand is reacted with sodium hydroxide, the thorium, uranium, and rare earths are converted to water-insoluble hydrous oxides; but in the case of uranium, the precipitate compound may at least partly consist of a slightly soluble uranate. According to the patent, monazite sand is treated with an excess of aqueous sodium hydroxide solution, and the insoluble compounds of thorium, uranium, and the rare earths are separated from the aqueous solution. This solution is then concentrated causing sodium phosphate to crystallize out. The crystals are removed from the remaining solution, and the solution is recycled for reaction with a mew supply of momazite sand.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-12-004597
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 2811411
• OSTI ID: 4337220
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-58
• Country of Publication: United States
• Language: English

Related Subjects

PATENTS
ANGULAR DISTRIBUTION
CROSS SECTIONS
CRYSTALLIZATION
D-WAVE
ELEMENTARY PARTICLES
ENERGY RANGE
ENRICHMENT
ERRORS
FIELD THEORY
HYDROGEN
LIQUIDS
MEASURED VALUES
MONAZITES
OXIDES
PATENT
PHASE SHIFT
PIONS
PROTONS
QUANTUM MECHANICS
RARE EARTHS
SAND
SCATTERING
SCINTILLATION COUNTERS
SEPARATION PROCESSES
SODIUM HYDROXIDES
SODIUM PHOSPHATES
SOLUTIONS
TARGETS
THORIUM
URANATES
URANIUM
WATER