METHOD OF PROCESSING MONAZITE SAND
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Originating Research Org. not identified
- OSTI Identifier:
- 4337220
- Patent Number(s):
- 2811411
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
- NSA Number:
- NSA-12-004597
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-58
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 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
Citation Formats
Calkins, G D. METHOD OF PROCESSING MONAZITE SAND. United States: N. p., 1957.
Web.
Calkins, G D. METHOD OF PROCESSING MONAZITE SAND. United States.
Calkins, G D. Tue .
"METHOD OF PROCESSING MONAZITE SAND". United States.
@article{osti_4337220,
title = {METHOD OF PROCESSING MONAZITE SAND},
author = {Calkins, G D},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 29 00:00:00 EST 1957},
month = {Tue Oct 29 00:00:00 EST 1957}
}