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Title: RECOVERY OF URANIUM FROM LOW GRADE URANIUM BEARING ORES

Abstract

Recovery of U, Fe, and Al from Chattanooga shale is described. Ground shale (-4 to +325 mesh) is roasted to remove organic and volatile matter. The heated shale is then reacted with a chlorinating agent (CCl/sub 4/, COCl/sub 2/, Cl, and SCl) at 600 to 1000 C. The metal chloride vapor is separated from entrained solids and then contacted with a liquid alkali metal chloride which removes U. The U is reeovered by cooling and dissolving the bath followed by acidification and solvent extraction. A condensed phase of Al, Fe, and K chlorides is treated to separate Al as alumina by passing through a Fe/sub 2/O/ sub 3/ bed. The remaining FeCl/sub 3/ is oxidized by O/sub 2/ at 1000 C to form Fe/sub 2/O/sub 3/ and Cl/sub 2/. Alternatively, vapor from the U separation step may be passed to a liquid KCl bath at 500 to 650 C. The resulting mixture is oxidized to form Cl/sub 2/ and Fe/sub 2/O/sub 3/ + Al/sub 2/O/sub 3/. The Al and Fe are separated by reaction with NaOH at high temperatures and pressures. (T.R.H.)

Inventors:
; ;
Issue Date:
OSTI Identifier:
4208498
Patent Number(s):
2890099
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
NSA Number:
NSA-13-021813
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
TECHNOLOGY; ALKALI METALS; ALUMINUM; ALUMINUM CHLORIDES; ALUMINUM OXIDES; CARBON TETRACHLORIDE; CARBONYLS; CHEMICAL REACTIONS; CHLORIDES; CHLORINE; COOLING; HEATING; HIGH TEMPERATURE; IRON; IRON CHLORIDES; IRON OXIDES; LIQUEFYING; LIQUIDS; MIXING; ORGANIC COMPOUNDS; OXIDATION; OXYGEN; PHOSGENE; POTASSIUM CHLORIDES; PRESSURE; RECOVERY; SEPARATION PROCESSES; SODIUM HYDROXIDES; SOLIDS; SOLUTIONS; SOLVENT EXTRACTION; SULFUR CHLORIDES; TEMPERATURE; URANIUM; URANIUM ORES; VAPORS; VOLATILITY

Citation Formats

Rhodes, H B, Pesold, W F, and Hirshon, J M. RECOVERY OF URANIUM FROM LOW GRADE URANIUM BEARING ORES. United States: N. p., 1959. Web.
Rhodes, H B, Pesold, W F, & Hirshon, J M. RECOVERY OF URANIUM FROM LOW GRADE URANIUM BEARING ORES. United States.
Rhodes, H B, Pesold, W F, and Hirshon, J M. Mon . "RECOVERY OF URANIUM FROM LOW GRADE URANIUM BEARING ORES". United States.
@article{osti_4208498,
title = {RECOVERY OF URANIUM FROM LOW GRADE URANIUM BEARING ORES},
author = {Rhodes, H B and Pesold, W F and Hirshon, J M},
abstractNote = {Recovery of U, Fe, and Al from Chattanooga shale is described. Ground shale (-4 to +325 mesh) is roasted to remove organic and volatile matter. The heated shale is then reacted with a chlorinating agent (CCl/sub 4/, COCl/sub 2/, Cl, and SCl) at 600 to 1000 C. The metal chloride vapor is separated from entrained solids and then contacted with a liquid alkali metal chloride which removes U. The U is reeovered by cooling and dissolving the bath followed by acidification and solvent extraction. A condensed phase of Al, Fe, and K chlorides is treated to separate Al as alumina by passing through a Fe/sub 2/O/ sub 3/ bed. The remaining FeCl/sub 3/ is oxidized by O/sub 2/ at 1000 C to form Fe/sub 2/O/sub 3/ and Cl/sub 2/. Alternatively, vapor from the U separation step may be passed to a liquid KCl bath at 500 to 650 C. The resulting mixture is oxidized to form Cl/sub 2/ and Fe/sub 2/O/sub 3/ + Al/sub 2/O/sub 3/. The Al and Fe are separated by reaction with NaOH at high temperatures and pressures. (T.R.H.)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {6}
}