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Title: SULPHUR DIOXIDE LEACHING OF URANIUM CONTAINING MATERIAL

Abstract

A process is described for extracting uranlum from uranium containing material, such as a low grade pitchblende ore, or mill taillngs, where at least part of the uraniunn is in the +4 oxidation state. After comminuting and magnetically removing any entrained lron particles the general material is made up as an aqueous slurry containing added ferric and manganese salts and treated with sulfur dioxide and aeration to an extent sufficient to form a proportion of oxysulfur acids to give a pH of about 1 to 2 but insufficient to cause excessive removal of the sulfur dioxide gas. After separating from the solids, the leach solution is adjusted to a pH of about 1.25, then treated with metallic iron in the presence of a precipitant such as a soluble phosphate, arsonate, or fluoride.

Inventors:
; ; ;
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4296250
Patent Number(s):
US 2863716
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-13-008418
NSA Number:
NSA-13-008418
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
PATENTS; ACIDITY; ACIDS; AIR; FLUORIDES; GASES; IRON; IRON COMPOUNDS; LEACHING; MAGNETIC FIELDS; MANGANESE COMPOUNDS; MOTION; ORE PROCESSING; PARTICLES; PHOSPHATES; PITCHBLENDE; PRECIPITATION; SALTS; SEPARATION PROCESSES; SLURRIES; SOLIDS; SOLUBILITY; SOLVENT EXTRACTION; SULFUR OXIDES; URANINITES; URANIUM; URANIUM MINERALS; URANIUM ORES; WATER

Citation Formats

Thunaes, A., Rabbits, F.T., Hester, K.D., and Smith, H.W. SULPHUR DIOXIDE LEACHING OF URANIUM CONTAINING MATERIAL. United States: N. p., 1958. Web.
Thunaes, A., Rabbits, F.T., Hester, K.D., & Smith, H.W. SULPHUR DIOXIDE LEACHING OF URANIUM CONTAINING MATERIAL. United States.
Thunaes, A., Rabbits, F.T., Hester, K.D., and Smith, H.W. Mon . "SULPHUR DIOXIDE LEACHING OF URANIUM CONTAINING MATERIAL". United States. doi:.
@article{osti_4296250,
title = {SULPHUR DIOXIDE LEACHING OF URANIUM CONTAINING MATERIAL},
author = {Thunaes, A. and Rabbits, F.T. and Hester, K.D. and Smith, H.W.},
abstractNote = {A process is described for extracting uranlum from uranium containing material, such as a low grade pitchblende ore, or mill taillngs, where at least part of the uraniunn is in the +4 oxidation state. After comminuting and magnetically removing any entrained lron particles the general material is made up as an aqueous slurry containing added ferric and manganese salts and treated with sulfur dioxide and aeration to an extent sufficient to form a proportion of oxysulfur acids to give a pH of about 1 to 2 but insufficient to cause excessive removal of the sulfur dioxide gas. After separating from the solids, the leach solution is adjusted to a pH of about 1.25, then treated with metallic iron in the presence of a precipitant such as a soluble phosphate, arsonate, or fluoride.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Dec 01 00:00:00 EST 1958},
month = {Mon Dec 01 00:00:00 EST 1958}
}