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Title: Yellowcake processing in uranium recovery

Abstract

This information relates to the recovery of uranium from uranium peroxide yellowcake produced by precipitation with hydrogen peroxide. The yellowcake is calcined at an elevated temperature to effect decomposition of the yellowcake to uranium oxide with the attendant evolution of free oxygen. The calcination step is carried out in the presence of a reducing agent which reacts with the free oxygen, thus retarding the evolution of chlorine gas from sodium chloride in the yellowcake. Suitable reducing agents include ammonia producing compounds such as ammonium carbonate and ammonium bicarbonate. Ammonium carbonate and/or ammonium bicarbonate may be provided in the eluant used to desorb the uranium from an ion exchange column.

Inventors:
Publication Date:
OSTI Identifier:
5859425
Patent Number(s):
US 4293528
Application Number:
TRN: 82-004094
Assignee:
Mobil Corp IFI; EDB-82-046031
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 19 Nov 1979
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; URANIUM; RECOVERY; URANIUM OXIDES U3O8; CALCINATION; AMMONIUM CARBONATES; HYDROGEN PEROXIDE; ION EXCHANGE; LEACHING; OXYGEN; REDUCING AGENTS; SODIUM CHLORIDES; URANIUM ORES; ACTINIDE COMPOUNDS; ACTINIDES; ALKALI METAL COMPOUNDS; AMMONIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATES; CHALCOGENIDES; CHEMICAL REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; DECOMPOSITION; DISSOLUTION; ELEMENTS; HALIDES; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; METALS; NONMETALS; ORES; OXIDES; OXYGEN COMPOUNDS; PEROXIDES; PYROLYSIS; SEPARATION PROCESSES; SODIUM COMPOUNDS; THERMOCHEMICAL PROCESSES; URANIUM COMPOUNDS; URANIUM OXIDES; 050400* - Nuclear Fuels- Feed Processing

Citation Formats

Paul, J.M. Yellowcake processing in uranium recovery. United States: N. p., 1981. Web.
Paul, J.M. Yellowcake processing in uranium recovery. United States.
Paul, J.M. Tue . "Yellowcake processing in uranium recovery". United States.
@article{osti_5859425,
title = {Yellowcake processing in uranium recovery},
author = {Paul, J.M.},
abstractNote = {This information relates to the recovery of uranium from uranium peroxide yellowcake produced by precipitation with hydrogen peroxide. The yellowcake is calcined at an elevated temperature to effect decomposition of the yellowcake to uranium oxide with the attendant evolution of free oxygen. The calcination step is carried out in the presence of a reducing agent which reacts with the free oxygen, thus retarding the evolution of chlorine gas from sodium chloride in the yellowcake. Suitable reducing agents include ammonia producing compounds such as ammonium carbonate and ammonium bicarbonate. Ammonium carbonate and/or ammonium bicarbonate may be provided in the eluant used to desorb the uranium from an ion exchange column.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {10}
}