Chloride anion exchange coprocessing for recovery of plutonium from pyrochemical residues and Cs sub 2 PuCl sub 6 filtrate

Technical Report · Fri Dec 07 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6303236· OSTI ID:6303236

Muscatello, A C; Killion, M E

Continuing studies of plutonium recovery from direct oxide reduction (DOR) and electrorefining (ER) pyrochemical process residues show that chloride anion exchange coprocessing is useful and effective. Coprocessing utilizes DOR residue salt as a reagent to supply the bulk of chloride ion needed for the chloride anion exchange process and to improve ER residue salt solubility. ER residue salt and ER scrapeout can be successfully treated, either alone or together, using coprocessing. In addition, chloride anion exchange at 2.0M acidity results in improved process performance by greatly reducing disproportionation of plutonium(IV), eliminating restrictions on oxidation time compared to operation at 1.0M acidity. Laboratory-scale experiments show that below-discard effluent plutonium losses are obtained. Resin capacity was 30 g Pu/{ell} or greater. Furthermore, it is feasible to perform chloride anion exchange recovery of plutonium from filtrate resulting from precipitation of dicesium hexachloroplutonate (Cs{sub 2}PuCl{sub 6}, an oxidant salt to be used in the molten salt extraction process) and integration of its preparation with recovery of DOR salts. 10 refs., 9 figs., 10 tabs.

• Research Organization: EG and G Rocky Flats, Inc., Golden, CO (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC34-90DP62349
• OSTI ID: 6303236
• Report Number(s): RFP-4325; ON: DE91006612
• Country of Publication: United States
• Language: English

Related Subjects

050800* -- Nuclear Fuels-- Spent Fuels Reprocessing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDE COMPOUNDS
ACTINIDES
ALKALI METAL COMPOUNDS
ANIONS
CESIUM CHLORIDES
CESIUM COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
ELECTROLYSIS
ELECTROREFINING
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
ION EXCHANGE
IONS
LYSIS
METALS
OXIDES
OXYGEN COMPOUNDS
PLUTONIUM
PLUTONIUM CHLORIDES
PLUTONIUM COMPOUNDS
PROCESSING
PYROCHEMICAL REPROCESSING
REDUCTION
REFINING
REPROCESSING
SEPARATION PROCESSES
TRANSURANIUM COMPOUNDS
TRANSURANIUM ELEMENTS