The 1a Hybrid Flowsheet

Abstract

Contract No. W-31-109 Eng"-52 LEGAL NOTICEpvvpuwl aa aa accooitt at Oovammaat aponaorwl work. Naltbar tha Uoltod CaamUaloa, aor aar paraoa actlof M bahalf of tha Coaunlsaloii: aagrwarnHrtr»'rapr»aantatlott,ex^«aa«dor impUad. with raapoct to tha accuor naaMaaaa (rf tha Infemutloa coolaload la Ihla raport. or Oat tha uaa apvaraiu. Batfeed, or procaaa dlaeloawl la tUa rapert aiay oat li>£rii«a iteior a«)r UaMUtloa wHk raapaet to tha u»a of. or tor daiaacaa raaolttnc from tha ' taferaatUa. spparatua, nathod, or procaaa dlaeloaad In thla raport. M« t> tha abon. "parwn acUag on bahalf of tha Conmtaakm-(Acludaa aaj meoatractor at Oa Coaunlaatoa, or am^oyaa of auch contractor, to tha axtont that OT of tha OoauaiaaloB. or aatiAoyaa of auch coatractor preparaa. or provldaa acoaaa to, any talariBatloa poraaaat to hla amployuant or contract OoMMtaaton. or hla amplayaMat with a«icb extractor.

Solvent Extraction Recovery and Purification of Strontium-90

“…Dilution with an inert kerosine-type hydrocarbon such as Shell spray base was necessary to improve hydraulic properties of the solvent in the sieve-plate pulse columns of the HSW. TBP was added to the solvent to promote solubility of the extracted cations in the organic phase (7). Stock solutions of 1.3AÍ NadEDTA and 1.05AÍ Na5DTPA were obtained from the Dow Chemical Co. All other chemicals used were of reagent grade quality.…”

“…Chemical flowsheets were tested with feeds prepared both from actual plant concentrate and from laboratory-prepared concentrate in 12-stage mixersettlers. These units were Hanford-designed versions of a type developed at the Knolls Atomic Power Laboratory by Coplan and others (7).…”

Controlled-Cycle Operations Applied to Extraction Processes

“…2. After transfer of fraction 1 -/ of the heavy phase on each stage to the right, a material balance gives ^CHn = (1 -f)iCHn-i + f\Cnn (4) and since no light phase was transferred, zC Ln = i CLn (5) 3. After equilibration…”

“…1. Units having one or more of the following features: rotating impellers, specialized baffling, and intermediate coalescing sections (4,77,12,14).…”

Trilaurylamine Extraction of Neptunium and Plutonium from Purex Process Waste

“…The 19-stage units used were Hanford-designed versions of a type developed at the Knolls Atomic Power Laboratory by Coplan and others (8).…”