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Design Requirements for Uranium Ion Exchange from Acidic Solutions in a Fluidized System.

Authors
Traut-DE; Nichols-IL; Seidel-DC
Source
NTIS: PB 281 081 :29 pages
Link
NIOSHTIC No.
10007837
Abstract
A fluidized, countercurrent ion-exchange system was developed, operated, and evaluated by the Bureau of Mines in support of its objective to help assure an adequate uranium supply for future national needs. The system consisted of integrated multiple- compartment absorption and elution columns in which the solution flows are continuous, except for short periods when resin increments are withdrawn. The exchange of uranyl sulfate between a simulated acid-leach-uranium solution and a strong-base, ion-exchange resin was studied, together with subsequent elution using an acidified sodium chloride solution. The effects of the number of compartments, compartment height, amount of resin withdrawal, solution flow rate, and column diameter were investigated. Also examined were the kinetic and equilibrium relationships for the absorption and elution steps. The experimental data indicate a strong interdependence between variables. Solution retention time appears to be a major limiting variable in the absorption process, while resin residence time is the determining factor in the elution process. The columns system was efficient over a range of conditions, but close control was needed for optimum operation.
Publication Date
19780101
Document Type
IH; Report of Investigation;
Fiscal Year
1978
NTIS Accession No.
PB-281081
NTIS Price
A03
Identifying No.
RI 8282
NIOSH Division
SLRC;
Source Name
NTIS: PB 281 081
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