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Title: CRITICALLY SAFE EQUIPMENT FOR AQUEOUS SEPARATIONS PROCESSES

Abstract

The operating characteristics of critically-safe''slab'' mixer-settlers and continuous solvent washers are described. The effectiveness of some experimental units of each type was evaluated for a number of tributyl - phosphate-kerosene and uranyl nitrate-nitric acidaluminum nitrate systems. The units described are prototypes of equipment that could be used in a full scale he mixer-settlers are of the ''pump-mix'' type and are shaped in the form of slabs, three inches high. When positioned in an operating area so that the large faces of the slab are at least six feet away from solid reflectors, the slabs are critically safe for concentrations of fissionable materials as high as 400 grams per liter of solution. The critically-safe solvent washers are cylinders, 7 inches in diameter and 12 feet hdgh. A continuous washer was evaluated with 6 and 30% tributyl phosphate in kerosene solutions. The effect of mixing speed, recirculation rate, cylinder height, and solution properties on the entrainment of a sodium carbonate wash in the solvent was determined at processing rates up to 0.5 gpm. A unitized equipment layout in which continuous washers are coupled directly to two mixer-settlers in such a way as to provide a closed solvent circuit is presented to illustratemore » a practical solvent extraction cycle with a minimum of equipment and solvent inventory. (auth)« less

Authors:
Publication Date:
Research Org.:
Du Pont de Nemours (E.I.) & Co. Savannah River Lab., Augusta, Ga.
OSTI Identifier:
4328408
Report Number(s):
A/CONF.15/P/518
NSA Number:
NSA-12-014685
Resource Type:
Technical Report
Resource Relation:
Other Information: Prepared for the Second U.N. International Conference on the Peaceful Uses of Atomic Energy, 1958. Orig. Receipt Date: 31-DEC-58
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
CHEMISTRY; ALUMINUM; ALUMINUM NITRATES; BUTYL PHOSPHATES; CONCENTRATION; CONFIGURATION; CRITICALITY; CYLINDERS; EXTRACTION COLUMNS; FISSIONABLE MATERIALS; HYDROCARBONS; KEROSENE; LABORATORY EQUIPMENT; LIQUID FLOW; MIXER-SETTLERS; MIXING; NITRIC ACID; OPERATION; PERFORMANCE; PETROLEUM; PLATES; PRECIPITATION; PUMPS; QUANTITY RATIO; REFLECTORS; SAFETY; SEPARATION PROCESSES; SODIUM CARBONATES; SOLIDS; SOLUTIONS; SOLVENT EXTRACTION; SOLVENTS; TESTING; URANYL NITRATES; VELOCITY; WATER

Citation Formats

Colven, T J. CRITICALLY SAFE EQUIPMENT FOR AQUEOUS SEPARATIONS PROCESSES. Country unknown/Code not available: N. p., 1958. Web.
Colven, T J. CRITICALLY SAFE EQUIPMENT FOR AQUEOUS SEPARATIONS PROCESSES. Country unknown/Code not available.
Colven, T J. 1958. "CRITICALLY SAFE EQUIPMENT FOR AQUEOUS SEPARATIONS PROCESSES". Country unknown/Code not available.
@article{osti_4328408,
title = {CRITICALLY SAFE EQUIPMENT FOR AQUEOUS SEPARATIONS PROCESSES},
author = {Colven, T J},
abstractNote = {The operating characteristics of critically-safe''slab'' mixer-settlers and continuous solvent washers are described. The effectiveness of some experimental units of each type was evaluated for a number of tributyl - phosphate-kerosene and uranyl nitrate-nitric acidaluminum nitrate systems. The units described are prototypes of equipment that could be used in a full scale he mixer-settlers are of the ''pump-mix'' type and are shaped in the form of slabs, three inches high. When positioned in an operating area so that the large faces of the slab are at least six feet away from solid reflectors, the slabs are critically safe for concentrations of fissionable materials as high as 400 grams per liter of solution. The critically-safe solvent washers are cylinders, 7 inches in diameter and 12 feet hdgh. A continuous washer was evaluated with 6 and 30% tributyl phosphate in kerosene solutions. The effect of mixing speed, recirculation rate, cylinder height, and solution properties on the entrainment of a sodium carbonate wash in the solvent was determined at processing rates up to 0.5 gpm. A unitized equipment layout in which continuous washers are coupled directly to two mixer-settlers in such a way as to provide a closed solvent circuit is presented to illustrate a practical solvent extraction cycle with a minimum of equipment and solvent inventory. (auth)},
doi = {},
url = {https://www.osti.gov/biblio/4328408}, journal = {},
number = ,
volume = ,
place = {Country unknown/Code not available},
year = {Fri Oct 31 00:00:00 EST 1958},
month = {Fri Oct 31 00:00:00 EST 1958}
}

Technical Report:
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