APPLICATIONS OF ULTRASONIC ENERGY. Progress Report No. 11 Covering Period from August 1, 1958 to September 30, 1958

Technical Report · Wed Oct 01 04:00:00 EDT 1958

DOI:https://doi.org/10.2172/4235154· OSTI ID:4235154

Continuous aqueous precipitaticn of thorium oxalate was accomplished using impinging jet streanns of the reactants in an ultrasonically activated zone. Evaluation of the influence on resultant particle size was obtained through photomicrographs and centrifugal sedimentation size analysis. Log probability plots showed a significant decrease in particle size and a narrowing of the size distribution for the ultrasonically prepared material as compared to the control. Leaching of a cesium-bearing alumina waste with 0.01 N nitric acid in the presence of vibratory energy was less effective at a frequency of 800 kc than at 20 kc. The effect of treatment time, power level, and ratio of leach liquid to waste was investigated with a 20-kc 'fixed-bed'' treatment vessel. Leaching efficiency was increased at the higher power levels and the same efficiency maintained when the ratio of waste to acid was increased. Intermittent treatment may be effective, with promise for further equipment economies. Several liquid additive aerosols were evaluated in the ultrasonic agglomeration of KCl aerosol, a simulant for radioactive particulates in calciner off-gas. Silicone oils of several viscosities and two liquid surfactants produced essentially the same degree of agglomeration as the glycerinewater mixture previously used. Development of a larger unit for field test was imitiated. Studies of ultrasonic coalescence in stabliized kerosene-water emulsions led to the conclusion that a longer exposure time is indicated. Therefore fabrication was undertaken on a new annular treatment vessel which will permit a twofold increase in treatment time at the same linear velocity previously found to be near optimum. (For preceding period see NY0-7931.) (auth)

• Research Organization: Aeroprojects, Inc., West Chester, Penna.
• NSA Number: NSA-13-018905
• OSTI ID: 4235154
• Report Number(s): NYO-7932
• Country of Publication: United States
• Language: English

Related Subjects

AEROSOLS
ALUMINUM OXIDES
CENTRIFUGATION
CESIUM COMPOUNDS
CHEMISTRY
COMBUSTION
ECONOMICS
EMULSIONS
FREQUENCY
GRAIN SIZE
LEACHING
MICROSCOPY
NITRIC ACID
OXALATES
PETROLEUM
PHOTOGRAPHY
POTASSIUM CHLORIDES
PRECIPITATION
RADIOACTIVITY
SILICONES
THORIUM COMPOUNDS
ULTRASONICS
USES
VISCOSITY
WASTE SOLUTIONS
WATER