FLOW CHARACTERISTICS OF A CIRCULAR WEIR IN A CENTRIFUGAL FIELD
- 1 June 1961
- report
- Published by Office of Scientific and Technical Information (OSTI)
Abstract
The mixing and settling required for solvent extraction between liquid phases can be accomplished in a relatively small volume by a centrifugal contactor in which intense mixing is followed by separation of phases in a centrifugal field. Circular weirs, concentric with the axis of rotation, are used to set the overflow radii of the two liquid phases at positions that will cause the emulsion to float evenly in the disengaging section. For accurate control, the flow characteristics of the circular weirs must be known. An equation was developed for circular weirs by analogy to the relations for a simple weir, and the appropriate weir coefficients were evaluated empirically by experiments with both a steel contactor and a transparent plastic contactor. A correlation of the experimental coefficients was developed to allow calculation of general weir performance. (auth)Keywords
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