Characterization of multiphase fluid flow during air-sparged hydrocyclone flotation by X-ray CT. Thirteenth quarterly report: 14 August--13 November, 1993
The research activities during this quarter of the DOE project, {open_quotes}Characterization of Multiphase Fluid Flow During Air-Sparged Hydrocyclone Flotation{close_quotes}, involved a detailed parametric study of the flotation response of the ASH, establishing an empirical correlation between flotation response and operating variables, and development of a phenomenological description of the observed responses. In these experiments with quartz particles, flotation response is essentially characterized by recovery of the solids to the overflow. Dimensionless variables such as the ratio of overflow opening area to underflow opening area, the ratio of air flow rate to slurry flow rate, percent solids in the feed suspension, particle size, inlet velocity (i.e. slurry pressure) are all of paramount importance. A series of experiments were designed to systematically study the effects of these variables on the flotation response. The radial density distribution profiles obtained from x-ray CT measurements (presented in earlier quarterly reports) reflect the fluid flow behavior of the ASH to a great extent. Based on the results of the experimental tests an empirical model has been developed correlating recovery with the operating variables.
- Research Organization:
- Utah Univ., Salt Lake City, UT (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-90PC90311
- OSTI ID:
- 10118040
- Report Number(s):
- DOE/PC/90311-13; ON: DE94005758; TRN: 94:001592
- Resource Relation:
- Other Information: PBD: 16 Nov 1993
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
SLURRIES
FLUID FLOW
QUARTZ
FLOTATION
PROGRESS REPORT
FLOW MODELS
COMPUTERIZED TOMOGRAPHY
SOLIDS FLOW
LIQUID FLOW
FLUID MECHANICS
X RADIATION
WATER
SPARGERS
AIR FLOW
CYCLONE SEPARATORS
PARAMETRIC ANALYSIS
420400
013000
HEAT TRANSFER AND FLUID FLOW
TRANSPORT, HANDLING, AND STORAGE