Characterization of multiphase fluid flow during air-sparged hydrocyclone flotation by x-ray CT
The effect of A* (the dimensionless ratio of overflow opening area to underflow opening area) on the fluid flow behavior of the 2 inch ASH-2C unit was studied for different percentage of solids in the suspension. Limestone, a hydrophilic solid was chosen for study. The particle size of the solids was taken as [minus]100 [plus]200 mesh. Three different concentrations of solids in the suspension were considered, 5, 10 and 20% by weight. The corresponding pulp densities of the feed suspension for these three cases are 1.09, 1.18 and 1.36 g/cc respectively. Since no collector was added to the suspension, all the solids are expected to report to the underflow. For all these studies the Q* value was maintained at the same level (Q* = 2.28). Reconstructed images from the CT scanner were analyzed using the graphics software developed at the University of Utah. Assuming the air core to be cylindrical in shape and using the previously generated calibration curve, the average density of the swirl layer and its average thickness were estimated for each slice. These results are presented graphically in the accompanying figures along the axis of the ASH unit from bottom to top.
- Research Organization:
- Utah Univ., Salt Lake City, UT (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-90PC90311
- OSTI ID:
- 7027506
- Report Number(s):
- DOE/PC/90311-8; ON: DE93000920
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of multiphase fluid flow during air-sparged hydrocyclone flotation by x-ray CT
Characterization of multiphase fluid flow during air-sparged hydrocyclone flotation by x-ray CT. Tenth quarterly report, 14 November 1992--13 February 1993
Related Subjects
47 OTHER INSTRUMENTATION
COAL PREPARATION
FLOTATION
CYCLONE SEPARATORS
COMPUTERIZED TOMOGRAPHY
EXPERIMENTAL DATA
PROGRESS REPORT
X RADIATION
CONCENTRATORS
DATA
DIAGNOSTIC TECHNIQUES
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
EQUIPMENT
INERTIAL SEPARATORS
INFORMATION
IONIZING RADIATIONS
NUMERICAL DATA
POLLUTION CONTROL EQUIPMENT
RADIATIONS
SEPARATION EQUIPMENT
SEPARATION PROCESSES
TOMOGRAPHY
010300* - Coal
Lignite
& Peat- Preparation- (1987-)
440800 - Miscellaneous Instrumentation- (1990-)