Flow and design characteristics of the hydrocyclone for the recovery of coal fines. Fifth quarterly report, September 1, 1982-November 30, 1982

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6625396

Davis, P K

An attachment to the new experimental system has been designed and constructed so that spheres can be injected at the center of the vortex motion inside the hydrocyclone rather than upstream from the tangential inlet. This is accomplished by means of a tube up through device is included in Appendix G. Preliminary data show a significant improvement in the separation ability of the hydrocyclone, the idea being that the light particles do not have to make their way to the center because they are already there. The heavier particles are quickly thrown out radially to the wall by the centrifugal force once they are caught up in the swirling flow. Plots comparing these data to previous data in which the spheres were injected tangentially with the water flow are given in Appenidix G. Another idea for a possible improved design is to have an underflow that discharges tangentially rather than through a centrally located underflow. It has been found that quite often the heavy spheres get trapped in the hydrocyclone and do not report down the cone and out the underflow opening in the apex as desired. A very small plastic hydrocyclone has been constructed and preliminary data indicate that the heavy spheres that do not report to the overflow will indeed exit out a tangential opening in the hydrocyclone. It is anticipated that further research will be done using this concept.

• Research Organization: Southern Illinois Univ., Carbondale (USA)
• DOE Contract Number: FG22-81PC40807
• OSTI ID: 6625396
• Report Number(s): DOE/PC/40807-T5; ON: DE83003860
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CARBONACEOUS MATERIALS
COAL
COAL FINES
COAL PREPARATION
COMMINUTION
CONCENTRATORS
CYCLONE SEPARATORS
DATA
DESIGN
ENERGY SOURCES
EQUIPMENT
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
INERTIAL SEPARATORS
INFORMATION
MATERIALS
NUMERICAL DATA
PERFORMANCE TESTING
POLLUTION CONTROL EQUIPMENT
RECOVERY
SCALING LAWS
SEPARATION EQUIPMENT
SPHERES
TESTING