Fine coal flotation in a centrifugal field with an air sparged hydrocyclone

Journal Article · Mon Nov 01 04:00:00 EST 1982 · Min. Eng. (Littleton, Colo.); (United States)

OSTI ID:6294622

Miller, J D; van Camp, M C

Preliminary results are reported for the design and development of a pilot-scale air-sparged hydrocyclone for cleaning fine coal (590 ..mu..m, - 28 mesh) containing 24% ash and 1.6% sulphur. The principle of separation is the flotation of hydrophobic coal particles in the centrifugal field generated by the fluid flow in the air-sparged hydrocyclone. This 152 mm hydrocyclone has a nominal capacity of 0.9 ton/h, and experimental results suggest that separations vastly superior to a water-only cyclone are possible. In addition, the separation efficiency is as good, if not better, than that achieved with conventional flotation cells. Typical results indicate that 75% clean coal can be recovered at 15% ash leaving a tailing product of almost 50% ash.

• OSTI ID: 6294622
• Journal Information: Min. Eng. (Littleton, Colo.); (United States), Journal Name: Min. Eng. (Littleton, Colo.); (United States) Vol. 34:11; ISSN MIENA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
AIR
CARBONACEOUS MATERIALS
CENTRIFUGATION
COAL
COAL FINES
COAL PREPARATION
COMMINUTION
CONCENTRATORS
CYCLONE SEPARATORS
DEASHING
DESIGN
EFFICIENCY
ENERGY SOURCES
EQUIPMENT
FLOTATION
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GASES
INERTIAL SEPARATORS
MATERIALS
PERFORMANCE
PILOT PLANTS
POLLUTION CONTROL EQUIPMENT
SEPARATION EQUIPMENT
SEPARATION PROCESSES