Applications of air-sparged hydrocyclone technology
A fine-particle separation methodology, air-sparged hydrocyclone (ASH) flotation, has been under development since the early 1980s at the Univ. of Utah and at Advanced Processing Technologies, Inc. (APT), with sponsorship from the USDOE. The technology combines froth-flotation principles with the flow characteristics of a hydrocyclone in such a manner that the system can perform flotation separations in a matter of seconds, compared with minutes required in conventional flotation cells. This feature provides the air-sparged hydrocyclone with a high specific capacity, 100 to 600 times greater than that of conventional or column flotation processes. One of the most promising applications of ASH has been in fine coal cleaning. Several pioneering research programs carried out by the above organizations have demonstrated the effectiveness of ASH technology for a number of US, Canadian, Mexican, and South African coals. In February 1991, APT began a 2-year program to install, test, and evaluate both 6- and 15-inch (ASH-6C and ASH-15C) diameter units at Penelec's Homer City Coal Preparation Plant. Results indicated that with one stage of ASH-15C flotation, a clean coal product containing less than 8% ash was prepared at greater than 90%, combustible recovery from a feed containing about 20% ash.
- OSTI ID:
- 5333663
- Journal Information:
- PETC Review (Pittsburgh Energy Technology Center); (United States), Vol. 9
- Country of Publication:
- United States
- Language:
- English
Similar Records
Testing of the 15-inch air-sparged hydrocyclone for fine coal flotation at the Homer City preparation plant
Axial flow reversal and its significance in air-sparged hydrocyclone (ASH) flotation
Related Subjects
COAL
DEASHING
FLOTATION
CYCLONE SEPARATORS
DESIGN
HAZARDOUS MATERIALS
OIL SPILLS
ORE PROCESSING
REMEDIAL ACTION
SOILS
CARBONACEOUS MATERIALS
CONCENTRATORS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
INERTIAL SEPARATORS
MATERIALS
POLLUTION CONTROL EQUIPMENT
PROCESSING
SEPARATION EQUIPMENT
SEPARATION PROCESSES
010300* - Coal
Lignite
& Peat- Preparation- (1987-)