Flotation machine and process for removing impurities from coals

Patent · Sun Jan 01 00:00:00 EST 1995

OSTI ID:870188

Szymocha, Kazimierz ^[1]; Ignasiak, Boleslaw ^[1]; Pawlak, Wanda ^[1]; Kulik, Conrad ^[2]; Lebowitz, Howard E ^[3]

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1. Edmonton, CA
2. Newark, CA
3. Mountain View, CA

The present invention is directed to a type of flotation machine that combines three separate operations in a single unit. The flotation machine is a hydraulic separator that is capable of reducing the pyrite and other mineral matter content of a coal. When the hydraulic separator is used with a flotation system, the pyrite and certain other minerals particles that may have been entrained by hydrodynamic forces associated with conventional flotation machines and/or by the attachment forces associated with the formation of microagglomerates are washed and separated from the coal.

• Research Organization: Electric Power Research Institute, Inc. (Palo Alto, CA)
• DOE Contract Number: FG22-87PC79865
• Assignee: Electric Power Research Institute (Palo Alto, CA)
• Patent Number(s): US 5472094
• OSTI ID: 870188
• Country of Publication: United States
• Language: English

Related Subjects

flotation
machine
process
removing
impurities
coals
directed
type
combines
separate
operations
single
unit
hydraulic
separator
capable
reducing
pyrite
mineral
matter
content
coal
minerals
particles
entrained
hydrodynamic
forces
associated
conventional
machines
attachment
formation
microagglomerates
washed
separated
removing impurities
flotation machine
mineral matter
rate operation
single unit
hydraulic separator
separate operations
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