Skip to Content
Find More Like This
Return to Search

Flotation machine and process for removing impurities from coals

United States Patent

February 11, 1997
View the Complete Patent at the US Patent & Trademark Office
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.
Szymocha; Kazimierz (Edmonton, CA), Ignasiak; Boleslaw (Edmonton, CA), Pawlak; Wanda (Edmonton, CA), Kulik; Conrad (Newark, CA), Lebowitz; Howard E. (Mountain View, CA)
Electric Power Research Institute, Inc. (Palo Alto, CA)
08/ 567,191
December 5, 1995
This Invention was made with U.S. Government support under Contract No. DE-FG22-87PC79865 awarded by the Department of Energy. The Government has certain rights in this invention.