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Title: Flotation machine and process for removing impurities from coals

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 mineral 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. 4 figs.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
170460
Assignee:
Electric Power Research Inst., Palo Alto, CA (United States) PTO; SCA: 010300; PA: EDB-96:024512; SN: 96001517637
Patent Number(s):
US 5,472,094/A/
Application Number:
PAN: 8-131,514
Contract Number:
FG22-87PC79865
Resource Relation:
Other Information: PBD: 5 Dec 1995
Research Org:
Electric Power Research Institute
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; FLOTATION; DESULFURIZATION; DEASHING; SEPARATION EQUIPMENT; DESIGN; COAL PREPARATION; OPERATION; PERFORMANCE