Enhanced column flotation of fine and ultrafine coal

Conference · Tue Dec 31 23:00:00 EST 1991

OSTI ID:6940781

Slomka, B J; Buttermore, W H; Birlingmair, D H; Dawson, M R; Pollard, J L; Enustun, B V

A 2-inch diameter, twenty-foot tall, glass laboratory flotation column was modified to incorporate digital control of critical operating parameters. Different column control strategies were explored including location of the froth interface, and manipulation of volumetric flow ratios. Column flotation tests were performed with both fine (-250[mu]m) and ultrafine (-5[mu]m) Pittsburgh seam coal. Both moisture- and ash-free (MAF) recovery, and ash rejection were improved when the partition of the column's liquid content into froth and tailings was directly controlled. MAF recovery and ash rejection were also enhanced by brief exposure of the coarser feed to pulsed sonic energy.

• Research Organization: Ames Lab., IA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6940781
• Report Number(s): IS-M-728; CONF-921037--10; ON: DE93004470
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
AERATION
ASH CONTENT
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
COAL
DESIGN
ENERGY SOURCES
EQUIPMENT
FLOTATION
FOSSIL FUELS
FUELS
MATERIALS
MINERALS
MOISTURE
OPTIMIZATION
PERFORMANCE
PYRITE
SEPARATION PROCESSES
SOUND WAVES
SULFIDE MINERALS