Recovery of fine coal from waste streams using advanced column flotation

Technical Report · Tue Jan 01 04:00:00 EST 1991

DOI:https://doi.org/10.2172/6086292· OSTI ID:6086292

Groppo, J G

The advanced flotation techniques, namely column flotation, have shown potential in obtaining a low ash, low pyritic sulfur fine size clean coal. The overall objective of this program is to evaluate applicability of an advanced flotation technique, 'Ken-Flote' column to recover clean coal with minimum mineral matter content at greater than 90 percent combustible recovery from two Illinois preparation plant waste streams. Column flotations tests were conducted on the flotation feed obtained from the Kerr-McGee Galatia and Ziegler No. 26 plants using three different bubble-generating devices: sparger, gas saver and foam jet. Each of these devices was tested with three different frothers and various column-operating variable to provide maximum combustible recovery, minimum product ash and maximum pyrite rejection. For the Galatia slurry, the column provided a clean coal containing 5 percent ash, 0.48 percent pyritic sulfur at combustible recovery averaging 90 percent. In other words, about 90 percent ash and about 75 percent pyritic sulfur rejection were attained for the Galatia slurry. Pilot plant studies on this slurry basically obtained results similar to the laboratory studies. For the Ziegler No. 26, slurry column flotation provided a clean coal containing about 5 percent ash, 0.44 percent pyritic sulfur at more than 90 percent combustible recovery. The ash and pyrite sulfur rejection was about 85 percent and 65 percent, respectively.

• Research Organization: Kentucky Univ., Lexington, KY (United States). Center for Applied Energy Research
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG22-90PC90176
• OSTI ID: 6086292
• Report Number(s): DOE/PC/90176-T59; ON: DE92004195
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
010800 -- Coal
Lignite
& Peat-- Waste Management
ASHES
CLEANING
COAL FINES
COAL PREPARATION PLANTS
COMBUSTION PRODUCTS
DEVELOPED COUNTRIES
DOCUMENT TYPES
FEDERAL REGION V
FLOTATION
ILLINOIS
INDUSTRIAL PLANTS
MANAGEMENT
MATERIALS RECOVERY
MINERALS
NORTH AMERICA
PROCESSING
PROGRESS REPORT
PYRITE
RECOVERY
REMOVAL
RESIDUES
SEPARATION PROCESSES
SULFIDE MINERALS
USA
WASTE MANAGEMENT
WASTE PROCESSING