Coal waste dewatering systems. Open file report 11 December 1979-6 February 1981

Technical Report · Sun Feb 01 04:00:00 EST 1981

OSTI ID:5426059

Jacobsen, S P; Roushey, W; Rau, E L

Samples of fine coal refuse were obtained from 11 coal preparation plants throughout the United States. The samples were characterized by ash analysis, particle size, and mineral composition. From the characterization, geographical locations, and the dewatering equipment being used by the plants, five sites were selected for obtaining bulk fine refuse samples. The selected coal preparation plants were used for final dewatering thickeners followed by a vacuum disc filter, a filter press, a belt press filter, a centrifuge, and a settling pond. None were using thermal drying. The moisture content of the final cake ranged from approximately 23 to 50 pct, depending upon the feed material, flocculant addition, and the type of equipment. The filter press gave the lowest moisture content followed by a belt press and then either a centrifuge or vacuum filter. The centrifuge products were all dried to an approximate 5-pct moisture in a thermal dryer.

• Research Organization: Colorado School of Mines, Golden (USA). Research Inst.; Bureau of Mines, Washington, DC (USA)
• OSTI ID: 5426059
• Report Number(s): PB-81-244501
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
CHEMICAL REACTIONS
COAL PREPARATION
COAL PREPARATION PLANTS
COMMINUTION
DESULFURIZATION
FILTRATION
INDUSTRIAL PLANTS
INDUSTRIAL WASTES
MANAGEMENT
PROCESSING
REMOVAL
SAMPLING
SEPARATION PROCESSES
SOLID WASTES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER REMOVAL