The effects of weathering on flotation and thermoplastic properties of coal

Conference · Wed Apr 01 04:00:00 EST 1987 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:6456730

Wu, M M; Robbins, G A; Winschel, R A; Burke, F P

The work reported in this paper is a systematic laboratory study of coal weathering at realistic conditions of temperature and time using different ranks of coal. The objectives of this study are to determine the effects of weathering on coal properties with emphasis on froth flotation and thermoplastic properties, to compare the abilities of various technquies to measure the degree of weathering, and to better define the chemical nature of low-temperature coal weathering. In this paper, weathering is defined as the progressive changes in coal properties that occur as coal is exposed to humid air at temperatures of 80/sup 0/C or less. Properties of laboratory weathered coals are compared with those of a naturally weathered coal.

• Research Organization: Conoco Coal Research Div., 4000 Brownsville Road, Library, PA 15129
• OSTI ID: 6456730
• Report Number(s): CONF-870410-
• Conference Information: Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Journal Volume: 32:1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300 -- Coal
Lignite
& Peat-- Preparation-- (1987-)
010600* -- Coal
Lignite
& Peat-- Properties & Composition
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL PREPARATION
COAL RANK
COMPARATIVE EVALUATIONS
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FUELS
HUMIDITY
KINETICS
MATERIALS
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
OXIDATION
PHYSICAL PROPERTIES
PLASTICITY
REACTION KINETICS
SEPARATION PROCESSES
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
TIME DEPENDENCE
WEATHERING