Coal surface control for advanced fine coal flotation

Technical Report · Wed Feb 28 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6568618· OSTI ID:6568618

Fuerstenau, D W; Sastry, K V.S.; Hanson, J S; Narayanan, K S; Herrera-Urbina, R; Diao, J; Yin, Y; Sotillo, F; Harris, G ^[1]; Hu, Weibei; Zou, Y; Chen, W ^[2]; Somasundaran, P; Harris, C C; Vasudevan, T; Xhong, K; Xiao, L ^[3]; Choudhry, V; Shea, S; Ghosh, A ; Sehgal, R ^[4]

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1. California Univ., Berkeley, CA (USA)
2. Utah Univ., Salt Lake City, UT (USA)
3. Columbia Univ., New York, NY (USA)
4. Praxis Engineers, Inc., Mi

The primary objective of this research project is to develop advanced flotation methods for coal cleaning in order to achieve 90% pyritic sulfur removal at 90% Btu recovery, using coal samples procured from six major US coal seams. Concomitantly, the ash content of these coals is to be reduced to 6% or less. Investigation of mechanisms for the control of coal and pyrite surfaces prior to fine coal flotation is an important aspect of the project objectives. The effect of the following additives on flotation response was investigated. These include methanol lethanol, butylbenzaldehyde, glyoxal and several monomers. A second major objective is to investigate factors involved in the progressive weathering and oxidation of coal that had been stored in three storage modes, namely, open, covered and in an argon-inerted'' atmosphere, over a period of twelve months. 33 refs., 134 figs., 98 tabs.

• Research Organization: California Univ., Berkeley, CA (USA); Utah Univ., Salt Lake City, UT (USA); Columbia Univ., New York, NY (USA); Praxis Engineers, Inc., Milpitas, CA (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-88PC88878
• OSTI ID: 6568618
• Report Number(s): DOE/PC/88878-T6; ON: DE90015370
• 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
ADDITIVES
ALCOHOLS
ALDEHYDES
ALKENES
ALKYLATED AROMATICS
AROMATICS
ASH CONTENT
BUTENES
CARBONACEOUS MATERIALS
CARBOXYLIC ACID ESTERS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL PREPARATION
COMMINUTION
CRYSTAL STRUCTURE
DATA
DESULFURIZATION
DOCUMENT TYPES
ENERGY SOURCES
ESTERS
ETHANOL
EXPERIMENTAL DATA
FLOTATION
FOSSIL FUELS
FUELS
GRINDING
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
MACHINING
MATERIALS
METHACRYLIC ACID ESTERS
METHANOL
METHYL METHACRYLATE
MICROSTRUCTURE
MINERALS
MODIFICATIONS
MONOMERS
NUMERICAL DATA
ORGANIC COMPOUNDS
PARTICLE SIZE
PH VALUE
PROGRESS REPORT
PYRITE
SEPARATION PROCESSES
SIZE
SPECTRA
STYRENE
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
WEATHERING