Coal surface control for advanced fine coal flotation. Quarterly report No. 5, October 1, 1989--December 31, 1989

Technical Report · Mon Feb 12 04:00:00 EST 1990

DOI:https://doi.org/10.2172/7015191· OSTI ID:7015191

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

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1. California State Senate Water Resources Committee, Sacramento, CA (USA)
2. Columbia Univ., New York, NY (USA)
3. Utah Univ., Salt Lake City, UT (USA)
4. Praxis Engineers, Inc

The primary goal of this research project is to develop advanced flotation methods for coal cleaning in order to achieve 90{percent} pyritic sulfur removal at 90{percent} 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{percent} 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. A second major objective is to investigate factors involved in the progressive weathering and oxidation of three base coals stored in three storage modes, namely, open, covered and in an argon-inerted atmosphere, over a period of twelve months. This quarter results are presented under the following topics: effect of ph modifiers on flotation performance; effect of anionic reagents during grinding; effect of organic monomers; effect of non-ionic reagents; grinding with collector and flotation kinetics; and flotation behavior of weathered coals. (CBS)

• Research Organization: California State Senate Water Resources Committee, Sacramento, CA (USA); Columbia Univ., New York, NY (USA); Utah Univ., Salt Lake City, UT (USA); Praxis Engineers, Inc., Milpitas, CA (USA)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• DOE Contract Number: AC22-88PC88878
• OSTI ID: 7015191
• Report Number(s): DOE/PC/88878-T5; ON: DE90007229
• 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
ACETATES
ADDITIVES
ALCOHOLS
ALKANES
CARBONACEOUS MATERIALS
CARBOXYLIC ACID SALTS
CHALCOGENIDES
CHEMICAL REACTIONS
CLEANING
COAL
COMMINUTION
DESULFURIZATION
DISPERSIONS
DOCUMENT TYPES
DODECANE
ENERGY SOURCES
ETHANOL
FLOTATION
FOSSIL FUELS
FUEL SLURRIES
FUELS
GRINDING
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROXY COMPOUNDS
IRON COMPOUNDS
IRON SULFIDES
MACHINING
MATERIALS
METHANOL
MINERALS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
PH VALUE
POLYCYCLIC SULFUR HETEROCYCLES
PROGRESS REPORT
PYRITE
SEPARATION PROCESSES
SLURRIES
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
SUSPENSIONS
TRANSITION ELEMENT COMPOUNDS
WASHING
WEATHERING