Coal surface control for advanced fine coal flotation

Technical Report · Tue Aug 15 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/5701818· OSTI ID:5701818

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

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1. California Univ., Berkeley, CA (USA)

The primary goal of this project is to develop advanced flotation methods for coal cleaning in order to achieve 90% pyritic sulfur removal at 90% Btu yield, 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. Large quantities of coal samples have been procured from six major seams. Samples of the same coals are also to be supplied to the University of Pittsburgh for selective agglomeration research. A second objective is to investigate factors involved in the progressive weathering and oxidation of coal stored in three storage modes, namely, open, covered and in an argon-inerted atmosphere, over a period of twelve months. After regular intervals of weathering, samples of the three base coals are to be collected and shipped to both the University of Pittsburgh and the University of California at Berkeley for characterization studies of the weathered coals. Work is divided into 8 tasks: (1) project work plan; (2) coal procurement and weathering; (3) coal characterization; (4) standard beneficiation test; (5) grinding studies; (6) surface modification studies; (7) exploratory R D and support; and (8) task integration and project management. 8 refs., 50 figs., 38 tabs.

• Research Organization: Columbia Univ., New York, NY (USA); Utah Univ., Salt Lake City, UT (USA); California Univ., Berkeley, CA (USA); Praxis Engineers, Inc., Milpitas, CA (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-88PC88878
• OSTI ID: 5701818
• Report Number(s): DOE/PC/88878-T4; ON: DE90001157
• 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
ASH CONTENT
CARBONACEOUS MATERIALS
CLEANING
COAL
COAL PREPARATION
COMMINUTION
DATA
DOCUMENT TYPES
ENERGY SOURCES
ETHANOL
EXPERIMENTAL DATA
FLOTATION
FOSSIL FUELS
FUELS
GRINDING
HYDROXY COMPOUNDS
INFORMATION
MACHINING
MATERIALS
METHANOL
MODIFICATIONS
NUMERICAL DATA
ORGANIC COMPOUNDS
PARTICLE SIZE
PH VALUE
PROGRESS REPORT
SEPARATION PROCESSES
SIZE
SULFUR CONTENT
SURFACE PROPERTIES
WASHING
WEATHERING