Coal surface control for advanced fine coal flotation

Technical Report · Tue Jul 30 04:00:00 EDT 1991

DOI:https://doi.org/10.2172/5014320· OSTI ID:5014320

Fuerstenau, D W; Sastry, K V.S.; Hanson, J S; Diao, J; De, A; Sotillo, F; Harris, G ^[1]; Somasundaran, P; Harris, C C; Vasudevan, T; Liu, D; Li, C ^[2]; Hu, Weibai; Zou, Y; Chen, W ^[3]; Choudhry, V; Sehgal, R; Ghosh, A ^[4]

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

The primary objective in the scope of this research project is to develop advanced flotation methods for coal cleaning in order to achieve near total pyritic-sulfur removal at 90% Btu recovery, using coal samples procured from three 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 the main aspect of the project objectives. The results of this research are to be made available to ICF Kaiser Engineers who are currently working on the Engineering Development of Advanced Flotation under a separate contract with DOE under the Acid Rain Control Initiative program. A second major objective is to investigate factors involved in the progressive weathering and oxidation of coal that had been exposed to varying degrees of weathering, namely, open to the atmosphere, covered and in an argon-inerted'' atmosphere, over a period of twelve months. After regular intervals of weathering, samples of the three base coals (Illinois No. 6, Pittsburgh No. 8 and Upper Freeport PA) were collected and shipped to both the University of Pittsburgh and the University of California at Berkeley for characterization studies of the weathered material. 29 figs., 29 tabs.

• Research Organization: California Univ., Berkeley, CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-88PC88878
• OSTI ID: 5014320
• Report Number(s): DOE/PC/88878-T12; ON: DE92000277
• 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
AMINES
ARGON
ASH CONTENT
BITUMINOUS COAL
BLACK COAL
BUBBLES
CALORIFIC VALUE
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CLEANING
COAL
COMBUSTION PROPERTIES
COMMINUTION
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
ETHERS
FLOTATION
FLUIDS
FOSSIL FUELS
FUELS
GASES
GLYCOLS
GRINDING
HYDROXY COMPOUNDS
KINETICS
MACHINING
MATERIALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
PH VALUE
PROGRESS REPORT
PYRITE
RARE GASES
REACTION KINETICS
REMOVAL
SEPARATION PROCESSES
SULFIDE MINERALS
SURFACE PROPERTIES
WASHING
WEATHERING
XANTHATES