Carbon dioxide for fine coal flotation: Progress report, third quarter, second year
Technical Report
·
OSTI ID:5837962
The hydrophilicity index from FTIR spectroscopy has been successfully used to describe the surface state of coal and hence its flotation behavior. The FTIR hydrophilicity index has been used to monitor the surface state of the coal as influenced by CO/sub 2/-pressure treatment. A controlled environment chamber was used to monitor the hydrophobicity change of fine coal during the CO/sub 2/-pressure treatment. A high-volatile bituminous (HVB) coal was selected for this purpose since the HVB coal is most amenable to the carbon dioxide coal flotation technology. Hydrophobicity for the fine coal characterized by in-situ FTIR spectroscopy increased significantly after a 50-minute treatment of dry powdered coal at a CO/sub 2/ pressure of 20 psi, and a plateau value is reached after that time. These results, demonstrate the general utility of diffuse reflectance FTIR for the characterization of hydrophobicity and the particular utility of diffuse reflectance FTIR with respect to the analysis of carbon dioxide flotation of fine coal. 3 figs.
- Research Organization:
- Utah Univ., Salt Lake City (USA). Dept. of Metallurgy and Metallurgical Engineering
- DOE Contract Number:
- FG22-85PC80530
- OSTI ID:
- 5837962
- Report Number(s):
- DOE/PC/80530-T5; ON: DE88002648
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010300 -- Coal
Lignite
& Peat-- Preparation-- (1987-)
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ADSORPTION
BITUMINOUS COAL
BLACK COAL
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COAL FINES
DOCUMENT TYPES
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FOURIER TRANSFORMATION
FUELS
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
KINETICS
MATERIALS
MATTER
OXIDES
OXYGEN COMPOUNDS
PRESSURE EFFECTS
PROGRESS REPORT
REACTION KINETICS
REAGENTS
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROSCOPY
SURFACE PROPERTIES
TRANSFORMATIONS
VOLATILE MATTER
010300 -- Coal
Lignite
& Peat-- Preparation-- (1987-)
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ADSORPTION
BITUMINOUS COAL
BLACK COAL
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COAL FINES
DOCUMENT TYPES
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FOURIER TRANSFORMATION
FUELS
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
KINETICS
MATERIALS
MATTER
OXIDES
OXYGEN COMPOUNDS
PRESSURE EFFECTS
PROGRESS REPORT
REACTION KINETICS
REAGENTS
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROSCOPY
SURFACE PROPERTIES
TRANSFORMATIONS
VOLATILE MATTER