Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Carbon dioxide for fine coal flotation: Progress report, first quarter, second year

Technical Report ·
OSTI ID:5924045
Preliminary FTIR experimental work described in the first Annual Report has demonstrated the potential for the characterization of coal hydrophobicity by FTIR spectroscopy. In this regard, detailed research has been carried out on hydrophobicity characterization of fine coal using FTIR spectroscopy. FTIR spectra were recorded by a DIGILAB FTS-40 FTIR spectrometer using a diffuse reflectance technique. The diffuse reflectance accessory, COLLECTOR, was obtained from Spectra-Tech Inc. A germanium-coated KBr beam-splitter and a liquid nitrogen-cooled Hg-Cd-Te detector were used, and each spectrum of coal was obtained for 700 scans at 2 cm/sup -1/ resolution with KBr powder a background. Since sharp absorption bands for net coal samples were achieved, the samples were not diluted with KBr. Because diffuse reflectance FTIR spectroscopy can reveal the microscopic or molecular nature of the coal surface, attempts have been made to describe coal hydrophobicity by this new technique.
Research Organization:
Utah Univ., Salt Lake City (USA). Dept. of Metallurgy and Metallurgical Engineering
DOE Contract Number:
FG22-85PC80530
OSTI ID:
5924045
Report Number(s):
DOE/PC/80530-T4; ON: DE88002646
Country of Publication:
United States
Language:
English