Pyrite surface characterization and control for advanced fine coal desulfurization technologies. First annual report, September 1, 1990--August 30, 1991
Pyrite surface characterization and control for advanced fine coal desulfurization technologies. First annual report, September 1, 1990--August 30, 1991
The objective of this project is to conduct extensive studies on the surface reactivity of pyrite by using electrochemical, surface analysis, potentiometric and calorimetric titration, and surface hydrophobicity characterization techniques and to correlate the alteration of the coal-pyrite surface with the efficiency of pyrite rejection in coal flotation. The products as well as their structure, the mechanisms and the kinetics of the oxidation of coal-pyrite surfaces and their interaction with various chemical reagents will be systematically studied and compared with that of mineral-pyrite and synthetic pyrite to determine the correlation between the surface reactivity of pyrite and the bulk chemical properties of pyrite and impurities. The surface chemical studies and the studies of floatability of coal-pyrite and the effect of various parameters such as grinding media and environment, aging under different atmospheres, etc. on thereof, are directed at identifying the causes and possible solutions of the pyrite rejection problems in coal cleaning.
- University of Kentucky United States
- Bavarian Center for Applied Energy Research Germany
- University of North Texas United States
- University of North Texas United States
And Peat, Chemical And Physicochemical Properties, Coal Fines, 550, Surface Properties, Weathering, 400201, Calorimetry, 37 Inorganic, Oxidation, Electrochemistry, Lignite, Desulfurization, Flotation, Sampling, Organic, Progress Report, Correlations, Pyrite, Grinding, 540, 01 Coal, Titration, Preparation, Wettability, Physical And Analytical Chemistry, Potentiometry, Bituminous Coal 010300
And Peat, Chemical And Physicochemical Properties, Coal Fines, 550, Surface Properties, Weathering, 400201, Calorimetry, 37 Inorganic, Oxidation, Electrochemistry, Lignite, Desulfurization, Flotation, Sampling, Organic, Progress Report, Correlations, Pyrite, Grinding, 540, 01 Coal, Titration, Preparation, Wettability, Physical And Analytical Chemistry, Potentiometry, Bituminous Coal 010300
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