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Coal characterisation by automated coal petrography⋆
Fuel, 2003Automated imaging techniques were refined to characterise the rank and maceral composition of coals by a full maceral reflectogram of polished coal grain mounts. Precision was improved by processing individual grains in each image separately and correcting within the software for the topography that occurs between the different macerals and minerals in
O'Brien, G. +3 more
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2004
Coal is a very special material in that, unlike the minerals which we have hitherto considered, it does not come with any defined composition. Its principal element is carbon, but the proportion of carbon and its bonding can vary considerably, which partly defines its rank.
Enver Murad, John Cashion
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Coal is a very special material in that, unlike the minerals which we have hitherto considered, it does not come with any defined composition. Its principal element is carbon, but the proportion of carbon and its bonding can vary considerably, which partly defines its rank.
Enver Murad, John Cashion
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Science, 1972
Coal combustion is the largest single source of sulfur oxide pollution. Treatment of some major representative U.S. coals with aqueous ferric solution removes 40 to 75 percent of the sulfur content through near quantitative oxidation of the pyritic sulfur contained in the coal matrix.
R A, Meyers +3 more
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Coal combustion is the largest single source of sulfur oxide pollution. Treatment of some major representative U.S. coals with aqueous ferric solution removes 40 to 75 percent of the sulfur content through near quantitative oxidation of the pyritic sulfur contained in the coal matrix.
R A, Meyers +3 more
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Coal geology and the coal industry
Economic Geology, 1958The more important changes in the American coal industry during the past fifty years have been brought about through the increasing reliance upon mechanization, automation, and management. The changes have been made possible mainly by industrial research, experimentation, and testing, particularly in the fields of mechanical engineering, preparation ...
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NMR of Coals and Coal Products
1991Publisher Summary The chapter discusses the nuclear magnetic resonance (NMR) of coals and coal products. Of the various analytical methods available, NMR spectroscopy has proved to be of special importance in coal research. Different NMR techniques allow the structure of coal and coal products to be investigated in a direct and nondestructive way ...
Wolfgang Meiler, Reinhard Meusinger
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