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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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The GeologistWe finished last month with the fact that plant-remains were found in plenty both above and below the coal. I shall draw your attention first to the roof-shale—or clay over the coal—“over-clay” as it is often called: for in this the great majority of remains are preserved.In the roof-shale two kinds of plants are the most conspicuous—fern-leaves, and ...
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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 ...
W. Meiler, Reinhard Meusinger
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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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Preparation of Coal Briquette by Using Coal Waste and Coal Slurry
Advanced Materials Research, 2011Coal waste and coal slurry are the largest industrial waste generated from coal preparation plants. This paper describes a method to make clean coal briquette with coal waste and coal slurry. Two binders were used during the coal briquette making process.
Guang Jun Lu, Fang Qin Cheng
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COAL, SULFOMETHYLATED COAL AND SULFONATED COAL AS FERTILIZERS FOR SOLONETZ SOIL
Canadian Journal of Soil Science, 1971In pot experiments, with barley seedlings as an indicator crop, it was found that sulfomethylated and sulfonated coal products were less effective nitrogen fertilizers than ammonium nitrate for a Solonetz soil. Sulfonated coal suppressed the uptake of sodium and potassium and was toxic to the plants.
R. R. Cairns, S. E. Moschopedis
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