Coal Flotation and Fine Coal Utilization by J. S. Laskowski
By J. S. Laskowski
To stick ecocnomic whereas complying with environmental laws calls for that the coal not just increase nice coal restoration but in addition reveals higher methods for its usage. this is often the 1st monograph at the processing of excellent coal which acknowledges that each one unit operations that deal with positive coal rely on coal floor houses, and which in a single unmarried quantity presents a entire creation to coal floor chemistry, utilizing it conscientiously in treating coal flotation basics and engineering, wonderful coal manipulation, pelletization and briquetting, and coal-water slurries.Readers excited about mineral processing, chemical engineering, mining and metallurgical engineering; technical group of workers operating for reagent providers; and scientists getting to know the sphere of coal floor chemistry, flotation and wonderful coal usage will locate this quantity of serious curiosity.
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To stick ecocnomic whereas complying with environmental laws calls for that the coal not just enhance fantastic coal restoration but in addition reveals greater methods for its usage. this can be the 1st monograph at the processing of excellent coal which acknowledges that every one unit operations that deal with nice coal depend upon coal floor houses, and which in a single unmarried quantity presents a entire creation to coal floor chemistry, utilizing it conscientiously in treating coal flotation basics and engineering, superb coal manipulation, pelletization and briquetting, and coal-water slurries.
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The constituents of ash do not occur as such in coal but are formed as a result of chemical changes that take place in mineral matter during the combustion process. The ash is sometimes defined as all elements in coal except carbon, hydrogen, nitrogen, oxygen, and sulfur. 1 . Mineral matter content in coal can be calculated from one of the empirical relationships between mineral matter and ash contents. The best known is Parr's formula. It is used in different forms in major coal-producing countries.
Abdel-Baset, EH. E Yarzab, Re-examination of the phenolic hydroxyl content of coals. Fuel, 57 (1978) 95. L. Baughman, Synthetic Fuels Data Handbook. Cameron Engineers, Denver, CO, p. 175. M. R. A. D. Kalkreuth, Coal Petrology, Its Principles, Methods and Applications. Canadian Geological Association, St. Johns, 1983. E Kessler, Interpretation of the chemical composition of bituminous coal macerals. Fuel, 52 (1973) 191. C. Cook, What are we trying to separate? Sep. Sci. , 16 (1981) 1545. D. R. Ruch, Mineral matter in Illinois and other US coals.
The results of comprehensive wettability studies on coals from the Donbass Basin (Ukraine) were published by Elyashevitch [ 18] while further details were provided by Horsley and Smith  in the 1950s. But the first complete analysis of the wettability of coals as a function of coal rank was offered by Klassen in his monograph on coal flotation  in which he analyzed Elyashevitch's data [ 18]. Fig. 3 shows contact angle values plotted vs. coal rank taken from the paper published by Elyashevitch et al.