By J. S. Laskowski
To stick ecocnomic whereas complying with environmental rules calls for that the coal not just increase wonderful coal restoration but additionally reveals greater methods for its usage. this is often the 1st monograph at the processing of excellent coal which acknowledges that every one unit operations that deal with high quality 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, positive coal manipulation, pelletization and briquetting, and coal-water slurries.Readers all for mineral processing, chemical engineering, mining and metallurgical engineering; technical group of workers operating for reagent providers; and scientists studying the sphere of coal floor chemistry, flotation and superb coal usage will locate this quantity of significant curiosity.
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5 (Smoluchowski equation). Electrokinetic measurements should be made at constant ionic strength. For example, in a study of the effect of pH on the electrophoretic mobility of particles whose surface charge is determined by H + and OH- ions, both the surface and zeta potential change with pH. However, the rate of decay of potential from the surface is also a function of the ionic strength (Eq. 12)); hence the zeta potential is dependent on both 7to and to. To measure the true effect of pH on zeta potential requires that tc be maintained as a constant and this is achieved by conducting the measurements in a solution of indifferent electrolyte.
The effect of particle size on the FI index as determined for the Illinois No. 6 coal sample is shown in Fig. 17 . Chapter 2. Coal characteristics related to coal preparation 27 100 8o > O 60 N 4o 9 20 0 0 20 40 60 80 100 100-ASH REIECTION, % Fig. 16. An illustration of the concept of multiple flotation indices. (After Mohanty et al. ) 90 . . . . 6 ' 9 40 . . . . 6COAL COAL 70 600 i 20 i , , 50 .... I 100 . 9 200 500 d80 PARTICLE SIZE, pin 281 I 0 , 9 , ,, ,,1 , 9 9 200 500 d80 PARTICLE SIZE, gin 20 50 100 Fig.
Greer, Coal microstructure and pyrite distribution. D. ), Coal Desulfurization --Chemical and Physical Methods. ACS Symp. Ser. 64, American Chemical Society, Washington DC, 1977, pp. 1-15.  D. T. H. Yoon, Image analysis characterization of pyrite in fine coal flotation. Miner. Metall. , 10 (1993) 154. T. G. E. Lovenhaupt, Pyrite and ash liberation from selected coals. A. ), Processing and Utilization of High Sulfur Coals. Elsevier, Amsterdam, 1985, pp. 19-30. S. M. S. L. Sirois, Desulfurizing flotation of Eastern Canadian high sulfur coal.