PROCESSING LOW RANK COAL AND ULTRAFINE MINERAL PARTICLES BY HYDROPHOBICHYDROPHILIC SEPARATION RIDDHIKA JAIN Thesis submitted to the Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN MINING ENGINEERING ROEHOAN YOON CHAIR GERALD H
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By preventing coarser coal from being discarded with the ultrafine coal the quantity of coal disposed of could be decreased at all three collieries and by up to 24 in one case Increasing the crusher top size would reduce the amount of coal that is milled to less than 150 181m so that less is wasted
Learn MoreSouth African coal mining industry is currently disposing over 10 million tons of ultrafine coal lt150181m per year which is approximately 4 of the annual coal production 4 Coal fines are an unavoidable byproduct of the production of coal These fines have an average calorific value of 2283MJkg
Learn MoreResearch on the Ultrafine Crushing Technology of Ultralow Ash Taixi Anthracite in Stirred Mill Article in Information Technology Journal 122161696173 183 December 2013 with 7 Reads
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Learn MoreAbstract This paper discussed the ultrafine grinding and insitu modification of Taixi superlowash anthracite in stirred mill Particle size distribution of the products was determined by laser particle size analyzer The surface morphology and dispersion of the powder were detected by scanning electron microscopy SEM and surface structure of the modified powder was measured by Fourier
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Learn MoreDec 01 2012nbsp018332Crushing tests were conducted using a pilotscale doubleroll crusher with a diameter of 350 mm a length of 150 mm and rolls with reticulated surfaces The crusher was operated at 20 RPM The coal samples in four different size classes 530 215 375 mm 375 215 265 mm 132 215 952 mm and 67 215 475 mm were prepared using 2 US standard
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