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Coal Washing...
Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Coal Washing
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Coal Washing (Classic Reprint)
Excerpt from Coal Washing There will be always a difference between ideal performance and what is actually accomplished. A coal washery is an ex pensive installation, built for long service. During its useful life the art of coal washing may advance uninterruptedly. The necessary and justifiable desire of the operator to try out all useful inventions, tends in some degree to equalize the above difference. New apparatus can be added to an Old washery, but the total reconstruction of an existing plant, so as to bring it' up to modern practice, is hardly justified, since on account of the constant changes in our ideas and the development of new machinery, the remodeling of a plant would never b...
Coal Washing
An engineering textbook on the methods and technologies used to clean coal and separate it from impurities. Topics covered include washing equipment, dense medium separators, flotation, and dewatering. This book is aimed at mining engineers, plant operators, and researchers in the coal industry. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Challenges in Fine Coal Processing, Dewatering, and Disposal
Coal mining and preparation have had a long history in the United States and the world, serving as the engine of growth for many industries. Today, new sources of energy, increased environmental awareness, and more stringent regulations from the U.S. Environmental Protection Agency and other organizations are changing the way coal is found, extracted, and used. As a result, fine coal cleaning, dewatering, and refuse disposal are now at a major crossroads. The increased level of fines, and near-density material in the inferior seams being mined today, necessitates the development of more efficient fine coal cleaning devices. This in turn requires improvements in traditional dewatering techniq...
Coal Preparation
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Ultrasonic Coal-Wash for De-Ashing and De-Sulfurization
This study focuses on the physical aspects of ultrasonic de-ashing and de-sulfurization, such as cavitation, streaming and their combined effects. Ambedkar Balraj proposes an ultrasound-assisted coal particle breakage mechanism and explores aqueous and solvent-based ultrasonic techniques for de-ashing and de-sulfurization. Ambedkar designs a Taguchi L-27 fractional-factorial matrix to assess the individual effects of key process variables. In this volume he also describes process optimization and scale-up strategies. The author provides a mechanism-based model for ultrasonic reagent-based coal de-sulfurization, proposes a flow diagram for ultrasonic methods of high-throughput coal-wash and discusses the benefits of ultrasonic coal-wash. Coal will continue to be a major fuel source for the foreseeable future and this study helps improve its use by minimising ash and sulfur impurities.
