Pressure, Centrifugal and Electrically Assisted Dewatering of Coal

Bainbridge, Norman W. ; Johnston, Barry K. ; Lockhart, Neville C.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 11
Publication Date: Jan 1, 1995
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CSIRO and its collaborators have developed a major R & D project on dewatering of coal. This involves sub-projects on (i) the fundamentals of coal-water associations; (ii) reducing the variability of product moisture levels from small coal centrifuges; (iii) process mechanisms and optimisation for fine coal dewatering; (iv) pilot scale testing, engineering development and innovation. Results from each of these sub-projects are presented, and the pilot facility incorporating a vacuum filter, belt press, membrane press, hyperbaric filters and centrifuges, is discussed. The vacuum filter and membrane press can be configured for electric-field assisted dewatering, which provides substantial enhancements in the rate and degree of dewatering for fine coal, coal tailings, and other suspensions.
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