Laboratory Investigation Of The Effect Of Temperature On Coal Flotation

Author : A. (Allan) McIntyre
Publisher : National Library of Canada
ISBN 13 : 9780315090118
Total Pages : 0 pages
Book Rating : 4.0/5 (91 download)

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Download or read book Laboratory Investigation of Coal Flotation [microform] written by A. (Allan) McIntyre and published by National Library of Canada. This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flotation behaviour of a low volatile bituminous coal from McIntyre Mines Ltd., Grande Cache, Alberta, was studied in a laboratory program. Batch tests were performed in a scaled replicate of the Wemco 120 flotation machine employed a.t the McIntyre preparation plant. The optimum flotation environment was identified with the aid of a factorial design concerned with the following process variables: aeration rate, impeller speed, collector and frother reagent dosages, and particle size distribution. Values of the three parameters of a kinetic model of flotation proposed by Kelsall and refined by Lynch were extracted for each set of test conditions. The model was executed, using the plant determined nominal residence time, to estimate yield and concentrate ash level. The model's predicted performance for nominal plant operating conditions (factorial design centre point) was in agreement with actual plant data. By extension, model predictions for optimized laboratory conditions can be transferred to the plant scale. This methodology is a powerful screening device for establishment of pilot plant scale evaluations and is useful in flowsheet design.