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Froth washing applications in mechanical flotation cells
By
S. Banisi
Published in
McGill University, Graduate Student Seminar, January 1990
at
1990
Direct link:
http://kmpchemmat.ir/pii/32459
Abstract
True flotation and entrainment are two mechanisms that transfer mineral particles from the pulp into the concentrate in mechanical flotation cells. Unlike true flotation, entrainment mostly transfers gangue particles to the concentrate. Entrainment is a problem because it can significantly reduce separation performance. Froth washing is a new and inexpensive method that lessens the entrainment problems. It offers a number of metallurgical benefits (i.e. higher grades and/or recoveries) and economical benefits (i.e. reduced transportation and smelting-refining costs). Wash water increases drainage between bubbles and washes out hydraulically entrained and/or entrapped gangue particles. Froth washing has achieved significant reductions in the gangue entrainment in the lab and plant systems. Froth washing tests have been performed in different plants in Canada and the United States. This seminar presents and discusses some of the plant scale results.
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