Rate of water transfer to flotation froth in the flotation of low-rank coal that also requires the use of oily collector


Boylu F. , LASKOWSKI J. S.

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, vol.83, pp.125-131, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 83
  • Publication Date: 2007
  • Doi Number: 10.1016/j.minpro.2007.07.003
  • Title of Journal : INTERNATIONAL JOURNAL OF MINERAL PROCESSING
  • Page Numbers: pp.125-131

Abstract

The entrainment of hydrophilic gangue particles in flotation is related to the amount of water reporting to the froth. It is well established that the amount of water reported to the froth is controlled by frother concentration. As it is shown in this paper, in the flotation systems in which emulsified oily collector is also used (e.g. coal flotation), solids recovery strongly depends on the collector dosages as also does the water recovery. While the tests carried out at low (1000 g/t) and high (8000 g/t) oil dosages show different effects of frother additions on water transfer rates to the froth, all the experimental points when water transfer rates are plotted versus solids transfer rates to the froth converge on one single curve. This suggests that the effect of both the frother and collector on water transfer rates is first of all determined by the transfer of solids to the froth, and thus by the effect of these two agents on the solids transfer to froth. (c) 2007 Elsevier B.V. All rights reserved.