Flotation of coal and sulphur from South African ultrafine colliery wastes
Journal Article
2013
Permanent link to this Item
Authors
Journal Title
Journal of the Southern African Institute of Mining and Metallurgy
Link to Journal
Journal ISSN
Volume Title
Publisher
Southern African Institute of Mining and Metallurgy
Publisher
University of Cape Town
License
Series
Abstract
Flotation of coal and sulphur from a typical South African ultrafine
colliery waste has been achieved in laboratory-scale batch flotation
tests, using dodecane, kerosene, and oleic acid as coal collectors, and
xanthates to float the sulphide minerals (with the aid of dextrin as a
coal depressant). The use of oleic acid as collector, in conjunction
with MIBC frother, produced a coal yield of 56 per cent (much more
than was obtained with dodecane or kerosene) at an ash content of
18 per cent, from a feed ash of 34.4 per cent; and a low- sulphur
tailings. Sulphide flotation using potassium xanthate (PAX)
recovered 26.3 per cent of the total sulphur in the concentrate.
Staged addition of xanthate increased the total sulphur recovery to
42.1 per cent and reduced the sulphur content of the tailing further.
Description
Reference:
Mbamba, C. K., Franzidis, J. P., Harrison, S. T. L., & Broadhurst, J. L. (2013). Flotation of coal and sulphur from South African ultrafine colliery wastes. Journal of the Southern African Institute of Mining and Metallurgy, 113(5), 399-405.