A Technique for Evaluating Floatability of Coal Fines, Using Methanol Solutions
作者:
D. T. HORNSBY,
J. LEJA,
期刊:
Coal Preparation
(Taylor Available online 1984)
卷期:
Volume 1,
issue 1
页码: 1-19
ISSN:0734-9343
年代: 1984
DOI:10.1080/07349348408945536
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Small scale “frothless” flotation tests were carried out on narrow size fractions of several coal samples, in a series of aqueous methanol solutions of decreasing surface tension. The results presented as variation of cumulative yield versus cumulative ash content constitute optimum flotation response curves analogous to washability curves in sink-float tests. Flotation behaviour of different coals from the East Kootenay coalfield, British Columbia, was assessed relative to petrographic composition, rank, extent of weathering and inherent ash content. Differences in coal floatability caused by small degrees of weathering could be detected despite lack of differentiation by conventional tests on bulk coal properties.
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