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Intensification of coal flotation by means of oxyethylated reagents

Intensification of coal flotation by means of oxyethylated reagents Coals supplied for coking are enriched until the mineral content is 7–9%. With greater mechanization of coal extraction, the content of fine classes (<0.5 mm) in regular coal sent for enrichment is 15–35%. Flotation provides an effective means of enriching fine coal. However, flotation is expensive (on account of the reagent cost) and environmentally problematic. In addition, because oil-industry wastes of variable group chemical composition are used as the reagents, flotation is associated with considerable loss of organic mass of the coal and chemical compounds with the waste. The use of activators is a promising means of increasing coal extraction in the concentrate, with simultaneous decrease in the consumption of expensive flotation reagents. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Coke and Chemistry Springer Journals

Intensification of coal flotation by means of oxyethylated reagents

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References (2)

Publisher
Springer Journals
Copyright
Copyright © 2008 by Allerton Press, Inc.
Subject
Chemistry; Industrial Chemistry/Chemical Engineering
ISSN
1068-364X
eISSN
1934-8398
DOI
10.3103/S1068364X08030010
Publisher site
See Article on Publisher Site

Abstract

Coals supplied for coking are enriched until the mineral content is 7–9%. With greater mechanization of coal extraction, the content of fine classes (<0.5 mm) in regular coal sent for enrichment is 15–35%. Flotation provides an effective means of enriching fine coal. However, flotation is expensive (on account of the reagent cost) and environmentally problematic. In addition, because oil-industry wastes of variable group chemical composition are used as the reagents, flotation is associated with considerable loss of organic mass of the coal and chemical compounds with the waste. The use of activators is a promising means of increasing coal extraction in the concentrate, with simultaneous decrease in the consumption of expensive flotation reagents.

Journal

Coke and ChemistrySpringer Journals

Published: Aug 7, 2008

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