Fine coal flotation in a centrifugal field with an air sparged hydrocyclone

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Publication Type Journal Article
School or College College of Mines & Earth Sciences
Department Metallurgical Engineering
Creator Miller, Jan D.
Other Author Van Camp, M. C.
Title Fine coal flotation in a centrifugal field with an air sparged hydrocyclone
Date 1982
Description Preliminary results are reported regarding the design and development of a pilot scale air sparged hydrocyclone for cleaning fine coal 590 \xm ("28 mesh) containing 24% ash and 1.6% sulfur. The principle of separation is the flotation of hydrophobic coal particles in the centrifugal field generated by the fluid flow in the air sparged hydrocyclone as discussed in another publication. This 152-mm (6-in.) hydrocyclone has a nominal capacity of 0.9 t/h (1 tph) and experimental results suggest that separations vastly superior to a watet-only cyclone are possible. In addition the separation efficiency is as good, if not better, than that achieved with conventional flotation cells. For example, typical results indicate that 75% clean coal can be recovered at 15% ash leaving a tailing product of almost 50% ash. These experimental results coupled with the high capacity of the air sparged hydrocyclone (imagine a retention time for flotation of only two seconds compared to two minutes for conventional flotation) may represent a significant breakthrough, not only in coal preparation technology, but in the flotation of fine particles in general.
Type Text
Publisher Society for Mining, Metallurgy, and Exploration
First Page 7
Last Page 12
Subject rocyclones; Coal; Separation technology
Subject LCSH Separators (Machines); Coal preparation; Flotation
Language eng
Bibliographic Citation Miller, J. D., & Van Camp, M. C. (1982). Fine Coal Flotation in a centrifugal field with an air sparged hydrocyclone. Technical Papers, Mining Engineering, SME/AIME, 34(7-12),1575"80, November 1982.
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Format Extent 6,361,263 Bytes
Identifier ir-main,4373
ARK ark:/87278/s6xw533b
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 704205
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