Rare earth elements (REEs) found in coal are in the form of minerals, ion-substitution with clays and organically bound. Rare earth minerals (REMs) such as monazite exist in coal and have a grain size less than 5 microns. Froth flotation was successful in concentrating REMs existing in a thickener underflow material derived from Fire Clay seam coal which contained around 300 ppm of rare earth elements (REEs). Conditioning with fatty acid followed by processing using multiple stages of conventional flotation produced a final concentrate containing 2300 ppm REEs. Using a laboratory flotation column, a concentrate containing around 4700 ppm of total REEs was produced equating to an enrichment ratio of 10:1.
|Title of host publication||SME Annual Conference and Expo 2017|
|Subtitle of host publication||Creating Value in a Cyclical Environment|
|Number of pages||5|
|State||Published - 2017|
|Event||SME Annual Conference and Expo 2017: Creating Value in a Cyclical Environment - Denver, United States|
Duration: Feb 19 2017 → Feb 22 2017
|Name||SME Annual Conference and Expo 2017: Creating Value in a Cyclical Environment|
|Conference||SME Annual Conference and Expo 2017: Creating Value in a Cyclical Environment|
|Period||2/19/17 → 2/22/17|
Bibliographical notePublisher Copyright:
Copyright © 2017 by SME.
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology