Ultra-Fine Centrifugal Concentration of Bastnaesite Ore
Abstract
Historically, the ability to effectively separate carbonate gangue from bastnaesite via flotation has frequently proven to be challenging without sacrificing significant rare earth oxide (REO) grade or recovery. However, in light of the fact that the rare earth bearing minerals often exhibit higher specific gravities than the carbonate gangue, the possibility exists that the use of gravity separation could be used to achieve such a selective separation. This however is complicated by the fact that, in cases such as this study when the liberation size is finer than 50 µm, most traditional gravity separation methods become increasingly challenging. The purposes of this study is to determine the applicability of gravity concentrators to beneficiate bastnaesite from deleterious calcite bearing flotation feed material. Via the use of a UF Falcon, it was possible to achieve rougher gravity REO recoveries approaching the upper 80% range while rejecting on the order of 30% of the total calcium. In terms of purely REO recovery, this represents a significant improvement over results obtained via a traditional Falcon in previously reported studies.
- Authors:
-
- Colorado School of Mines, Golden, CO (United States); Tetra Tech, Inc., Golden, CO (United States)
- Colorado School of Mines, Golden, CO (United States)
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States). Critical Materials Institute (CMI)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Materials & Manufacturing Office (AMMTO)
- OSTI Identifier:
- 1983124
- Grant/Contract Number:
- AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Metals
- Additional Journal Information:
- Journal Volume: 11; Journal Issue: 10; Journal ID: ISSN 2075-4701
- Publisher:
- MDPI
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; rare earth elements; bastnaesite; gravity concentration; UF Falcon concentrator
Citation Formats
Norgren, Alex, and Anderson, Corby. Ultra-Fine Centrifugal Concentration of Bastnaesite Ore. United States: N. p., 2021.
Web. doi:10.3390/met11101501.
Norgren, Alex, & Anderson, Corby. Ultra-Fine Centrifugal Concentration of Bastnaesite Ore. United States. https://doi.org/10.3390/met11101501
Norgren, Alex, and Anderson, Corby. Thu .
"Ultra-Fine Centrifugal Concentration of Bastnaesite Ore". United States. https://doi.org/10.3390/met11101501. https://www.osti.gov/servlets/purl/1983124.
@article{osti_1983124,
title = {Ultra-Fine Centrifugal Concentration of Bastnaesite Ore},
author = {Norgren, Alex and Anderson, Corby},
abstractNote = {Historically, the ability to effectively separate carbonate gangue from bastnaesite via flotation has frequently proven to be challenging without sacrificing significant rare earth oxide (REO) grade or recovery. However, in light of the fact that the rare earth bearing minerals often exhibit higher specific gravities than the carbonate gangue, the possibility exists that the use of gravity separation could be used to achieve such a selective separation. This however is complicated by the fact that, in cases such as this study when the liberation size is finer than 50 µm, most traditional gravity separation methods become increasingly challenging. The purposes of this study is to determine the applicability of gravity concentrators to beneficiate bastnaesite from deleterious calcite bearing flotation feed material. Via the use of a UF Falcon, it was possible to achieve rougher gravity REO recoveries approaching the upper 80% range while rejecting on the order of 30% of the total calcium. In terms of purely REO recovery, this represents a significant improvement over results obtained via a traditional Falcon in previously reported studies.},
doi = {10.3390/met11101501},
journal = {Metals},
number = 10,
volume = 11,
place = {United States},
year = {Thu Sep 23 00:00:00 EDT 2021},
month = {Thu Sep 23 00:00:00 EDT 2021}
}
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