Journal
JOURNAL OF RARE EARTHS
Volume 32, Issue 5, Pages 476-486Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1002-0721(14)60096-X
Keywords
allanite; flotation; surface chemistry; zeta potential; bubble-particle attachment; rare earths
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Avalon Rare Metals through the Collaborative Research and Development (CRD) program [444537-12]
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This paper investigated the physicochemical properties of allanite, a RE-silicate, by measuring zeta potential in the absence and presence of three different flotation collectors (benzohydroxamic acid, sodium oleate and dodecylamine). This data was then verified by microflotation experiments and with bubble-particle attachment pictures. The investigated properties of allanite were compared to those of quartz, a common gangue mineral in many RE deposits. The results of this work indicated that only dodecylamine was able to achieve a selective separation of allanite and quartz. This was accomplished by lowering the dodecylamine dosage so that only quartz was recovered by microflotation.
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