Flotation of ultra-fine rare-earth minerals with selective flocculant PDHA

•PDHA is a new flocculant for recovering ultra-fine rare-earth minerals.•PDHA is promising to be used to process finely disseminated rare earth ore.•Flocculation effect of PDHA on ultra-fine bastnasite grains is apparent.•It is of great significance for saving rare earth resources. The flocculating...

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Veröffentlicht in:Minerals engineering 2014-06, Vol.60, p.23-25
Hauptverfasser: Yu, Baoqiang, Che, Xiaokui, Zheng, Qi
Format: Artikel
Sprache:eng
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Zusammenfassung:•PDHA is a new flocculant for recovering ultra-fine rare-earth minerals.•PDHA is promising to be used to process finely disseminated rare earth ore.•Flocculation effect of PDHA on ultra-fine bastnasite grains is apparent.•It is of great significance for saving rare earth resources. The flocculating performance of 1,4-benzoyl hydroxamic acid (PDHA) on ultra-fine bastnasite was studied by individual and artificially mixed minerals flotation tests, and its optimum flocculation conditions including agitation speed, conditioning period and dosage were confirmed as well. Flotation results indicate that PDHA enhances the recovery of ultra-fine rare earth minerals, and it is possible that PDHA could be used as an effective flocculant in the treatment of low grade and finely disseminated rare earth ore.
ISSN:0892-6875
1872-9444
DOI:10.1016/j.mineng.2014.01.027