The Effect of Physical Separation and Calcination on Enrichment and Recovery of Critical Elements from Coal Gangue

The Effect of Physical Separation and Calcination on Enrichment and Recovery of Critical Elements from Coal Gangue

Critical metallic elements in coal gangue have great utilization potential, especially due to the current shortage of these metals. This paper focused on examining the feasibility of physical separation (screening and float-sink tests) and calcination treatment for the enrichment of critical element...

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Veröffentlicht in:Minerals (Basel) 2022-11, Vol.12 (11), p.1371
Hauptverfasser: Zhang, Lei, Chen, Hangchao, Pan, Jinhe, Wen, Zhiping, Shi, Shulan, Long, Xin, Zhou, Changchun
Format: Artikel
Sprache:eng
Schlagworte:
Acid leaching
Acids
By products
Chemical extraction
Coal
Coal mining
Density
Elements
Enrichment
Gallium
Gangue
Leaching
Metals
Methods
Organic matter
Particle size
Rare earth elements
Recovery
Roasting
Screening
Separation
Tests
Trace elements
Yttrium
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Zusammenfassung:Critical metallic elements in coal gangue have great utilization potential, especially due to the current shortage of these metals. This paper focused on examining the feasibility of physical separation (screening and float-sink tests) and calcination treatment for the enrichment of critical elements (Li, Ga, and rare earth elements plus yttrium (REY)) from coal gangue. The impacts of these enrichment methods on the acid leaching recovery of these elements were then studied. Screening tests indicated that Li and Ga were enriched in >0.125 mm size fraction and the content of REY was highest in
ISSN:2075-163X
2075-163X
DOI:10.3390/min12111371