Reducing entrainment of sericite in fine flaky graphite flotation using polyaluminum chloride
Qiu Yangshuai 1,   Lingyan Zhang 1  
,   Kangkang Sun 2,   Ye Li 1,   Qian Yupeng 1
 
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1
Wuhan University of Technology
2
The University of Queensland
CORRESPONDING AUTHOR
Lingyan Zhang   

Wuhan University of Technology
Publication date: 2019-07-30
 
Physicochem. Probl. Miner. Process. 2019;55(5):1108–1119
 
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ABSTRACT
Polyaluminum chloride (PACl) was introduced as a flocculant to reduce the entrainment of sericite gangue in fine flaky graphite flotation. The dispersion and aggregation behaviours of sericite and fine flaky graphite in the absence and presence of PACl were studied by settling experiments and verified by optical microscope images. Results of batch flotation tests for artificial mixtures indicated that the addition of PACl decreased the recovery of sericite gangue and the water recovery. Zeta potential measurements, FTIR and XPS analyses revealed that PACl selectively aggregated sericite particles in terms of charge neutralization and precipitate enmeshment.
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ISSN:1643-1049