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The evaluation of N-OSS (N-oleoyl sarcosine) as an efficient collector in the flotation of spodumene from albite at low temperature: Experimental tests and atom-level calculation.
- Source :
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Journal of Molecular Liquids . Aug2024, Vol. 407, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
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Abstract
- • N-oleoyl sarcosine (N-OSS) was firstly tested as spodumene collector. • N-OSS could effectively separate spodumene from albite at low temperature. • N-OSS preferentially adsorbed on Ca-activated spodumene compared with albite. • O atoms of N-OSS strongly bonded with Ca and Al atoms on Ca-activated spodumene. • N-OSS weakly interacted with a single Ca active site on Ca-activated albite. In this study, N-OSS was explored as an efficient collector in the flotation of spodumene from albite. The flotation behaviors were examined by micro-flotation tests and the interaction mechanisms were comprehensively uncovered from atomical scale. It indicated N-OSS could effectively collect spodumene from albite at low temperature and N-OSS was more inclined to adsorb on spodumene surface than that on albite surface, thus significantly expanding the hydrophobicity difference. X-ray photoelectron spectroscopy (XPS) analysis suggested that N-OSS chemically interacted with both Ca and Al active sites on Ca-activated spodumene surface. Whereas, it weakly adsorbed on Ca-activated albite. Density functional theory (DFT) calculations reconfirmed that the adsorption of N-OSS on Ca-activated spodumene surface was more favorable than that on albite surface. The strong adsorption on spodumene was due to the hybridization reaction between the O 2p orbitals of C-O and C=O groups of N-OSS with Ca 4s orbitals as well as Al 3s orbitals on spodumene surface. Nevertheless, N-OSS weakly interacted with Ca atoms on Ca-activated albite due to steric hindrance. N-OSS exhibited selective collecting ability at low temperature in the flotation of spodumene from albite compared with conventional collector, which has promising prospects in the low-temperature flotation of spodumene from albite. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01677322
- Volume :
- 407
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Liquids
- Publication Type :
- Academic Journal
- Accession number :
- 178278562
- Full Text :
- https://doi.org/10.1016/j.molliq.2024.125110