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A novel surfactant 2-amino-6-decanamidohexanoic acid: Flotation performance and adsorption mechanism to diaspore
- Source :
- Minerals Engineering. 93:16-23
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- In this paper, a novel surfactant, 2-amino-6-decanamidohexanoic acid (AHA-10) was synthesized and used as a collector for flotation separation of diaspore and aluminosilicate minerals. The adsorption mechanism of AHA-10 onto diaspore was also evaluated by FTIR spectra, zeta potential, XPS and solution chemistry. The flotation results demonstrated that AHA-10 exhibited superior collecting power to diaspore and good selectivity against kaolinite and illite, and could effectively recover diaspore from bauxite ores contained aluminosilicate minerals at pH around 10. The analyses of FTIR spectra, zeta potential and solution chemistry inferred that at pH around 10, AHA-10 might chemisorb on diaspore surfaces by formation of Al O and Al N bonds. AHA-10’s unique properties, such as characteristic bond model to Al atoms on diaspore surfaces, double hydrophobic groups and intermolecular hydrogen bonds between neighboring AHA-10 molecules coated on diaspore surfaces, rendering a weakening surface energy and enhancing hydrophobicity of diaspore particles.
- Subjects :
- Chemistry
Hydrogen bond
Mechanical Engineering
Mineralogy
02 engineering and technology
General Chemistry
engineering.material
Diaspore
010402 general chemistry
021001 nanoscience & nanotechnology
Geotechnical Engineering and Engineering Geology
01 natural sciences
Surface energy
0104 chemical sciences
Bauxite
Adsorption
Chemical engineering
Control and Systems Engineering
Aluminosilicate
engineering
Zeta potential
Kaolinite
0210 nano-technology
Subjects
Details
- ISSN :
- 08926875
- Volume :
- 93
- Database :
- OpenAIRE
- Journal :
- Minerals Engineering
- Accession number :
- edsair.doi...........b95649de3dbcfe4dd0ac224cff463c22