Abstract
Application of a novel ionic liquid as flotation reagent in the flotation separation of quartz and magnesite has been investigated. The flotation behavior and surface properties of quartz and magnesite flotation with dodecyl trimethyl ammonium-diethylphosphonic acid (N12111-DEPA) as flotation reagent were studied by microbubble flotation experiments, contact angle, fourier transforming infrared spectra (FT-IR), and X ray photoelectron spectroscopy (XPS) spectrometer analysis. The micro-flotation of single mineral results demonstrated that N12111-DEPA exhibited a good collection selectivity for quartz. Under the optimum flotation conditions of pulp pH 7.0 and 15 mg/L N12111-DEPA, the grade and recovery of MgO in concentrate were 41.21 % and 97.45 %, respectively. The analysis of contact angle shown that N12111-DEPA increased the surface hydrophobicity of quartz and decreases the surface hydrophobicity of magnesite, thus increasing the difference of floatability between the two minerals. The analysis of FT-IR and XPS confirmed that the cations of N12111-DEPA are mainly adsorbed on quartz surface through electrostatic affinity, while the anions of N12111-DEPA are mainly adsorbed on magnesite surface through chelation with exposed magnesium sites on mineral surface. This demonstrated that N12111-DEPA had a good application potential in reverse flotation separation of magnesite and quartz.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.