Abstract
The escalating demand for zinc resources has been positioning zinc oxide ore as an invaluable supplementary resource to cater to zinc supply requirements. There is now a growing focus on optimizing the efficient flotation of zinc oxide ore. In this study, experiments were conducted using dodecylamine (DDA) and octyl hydroxamic acid (OHA) as combined collectors, along with pre-sulfidization by sodium sulfide, to enhance smithsonite flotation. The use of the DDA–OHA combined collector resulted in a significant improvement of over 25% in the recovery when compared with the use of DDA as a single collector. Adsorption capacity measurements and zeta potential measurements provided evidence for the synergistic effect of DDA and OHA. Solution surface tension measurements indicated that the combined collector system helped stabilize the flotation foam. Analysis of treated smithsonite by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy further verified the chemical and physical adsorption of DDA and OHA on the surface of smithsonite. The measurement of contact angles of treated smithsonite showed that the combined collector effectively increased the hydrophobicity of the mineral. Molecular dynamics simulations suggested that OHA and DDA undergo multilayer adsorption on the sulfidized smithsonite (101) surface and that the presence of OHA promotes the adsorption of DDA.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
