Flocculation of flotation tailings in presence of silicate gel and polymer
作者： Zhi-gang Yin , Sultan Ahmed Khoso , Wei Sun , Yue-hua Hu , Ji-hua Zhai
DOI: 10.1007/S11771-018-3883-8
关键词: Tailings 、 Silica gel 、 Polyacrylamide 、 Flocculation 、 Fourier transform infrared spectroscopy 、 Adsorption 、 Chemical engineering 、 Chemistry 、 Sodium silicate 、 Zeta potential
摘要: Flotation tailings were successfully flocculated in the presence of cationic polyacrylamide and silica gel. The effects various parameters such as polymer weight, charge density, pH on rate flocculation also investigated current study. mechanism flocculant was using zeta potential Fourier transform infrared (FTIR) measurements. results obtained reveal that 1) sodium silicate gel, used a binder for consolidation form primary flocs, acts an anchor adsorption these anchors formation larger flocs and, consequently, enhanced settling rate; 2) gel has faster than single-polymer owing to mechanisms neutralization bridging identified FTIR A pilot level study conducted investigate influence processed water flotation scheelite. show proposed tailing disposal method could improve scheelite recovery by 2% (approximately) reduce daily operation costs plant approximately 108.57 USD.
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