1. A novel decyl-salicyl hydroxamic acid flotation collector: Its synthesis and flotation separation of malachite against quartz
- Author
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Xiaotong Zhou, Li Fangxu, Lin Rixiao, and Gang Zhao
- Subjects
Copper oxide ,Hydroxamic acid ,Chemistry ,General Chemical Engineering ,Sodium ,chemistry.chemical_element ,Malachite ,02 engineering and technology ,Isobutyl xanthate ,021001 nanoscience & nanotechnology ,chemistry.chemical_compound ,020401 chemical engineering ,X-ray photoelectron spectroscopy ,visual_art ,visual_art.visual_art_medium ,0204 chemical engineering ,0210 nano-technology ,Selectivity ,Quartz ,Nuclear chemistry - Abstract
In this study, a novel decyl-salicyl hydroxamic acid (DSHA) collector was synthesized and applied to a malachite flotation. Subsequently, its flotation performance on malachite was studied through micro- and batch-flotation tests, as well as through zeta-potential and X-ray photoelectron spectroscopy (XPS) analyses. The results of micro-flotation tests indicate that DSHA exhibits a powerful ability to collect malachite and a satisfactory selectivity against quartz. The batch-flotation tests also prove that DSHA is an effective collector for copper oxide ore. Furthermore, mixed collectors of DSHA and sodium isobutyl xanthate (SIBX) achieved a better selective separation of CuO than individual DSHA, SIBX, or salicyl hydroxamic acid (SHA). The results of a zeta-potential analysis infers that DSHA may chemisorb on malachite.The XPS analysis results provide clear evidence that DSHA adsorbs on malachite through the co-adsorption mode.
- Published
- 2020