Collectorless flotation of marmatite with pine oil
来源期刊：Rare Metals2017年第2期
论文作者：Zheng-Bin Deng Xiong Tong Alejandro López Valdivieso Xiao Wang Xian Xie
文章页码：147 - 154
摘 要：The interaction between pine oil and marmatite without collectors and activators was investigated by flotation,scanning electron microscope and energy-dispersive spectrometer（SEM-EDS）,infrared（IR） spectroscopy,Zeta potential,and first-principle theory calculations.The flotation results show that marmatite exhibits considerable floatability with the addition of pine oil.SEM-EDS results show that carbon atomic ratios on the surface are significantly high,which suggests that the flotation of marmatite is caused by the adsorption of pine oil.Further evidence of the adsorption mechanism was given by IR,and Zeta potential examining pine oil depends on the physical adsorption on the surface independently.The first-principle theory calculations indicate that pine oil molecule adsorbs on Zn and Fe atom surfaces by ionic bond and covalent bond of adsorption energies of-1.23and-1.51 eV,respectively.P orbital of O atom,s orbital of Zn atom,and d orbital of Fe are the major participants.
Zheng-Bin Deng1,2,3，Xiong Tong1,2,3，Alejandro López Valdivieso4，Xiao Wang1,2,3，Xian Xie1,2,3
1. Faculty of Land and Resource Engineering,Kunming University of Science and Technology2. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization3. Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources4. Laboratory of Surface Chemistry Institute of Metallurgy,Universidad Autonoma de San Luis Potosi
摘 要：The interaction between pine oil and marmatite without collectors and activators was investigated by flotation,scanning electron microscope and energy-dispersive spectrometer（SEM-EDS）,infrared（IR） spectroscopy,Zeta potential,and first-principle theory calculations.The flotation results show that marmatite exhibits considerable floatability with the addition of pine oil.SEM-EDS results show that carbon atomic ratios on the surface are significantly high,which suggests that the flotation of marmatite is caused by the adsorption of pine oil.Further evidence of the adsorption mechanism was given by IR,and Zeta potential examining pine oil depends on the physical adsorption on the surface independently.The first-principle theory calculations indicate that pine oil molecule adsorbs on Zn and Fe atom surfaces by ionic bond and covalent bond of adsorption energies of-1.23and-1.51 eV,respectively.P orbital of O atom,s orbital of Zn atom,and d orbital of Fe are the major participants.
关键词：
