| 锌浸出渣的还原焙烧和人工硫化矿物浮选过程中硫酸铅和硫酸锌的反应行为 |
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| 作者单位： | State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,China;School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,China;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China |
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| 基金项目： | the Foundation of Yunnan's Education Min-istry;the Yun-nan Province Applied Basic Research Project;China ;This work was financially supported by the National Nat-ural Science Foundation of China ;and the Testing and Analyzing Funds of Kunming University of Science and Technology |
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| 摘 要： | To evaluate the feasibility of recovering Pb and Zn sulfides and Ag-containing minerals from Zn leaching residue by the process of reduction roasting followed by flotation, the reaction behaviors of Pb and Zn sulfates during this process were investigated. Chemical analysis showed that the transformation ratios of PbSO4 and ZnSO4 could reach 65.51% and 52.12%, respectively, after reduction roasting, and the introduction of a sulfidation agent could improve the transformation ratios of these sulfates. scanning electron microscopy–energy dispersive spectroscopy (SEM–EDS) revealed that temperature obviously affects the particle size, crystal growth, and morphology of the artificial Pb and Zn sulfide minerals. Particle size analysis demonstrated that the particle size of the materials increases after roasting. Flotation tests revealed that a flotation concentrate composed of 12.01wt% Pb, 27.78wt% Zn, and 6.975 × 10?2wt% Ag with recoveries of 60.54%, 29.24%, and 57.64%, respectively, could be obtained after roasting.
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| 关 键 词： | ,,,,,,, |
Reaction behaviors of Pb and Zn sulfates during reduction roasting of Zn leaching residue and flotation of artificial sulfide minerals |
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| Authors: | Yong-xing Zheng Jilai Ning Wei Liu Pan-jin Hu Jin-fang Lü Jie Pang |
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| Abstract: | To evaluate the feasibility of recovering Pb and Zn sulfides and Ag-containing minerals from Zn leaching residue by the process of reduction roasting followed by flotation, the reaction behaviors of Pb and Zn sulfates during this process were investigated. Chemical analysis showed that the transformation ratios of PbSO4 and ZnSO4 could reach 65.51％ and 52.12％, respectively, after reduction roasting, and the in-troduction of a sulfidation agent could improve the transformation ratios of these sulfates. scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) revealed that temperature obviously affects the particle size, crystal growth, and morphology of the artificial Pb and Zn sulfide minerals. Particle size analysis demonstrated that the particle size of the materials increases after roasting. Flotation tests revealed that a flotation concentrate composed of 12.01wt％ Pb, 27.78wt％ Zn, and 6.975 × 10?2wt％ Ag with recoveries of 60.54％, 29.24％, and 57.64％, respectively, could be obtained after roasting. |
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| Keywords: | zinc leaching residue reduction roasting flotation Pb and Zn sulfates artificial sulfides |
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