Mechanism of Depression by Fe3+ During Hemimorphite Flotation

Minerals

卷:10

Junbo Liu¹  Qicheng Feng¹  Shuming Wen¹  Yijie Wang¹  Wenlin Nie¹  Qian Zhang¹  Yaowen Zhou¹ 

[1] State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China;

关键词: depression;    Fe³⁺;    surface;    sulfidization;    flotation;    hemimorphite;   

DOI  :  10.3390/min10090790

来源: DOAJ

【 摘 要 】

Sulfide hemimorphite can be depressed by Fe³⁺ during flotation. In this study, the depression mechanism was studied by microflotation, inductively-coupled plasma mass spectrometry, local electrochemical impedance spectroscopy (LEIS), and X-ray photoelectron spectroscopy (XPS). Flotation test results suggested that sulfated hemimorphite can be depressed by Fe³⁺ across the entire pH range. LEIS, adsorption analysis, and XPS indicated that S species were adsorbed on hemimorphite as ZnS. The sulfide film was attenuated and no adsorbed Fe species were found after treatment with Fe³⁺. The results indicate that Fe³⁺ reacts with the ZnS film, which decreases the number S species, and this leads to hemimorphite depression.

【 授权许可】

Unknown