Role and mechanism of oxidizer in flotation separation of galena and sphalerite using locust bean gum as depressant

被引：0
|
作者：
Feng B. [1 ]
Guo Y. [1 ]
Wang T. [1 ]
Peng J. [1 ]
Zhang L. [1 ]
Zhong C. [1 ]
Wang H. [1 ]
机构：
[1] Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2020年 / 51卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Depression mechanism; Flotation; Galena; KMnO[!sub]4[!/sub; Locust bean gum; Sphalerite;
D O I：
10.11817/j.issn.1672-7207.2020.01.001
中图分类号：
学科分类号：
摘要：
The effect of oxidizer KMnO4 on the flotation separation of galena and sphalerite using locust bean gum as depressant was studied and the mechanism that KMnO4 strengthens the depression effect of locust bean gum on sphalerite was discussed through flotation test, adsorption test and X-ray photoelectron spectroscopy analysis(XPS). The results show that both galena and sphalerite have good flotability when potassium butyl xanthate is used as collector. Locust bean gum has strong depression effect on galena and sphalerite, and thus the separation of galena and sphalerite is difficult. In the presence of oxidizer KMnO4, a small amount of locust bean gum can depress sphalerite completely, but has weak depression effect on galena. Therefore, the flotation separation of galena and sphalerite can be achieved by using KMnO4 and locust bean gum together. The locust bean gum adsorbes on sphalerite surface mainly through chemical reaction with the oxidized products generated on sphalerite surface. The addition of KMnO4 results in more oxidized products on sphalerite surface, which significantly increases the adsorption amount of locust bean gum and results in its enhanced inhibitory effect on sphalerite. © 2020, Central South University Press. All right reserved.
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页码：1 / 7
页数：6
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