Selective flotation separation of andalusite and quartz and its mechanism

Yan-ping Niu; Chuan-yao Sun; Wan-zhong Yin; Xing-rong Zhang; Hong-feng Xu; Xu Zhang

doi:10.1007/s12613-019-1842-5

Volume 26 Issue 9

Sep. 2019

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2019 > 26(9): 1059-1068

Yan-ping Niu, Chuan-yao Sun, Wan-zhong Yin, Xing-rong Zhang, Hong-feng Xu, and Xu Zhang, Selective flotation separation of andalusite and quartz and its mechanism, Int. J. Miner. Metall. Mater., 26(2019), No. 9, pp. 1059-1068. https://doi.org/10.1007/s12613-019-1842-5

Cite this article as:

Yan-ping Niu, Chuan-yao Sun, Wan-zhong Yin, Xing-rong Zhang, Hong-feng Xu, and Xu Zhang, Selective flotation separation of andalusite and quartz and its mechanism, Int. J. Miner. Metall. Mater., 26(2019), No. 9, pp. 1059-1068. https://doi.org/10.1007/s12613-019-1842-5

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Research Article

Selective flotation separation of andalusite and quartz and its mechanism

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Corresponding author:
Wan-zhong Yin E-mail: yinwanzhong@mail.neu.edu.cn
Received: 15 February 2019; Revised: 9 May 2019; Accepted: 13 May 2019

Abstract

Abstract

The separation of andalusite and quartz was investigated in the sodium oleate flotation system, and its mechanism was studied by solution chemical calculation, zeta-potential tests, Fourier transform infrared spectroscopic (FTIR), and X-ray photoelectron spectroscopic (XPS). The flotation tests results show that FeCl₃·6H₂O has a strong activation effect on andalusite and quartz and citric acid has a strong inhibitory effect on activated quartz, thus increasing the floatability difference between quartz and andalusite when the pulp pH is approximately 8. The FTIR, Zeta potential, and XPS analyses combined with the chemical calculation of flotation reagent solutions demonstrate that Fe forms hydroxide precipitates on the surface of andalusite and quartz and that oleate anions and metal ions adsorb onto the surface of the minerals. The elements Al and Fe can be chemically reacted. The anions in citric acid have different degrees of dissolution of Fe on the andalusite and quartz surfaces, thereby selectively eliminating the activation of the elemental Fe on andalusite and quartz and increasing the floatability of andalusite, leading to a better separation effect between andalusite and quartz.
- andalusite;
- quartz;
- flotation mechanism;
- zeta potential;
- Fourier infrared spectrum analysis;
- X-ray photoelectron energy spectrum analysis

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References

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