Effects of Galvanic Interaction between Chalcopyrite and Monoclinic Pyrrhotite on Their Flotation Separation

Yang, Liu; Zhou, Xiaowen; Yan, Huashan; Zhang, Hongliang; Liu, Xiaohe; Qiu, Tingsheng

doi:10.3390/min12010039

Open AccessFeature PaperArticle

Effects of Galvanic Interaction between Chalcopyrite and Monoclinic Pyrrhotite on Their Flotation Separation

by

Liu Yang

¹,

Xiaowen Zhou

¹,

Huashan Yan

^1,2,*

,

Hongliang Zhang

³,

Xiaohe Liu

⁴ and

Tingsheng Qiu

^1,*

¹

College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

²

State Key Laboratory of Mineral Processing, Beijing 100814, China

³

Dexing Copper Mine Dashan Concentrator, Jiangxi Copper Group, Shangrao 334200, China

⁴

Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, China

^*

Authors to whom correspondence should be addressed.

Minerals 2022, 12(1), 39; https://doi.org/10.3390/min12010039

Submission received: 25 November 2021 / Revised: 21 December 2021 / Accepted: 24 December 2021 / Published: 28 December 2021

(This article belongs to the Special Issue Recent Advances in Copper Ore Processing and Extraction)

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Abstract

The galvanic interaction between chalcopyrite and monoclinic pyrrhotite and its effect on flotation separation were studied using monomineral flotation tests, adsorption capacity tests, X-ray photoelectron spectroscopy (XPS) characterization, and scanning electron microscopy (SEM) test. These results showed that the interaction promoted the reduction of O₂ on the cathodic chalcopyrite surface and accelerated the generation of Fe(OH)₃, which was not conducive to collector adsorption; hence, the flotation recovery decreased by 10–16%. On the other hand, galvanic interaction accelerated the oxidation of S on the anodic monoclinic pyrrhotite surface to S₀ or SO₄²⁻ and produced a large amount of H⁺, thus preventing the formation of Fe(OH)₃. Meanwhile, the Cu²⁺ eluted from chalcopyrite surface activated monoclinic pyrrhotite; hence, the flotation recovery increased by 3–10%. Galvanic interaction reduced the floatability difference between the two minerals, and the separation difficulty was significantly increased. Even with an increase in the amount of lime, the separation could not be improved.

Keywords: chalcopyrite; monoclinic pyrrhotite; galvanic interaction; flotation; interactive influence

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MDPI and ACS Style

Yang, L.; Zhou, X.; Yan, H.; Zhang, H.; Liu, X.; Qiu, T. Effects of Galvanic Interaction between Chalcopyrite and Monoclinic Pyrrhotite on Their Flotation Separation. Minerals 2022, 12, 39. https://doi.org/10.3390/min12010039

AMA Style

Yang L, Zhou X, Yan H, Zhang H, Liu X, Qiu T. Effects of Galvanic Interaction between Chalcopyrite and Monoclinic Pyrrhotite on Their Flotation Separation. Minerals. 2022; 12(1):39. https://doi.org/10.3390/min12010039

Chicago/Turabian Style

Yang, Liu, Xiaowen Zhou, Huashan Yan, Hongliang Zhang, Xiaohe Liu, and Tingsheng Qiu. 2022. "Effects of Galvanic Interaction between Chalcopyrite and Monoclinic Pyrrhotite on Their Flotation Separation" Minerals 12, no. 1: 39. https://doi.org/10.3390/min12010039

APA Style

Yang, L., Zhou, X., Yan, H., Zhang, H., Liu, X., & Qiu, T. (2022). Effects of Galvanic Interaction between Chalcopyrite and Monoclinic Pyrrhotite on Their Flotation Separation. Minerals, 12(1), 39. https://doi.org/10.3390/min12010039

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Effects of Galvanic Interaction between Chalcopyrite and Monoclinic Pyrrhotite on Their Flotation Separation

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