Dissolution Patterns of Fe<sup>3+</sup> and Mg<sup>2+</sup> from the Surfaces of Specularite and Chlorite and Their Effects on Floatability

CHEN Zhou; YU Xi; YANG Ting; ZHANG Pengpeng; LI Mingyang

doi:10.13779/j.cnki.issn1001-0076.2025.02.009

2025 Vol. 45, No. 2

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Article navigation > Conservation and Utilization of Mineral Resources > 2025 > 45(2): 108-115

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CHEN Zhou, YU Xi, YANG Ting, ZHANG Pengpeng, LI Mingyang. Dissolution Patterns of Fe3+ and Mg2+ from the Surfaces of Specularite and Chlorite and Their Effects on Floatability[J]. Conservation and Utilization of Mineral Resources, 2025, 45(2): 108-115. doi: 10.13779/j.cnki.issn1001-0076.2025.02.009

Citation:

CHEN Zhou, YU Xi, YANG Ting, ZHANG Pengpeng, LI Mingyang. Dissolution Patterns of Fe³⁺ and Mg²⁺ from the Surfaces of Specularite and Chlorite and Their Effects on Floatability[J]. Conservation and Utilization of Mineral Resources, 2025, 45(2): 108-115. doi: 10.13779/j.cnki.issn1001-0076.2025.02.009

Dissolution Patterns of Fe³⁺ and Mg²⁺ from the Surfaces of Specularite and Chlorite and Their Effects on Floatability

1.
College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, Liaoning, China
2.
Sinosteel Maanshan General Institute of Mining Research Co., Ltd., Maanshan 243000, China
3.
School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, China

More Information

Corresponding author: LI Mingyang, my.l@ahut.edu.cn

Received Date: 30 August 2024

Publish Date: 15 April 2025

Abstract

Abstract

During the separation process of specularite/chlorite, the dissolution of metal ions on the mineral surface can affect the floatability of the minerals. Using ICP, conductivity measurements, and single mineral flotation tests, the dissolution patterns of Fe³⁺ and Mg²⁺ ions from the surfaces of specularite and chlorite and their effect on floatability were investigated y. Additionally, by combining Zeta potential measurements and lgc−pH analysis, the inhibition mechanisms of Fe³⁺ and Mg²⁺ on specularite and chlorite were studied. The results showed that Fe³⁺ and Mg²⁺ exhibited a trend of increasing followed by decreasing with dissolution time, and the dissolution amount of Fe³⁺ from the chlorite surface was significantly higher than that of Fe³⁺. In addition, the total ion concentration in the solution decreased continuously as the pH of the solution increased. Both Fe³⁺ and Mg²⁺ had certain inhibitory effect on specularite and chlorite, but Fe³⁺ had a stronger inhibitory effect. Under conditions where the Fe³⁺ concentration was 3.11 mg/L and pH=6, the recovery rates of specularite and chlorite decreased to 10.23% and 13.35%, respectively. Fe³⁺ primarily inhibits minerals through the adsorption of hydrophilic Fe(OH)₃ precipitates, while Mg²⁺ mainly increases the electrostatic repulsion between mineral particles and DDA through adsorption in the form of Mg²⁺, resulting in decreased mineral floatability.
- specularite /
- chlorite /
- surface ion /
- flotation /
- inhibition

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References

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