Effect of Fe<sup>3+</sup> and Sodium Silicate As Combination Inhibitors on Flotation Separation of Fluorite and Calcite

NING Jiangfeng; LI Maolin; CUI Rui; YAO Wei; SHI Jia; LI Ruijie

doi:10.13779/j.cnki.issn1001-0076.2020.06.010

2020 Vol. 40, No. 6

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Article navigation > Conservation and Utilization of Mineral Resources > 2020 > 40(6): 64-70

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NING Jiangfeng, LI Maolin, CUI Rui, YAO Wei, SHI Jia, LI Ruijie. Effect of Fe3+ and Sodium Silicate As Combination Inhibitors on Flotation Separation of Fluorite and Calcite[J]. Conservation and Utilization of Mineral Resources, 2020, 40(6): 64-70. doi: 10.13779/j.cnki.issn1001-0076.2020.06.010

Citation:

NING Jiangfeng, LI Maolin, CUI Rui, YAO Wei, SHI Jia, LI Ruijie. Effect of Fe³⁺ and Sodium Silicate As Combination Inhibitors on Flotation Separation of Fluorite and Calcite[J]. Conservation and Utilization of Mineral Resources, 2020, 40(6): 64-70. doi: 10.13779/j.cnki.issn1001-0076.2020.06.010

Effect of Fe³⁺ and Sodium Silicate As Combination Inhibitors on Flotation Separation of Fluorite and Calcite

1.
College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
2.
Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan 430081, China
3.
Changsha Research Institute of Mining and Metallurgy Limited Liability Company, Changsha 410012, China

Received Date: 21 October 2020

Publish Date: 25 December 2020

Abstract

Abstract

The separation of fluorite and calcite is difficult, because there are Ca²⁺ active sites on the surface of fluorite and calcite, and the surface properties of the two minerals are similar. Through single mineral flotation test, adsorption amount measurement, Zeta potential measurement and chemical calculation of flotation solution, Fe³⁺ was introduced and mixed with sodium silicate to study the effect of the combined inhibitor on flotation separation of fluorite and calcite and its mechanism. Flotation test results show that, Fe- sodium silicate selectively inhibits the flotation of calcite compared with sodium silicate, and realizes the separation of the two minerals. The mechanism test results show that the Fe- sodium silicate polymer formed by Fe²⁺ and sodium silicate in solution and the hydrolyzed component Si(OH)₄ have strong adsorption on the surface of calcite, which hinders the further adsorption of sodium oleate and thus inhibits the flotation of calcite.
- fluorite /
- calcite /
- Fe³⁺ /
- sodium silicate /
- flotation separation

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References

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