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Minerals 2017, 7(11), 221; https://doi.org/10.3390/min7110221

Study on the Dispersion Mechanism of Citric Acid on Chlorite in Hematite Reverse Flotation System

School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
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Received: 29 September 2017 / Revised: 31 October 2017 / Accepted: 9 November 2017 / Published: 13 November 2017
(This article belongs to the Special Issue Flotation Chemistry)
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Abstract

The adhesion behavior between particles in the pulp will seriously affect the index of concentrate. In this paper, the effect of citric acid on chlorite in hematite reverse flotation system was studied. The flotation test and settlement test of artificial mixed ore showed that a lower dosage of citric acid could significantly improve the removal rate of chlorite. The mineral contact angle measurement and zeta potential analysis, combined with the extended DLVO theory showed that chlorite is easily adsorbed on the surface of hematite, results in a lower removal rate, and the phenomenon was analyzed by a laser particle size analyzer and optical microscope. The results showed that citric acid can reduce the apparent grain size of artificial mixed ore and improve the dispersion degree of pulp by changing the wettability and surface potential of the minerals, thus increased the removal rate of chlorite. View Full-Text
Keywords: hematite; chlorite; citric acid; dispersion mechanism; reverse flotation hematite; chlorite; citric acid; dispersion mechanism; reverse flotation
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Yin, W.; Fu, Y.; Yao, J.; Yang, B.; Cao, S.; Sun, Q. Study on the Dispersion Mechanism of Citric Acid on Chlorite in Hematite Reverse Flotation System. Minerals 2017, 7, 221.

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