Influence and Mechanism of Metal Ions on Flotation of Molybdenite

doi:10.12068/j.issn.1005-3026.2016.07.022

Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (7): 1013-1016.DOI: 10.12068/j.issn.1005-3026.2016.07.022

• Resources & Civil Engineering • Previous Articles Next Articles

Influence and Mechanism of Metal Ions on Flotation of Molybdenite

YUAN Zhi-tao¹， ZHANG Qi-dong^1,2， LIU Jiong-tian^1,3

1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China； 2. National Engineering Laboratory of Biohydrometallurgy， General Research Institute for Nonferrous Metals， Beijing 100088， China; 3. School of Chemical Engineering and Energy， Zhengzhou University， Zhengzhou 450001， China.

Received:2015-06-10 Revised:2015-06-10 Online:2016-07-15 Published:2016-07-13
Contact: ZHANG Qi-dong
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Abstract

Abstract: The influences and mechanism of metal ions on the flotation of molybdenite were investigated by flotation experiments and measurements of zeta potential with single molybdenite. The results show that Ca²⁺， Cu²⁺， Pb²⁺and Fe³⁺can adsorb on the surface of molybdenite. Ions like Cu²⁺， Pb²⁺and Fe³⁺ can depress flotation of molybdenite while Ca²⁺ shows no significant influence. Solution chemistry calculations confirm that the hydrophobic surfaces of molybdenite become hydrophilic and molybdenite flotation is depressed within certain pH range due to hetero-coagulation of the metal hydroxides of Cu²⁺， Pb²⁺and Fe³⁺on both the polar and nonpolar surfaces of molybdenite.

Key words: molybdenite, metal ions, flotation, depression, adsorption

CLC Number:

TD913

YUAN Zhi-tao， ZHANG Qi-dong， LIU Jiong-tian. Influence and Mechanism of Metal Ions on Flotation of Molybdenite[J]. Journal of Northeastern University Natural Science, 2016, 37(7): 1013-1016.

References

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Influence and Mechanism of Metal Ions on Flotation of Molybdenite

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