Effect of Fine Talc on Sulfurized Flotation of Malachite

doi:10.12068/j.issn.1005-3026.2022.05.015

Abstract

Abstract: It is found that the addition of fine-grained talc reduces the floatability of malachite on sulfurized flotation by flotation test， and the higher the content of fine-grained talc， the greater the influence on the floatability of malachite.Zeta potential measurements， adsorption tests， SEM-EDS test and EDLVO theory calculation illustrated the reason for the influence of fine-grained talc on sulfurized flotation of malachite. The results show that the adsorption of appropriate amount of Na₂S on the surface of malachite is the key to the success of sulfidization-xanthate flotation. The fine-grained talc adsorbs on the surface of malachite， and the adsorption of Na₂S doesn’t occur on the surface of talc. Therefore， the fine-grained talc weakens the effect of sulfidization on the surface of malachite and reduces the floatability of malachite.

Key words: malachite; talc; flotation; adsorption cover; EDLVO theory

CLC Number:

TD923

LIU Yu-tong， YIN Wan-zhong， SHENG Qiu-yue， YAO Jin. Effect of Fine Talc on Sulfurized Flotation of Malachite[J]. Journal of Northeastern University(Natural Science), 2022, 43(5): 709-717.

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