A novel method to achieve the flotation of pyrite from lizardite slime without collector or depressant
A novel method to achieve the flotation of pyrite from lizardite slime without collector or depressant
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一种无需捕收剂和抑制剂从蜥蜴矿泥中浮选黄铁矿的新方法
DOI:
10.1016/j.mineng.2020.106580
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发表时间:
2020-10
影响因子:
4.8
通讯作者:
Hong Yu
中科院分区:
文献类型:
--
作者:
Siyuan Yang;Yanling Xu;Cheng Liu;Guanghua Ai;Lingyun Huang;Hong Yu
A combination of sodium sulfide (Na2S) and pH adjustment was introduced in this study to achieve the efficient flotation of pyrite from lizardite slime. Microflotation results showed that the addition of lizardite slime could depress the floatability of the pyrite but it did not interfere with the pyrite flotation under high alkalinity condition in the presence of Na2S. Zeta potential measurements revealed that the surface charges of lizardite and pyrite were both negative when pH > 10, causing the detachment of lizardite slime from pyrite surface due to the electrostatic repulsion. Then Na2S could selectively adsorb onto the exposed pyrite surface in the form of HS−and oxidized to the hydrophobic S0through the electrochemical interaction, leading to the improvement of pyrite floatability.
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