Effect and Mechanism of Depressant Disodium Carboxymethyl Trithiocarbonate on Flotation Separation of Stibnite and Pyrite

被引:0
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作者
Zhengyao Li
Yuanyuan Wang
Muxin Jia
Ligang Wen
Xuewen Wang
Jinzhi Wei
机构
[1] University of Science and Technology,School of Civil and Resource Engineering
[2] State Key Laboratory of Process Automation in Mining & Metallurgy,undefined
[3] Beijing Key Laboratory of Process Automation in Mining & Metallurgy,undefined
来源
关键词
Stibnite; Pyrite; Flotation; Disodium carboxymethyl trithiocarbonate; Adsorption;
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学科分类号
摘要
Disodium carboxymethyl trithiocarbonate (D8) is an effective depressant for the flotation separation of stibnite and pyrite, but its inhibitory mechanism is still unclear. Hence, in this study, the flotation separation performance and inhibition mechanism of D8 were investigated through micro-flotation experiment, contact angle, infrared spectroscopy, adsorption capacity, and zeta potential measurement. The flotation experiment results showed that the D8 had a strong inhibitory ability on pyrite, while its inhibitory ability on stibnite was weak. Infrared and adsorption capacity experiment results indicated that D8 adsorbed onto the surface of pyrite and stibnite through physical adsorption; D8 and sodium diethyldithiocarbamate competitively adsorbed onto the surface of pyrite, which reduced the adsorption amount of sodium diethyldithiocarbamate. The measurement results of contact angle and zeta potential showed that the contact angle and zeta potential of pyrite were significantly reduced with the D8 adsorption, while after D8 acted on the surface of stibnite, the contact angle barely changed. Therefore, D8 enhanced the hydrophilicity of the pyrite surface and the pyrite was effectively depressed.
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页码:1267 / 1275
页数:8
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