Adsorption mechanism of acyl thionocarbamate on chalcopyrite and pyrite

被引：1

作者：

Huang X.-P. ^{[1
]}

Yang H.-F. ^{[1
]}

Cao X.-Y. ^{[1
]}

Jin K. ^{[1
]}

Zeng J.-X. ^{[1
]}

Zhang R. ^{[1
]}

Zhou H. ^{[1
]}

机构：

[1] School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2023年 / 33卷 / 06期

关键词：

acyl thionocarbamate; adsorption mechanism; chalcopyrite; flotation separation; pyrite;

D O I：

10.11817/j.ysxb.1004.0609.2022-43258

中图分类号：

学科分类号：

摘要：

The development of surfactants with high selectivity and strong collecting abilitiesis is of great significance for the efficient enrichment of copper sulfide minerals. Herein, we prepared a multifunctional surfactant of O-ethyl-N-benzoyl thionocarbamate (EBZTC), acting as a collector for the separation of chalcopyrite from pyrite. The flotation experimental results indicate that EBZTC is a preferable collector for separating of chalcopyrite from pyrite in comparison with IPETC. DFT calculation reveals that the introduction of acyl into the thionocarbamate molecule can improve its chelating ability and flotation selectivity for the separation of chalcopyrite and pyrite. UV spectroscopy, zeta potential and XPS analyses confirm that EBZTC is chemisorbed on the chalcopyrite surface through the chemical reactions of C= O and C= S groups to the copper species with the formation of C—O—Cu and C—S—Cu, without obvious adsorption of EBZTC on pyrite surface is observed. © 2023 Central South University of Technology. All rights reserved.

引用

页码：2004 / 2014

页数：10

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