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
收藏
页码:2004 / 2014
页数:10
相关论文
共 30 条
  • [11] MA Xin, WANG Shuai, ZHONG Hong, Sodium benzyl trithiocarbonate synthesis and flotation performance to chalcopyrite, The Chinese Journal of Nonferrous Metals, 28, 5, (2018)
  • [12] FAIRTHORNE G, FORNASIERO G, RALSTON J., Interaction of thionocarbamate and thiourea collectors with sulphide minerals: A flotation and adsorption study[J], International Journal of Mineral Processing, 50, 4, (1997)
  • [13] ZHAO Shun-zheng, WEN Ya-feng, DU Cheng-cheng, Et al., Introduction of vacancy capture mechanism into defective alumina microspheres for enhanced adsorption of organic dyes, Chemical Engineering Journal, 402, (2020)
  • [14] GUPTA U, UPPAL A, KANT R, Et al., A combined experimental and computational studies of 3, 3, 6, 6-Tetramethyl-9- (4-Methoxyphenyl) 3, 4, 6, 7, 9, 10 hexahydroacridine-1, 8-dione[J], Molecular Physics, 117, 5, (2019)
  • [15] PATIL M K, KOTRESH M G, INAMDAR S R., A combined solvatochromic shift and TDDFT study probing solute-solvent interactions of blue fluorescent Alexa Fluor 350 dye: Evaluation of ground and excited state dipole moments, Spectrochimica Acta Part A (Molecular and Biomolecular Spectroscopy), 215, (2019)
  • [16] SUN Wei, YANG Fan, HU Yue-hua, Et al., Application of frontier orbital in developing new collectors of chalcopyrite, The Chinese Journal of Nonferrous Metals, 19, 8, (2009)
  • [17] MAKHLOUF M M, RADWAN A S, GHAZAL B., Experimental and DFT insights into molecular structure and optical properties of new chalcones as promising photosensitizers towards solar cell applications, Applied Surface Science, 452, (2018)
  • [18] PEARSON R G., Hard and soft acids and bases, Journal of the American Chemical Society, 85, 22, pp. 3533-3539, (1963)
  • [19] XIE De-long, ZHANG Xin-ya, MORBIDELLI M, Et al., Competitive adsorption of xanthates with different chain lengths on chalcopyrite particles[J], Industrial & Engineering Chemistry Research, 55, 5, (2016)
  • [20] GAO De-qing, SCHOLZ F, NOTHOFER H G, Et al., Fabrication of asymmetric molecular junctions by the oriented assembly of dithiocarbamate rectifiers[J], Journal of the American Chemical Society, 133, 15, (2011)