화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.52, 359-368, August, 2017
DOI10.1016/j.jiec.2017.04.015  Export Citation
The role of HABTC’s hydroxamate and dithiocarbamate groups in chalcopyrite flotation
Sheng Liu, Guangyi Liu†, Hong Zhong†, and Xianglin Yang
  • College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
E-mail:,
In this paper, S-[(2-hydroxyamino)-2-oxoethyl]-N,N-dibutyl-dithiocarbamate (HABTC) was first synthesized and characterized by 1H NMR, 13C NMR and FTIR. The role of HABTC’s hydroxamate and dithiocarbamate groups in chalcopyrite flotation was evaluated by micro-flotation, bench-scale flotation, adsorption experiments, zeta potential and X-ray photoelectron spectroscopy (XPS). HABTC exhibited excellent affinity to chalcopyrite particles under pH 6-10 and achieved superior flotation recovery of copper minerals in comparison with sodium isobutyl xanthate (SIBX). The adsorption thermodynamics and kinetics elucidated that HABTC adsorption on to chalcopyrite surfaces was a spontaneously endothermic chemisorption process. Zeta potential demonstrated that HABTC might chemisorb on to the positive sites of chalcopyrite surfaces. XPS spectra further revealed that both dithiocarbamate and hydroxamate groups of HABTC anchored on chalcopyrite surfaces through Cu(II) hydroxamate and Cu(I)- dithiocarbamate configurations, resulting in an enhanced collecting power of HABTC to chalcopyrite particles.
Keywords:S-[(2-hydroxyamino)-2-oxoethyl]-N,Ndibutyldithiocarbamate;Chalcopyrite;Adsorption;Hydroxamate and dithiocarbamate groups;Flotation
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