A novel eco-friendly depressant Scutellaria Baicalensis Extract SBE and its performance on flotation separation of chalcopyrite from sphalerite: A combined experimental and mechanism investigation

IF 2 3区化学 Q4 CHEMISTRY, PHYSICAL Chemical Physics Pub Date : 2024-11-28 DOI:10.1016/j.chemphys.2024.112541

Juan Yu , Xiaolin Zhang , Xinxin Liu , Xinglong Xu , Xingyu Chen , Haiyang He , Yue Zhang , Rong Peng , Peilun Shen , Dianwen Liu

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Abstract

This research investigates the utilization of Scutellaria Baicalensis Extract (SBE) as a depressant in the flotation separation of sphalerite and chalcopyrite with Potassium Amylxanthate (PAX) serving as the flotation collector. The feasibility of SBE as a sphalerite depressant at near neutral pH conditions was evaluated through flotation tests, and its depression mechanism was explored using contact angle measurements, zeta potential measurements, adsorption measurements and XPS analyses. Micro-flotation experiments demonstrated the efficacy of SBE as a sphalerite depressant. In artificial mixed mineral experiments, a Cu concentrate with a recovery of 92.55 % and a grade of 28.45 % Cu, and a Zn concentrate with a recovery of 94.43 % and a grade of 57.30 % Zn were obtained at an SBE concentration of 37.5 mg/L. Contact angle, zeta potential and adsorption measurements revealed that SBE was adsorbed onto both sphalerite and chalcopyrite surface, with stronger adsorption on sphalerite. The amount of SBE adsorption on sphalerite exceeded that on chalcopyrite, and SBE prevented the collector’s adsorption on sphalerite while minimally affecting chalcopyrite. XPS analysis results suggested that SBE likely acts through physical adsorption on the mineral surface.

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来源期刊

Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

4.60

自引率

4.30%

发文量

278

审稿时长

39 days

期刊介绍： Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.