新型环保型抑制剂黄芩提取物SBE及其对黄铜矿与闪锌矿浮选分离效果的实验与机理研究

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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引用次数: 0

摘要

以黄芩提取物（SBE）为抑制剂，以淀粉黄药钾（PAX）为浮选捕收剂，对闪锌矿和黄铜矿进行了浮选分离研究。通过浮选试验评价了SBE在接近中性pH条件下作为闪锌矿抑制剂的可行性，并通过接触角测量、zeta电位测量、吸附测量和XPS分析探讨了SBE的抑制机理。微浮选实验证明了SBE作为闪锌矿抑制剂的有效性。在SBE浓度为37.5 mg/L的条件下，获得了铜回收率为92.55%、品位为28.45%的铜精矿和锌回收率为94.43%、品位为57.30%的锌精矿。接触角、zeta电位和吸附测定表明，SBE在闪锌矿和黄铜矿表面均有吸附，闪锌矿表面吸附力更强。SBE在闪锌矿上的吸附量超过了在黄铜矿上的吸附量，并且SBE阻止了捕收剂对闪锌矿的吸附，而对黄铜矿的影响最小。XPS分析结果表明，SBE可能通过物理吸附在矿物表面起作用。

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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

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.