首页|Advancing green flotation:Separation of Cu-Pb minerals through the application of eco-friendly organic double reaction group depressant

Advancing green flotation:Separation of Cu-Pb minerals through the application of eco-friendly organic double reaction group depressant

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Achieving efficient flotation separation of chalcopyrite and galena while maintaining environmental friendliness poses a challenge.This study utilized the environmentally friendly copolymer acrylic acid-2-acrylamide-2-methylpropanesulfonic acid (AA/AMPS) as a depressant to separate chalcopyrite and galena.Flotation tests revealed a significant reduction in galena recovery when AA/AMPS was employed,with minimal impact observed on chalcopyrite.In artificial mixed ore flotation,AA/AMPS was found to enhance the efficiency of copper and lead separation,surpassing K2Cr2O7.Furthermore,the effectiveness of AA/AMPS in facilitating copper-lead separation has been validated in practical ore flotation.The pres-ence of AA/AMPS inhibited the adsorption of SBX onto galena,as confirmed by zeta potential and contact angle measurements.However,the adsorption on chalcopyrite remained unaffected.Through analyses using Atomic Force Microscope,X-ray photoelectron spectroscopy,and Density Functional Theory,a robust chemical interaction between the reactive groups in AA/AMPS and Pb sites on galena was uncov-ered,resulting in the formation of a hydrophilic polymer layer.This layer impedes SBX adsorption and reduces galena's floatability.In contrast,no significant chemical adsorption was observed between AA/AMPS and Cu and Fe sites on chalcopyrite,preserving its SBX affinity.Overall,AA/AMPS shows promise in replacing traditional depressants for Cu-Pb sulfide ore separation,enhancing environmental sustainability.

AA/AMPSDouble reactive groupActual oreSelective depressantGalena

Siqi Yang、Xianping Luo、Rufeng Chen、Louyan Shen、Xun Fan、Jiancheng Miao、Xuekun Tang

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Jiangxi Provincial Key Laboratory of Low-Carbon Processing and Utilization of Strategic Metal Mineral Resources,Jiangxi University of Science and Technology,Ganzhou 341000,China

Faculty of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China

Key Laboratory of Efficient Exploitation and Utilization of Rare Metal Resources of Jiangxi Province,Jiangxi University of Science and Technology,Ganzhou 341000,China

Nanjing Yinmao Lead-Zinc Mining Co.,Ltd.,Nanjing 210046,China

China Nerin Engineering Co.,Ltd.,Nanchang 330031,China

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2024

矿业科学技术学报(英文版)
中国矿业大学

矿业科学技术学报(英文版)

CSTPCDEI
影响因子:1.222
ISSN:2095-2686
年,卷(期):2024.34(11)