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Polysaccharides-based pyrite depressants for green flotation separation:An overview

International Journal of Mining Science and Technology 2023年第10期33卷 1229-1241页

作者： A.Asimi Neisiani R.Saneie A.Mohammadzadeh D.G.Wonyen S.Chehreh Chelgani Department of Mining and Metallurgical Engineering Yazd UniversityYazd 89195-741Iran Department of Materials Engineering The University of British ColumbiaVancouverBC V6T 1Z4Canada Laboratory for Strategic Materials Department of Chemical Engineering and Applied ChemistryUniversity of TorontoToronto M5S 3E5Canada Department of Material Science and Engineering(Mining and Mineral Processing Engineering) African University of Science and TechnologyAbuja P.M.B 681Nigeria Minerals and Metallurgical Engineering Swedish School of MinesDept.of CivilEnvironmental and Natural Resources EngineeringLuleå University of TechnologyLuleå SE-97187Sweden

Froth flotation is an essential processing technique for upgrading low-grade *** separation would not be efficient without chemical surfactants(collectors,depressants,frothers,etc.).depressants play a critical role in the selective separation of minerals in that they deactivate unfavorable mineral surfaces and hinder them from floating into the flotation concentration *** is the most common and challenging sulfide gangue,and its conventional depressants could be highly harmful to nature and ***,using available,affordable,eco-friendly polymers to assist or replace hazardous reagents is mandatory for a green ***-based(starch,dextrin,carboxymethyl cellulose,guar gum,etc.)polymers are one of the most used biodegradable depressant groups for pyrite *** the satisfactory flotation results obtained using these eco-friendly depressants,several gaps still need to be addressed,specifically in investigating surface interactions,adsorption mechanisms,and parameters affecting their depression *** a unique approach,this review comprehensively discussed previously conducted studies on pyrite depression with polysaccharide-based ***,practical suggestions have been provided for future assessments and developments of polysaccharide-based depressants,which pave the way to green *** robust review also explored the depression efficiency and various adsorption aspects of naturally derived depressants on the pyrite surface to create a possible universal trend for each biodegradable depressant derivative.

关键词： Green flotation Pyrite depression eco-friendly depressants Adsorption mechanisms

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