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

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

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Froth flotation is an essential processing technique for upgrading low-grade ores.Flotation 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 sur-faces and hinder them from floating into the flotation concentration zone.Pyrite is the most common and challenging sulfide gangue,and its conventional depressants could be highly harmful to nature and humans.Therefore,using available,affordable,eco-friendly polymers to assist or replace hazardous reagents is mandatory for a green transition.Polysaccharide-based(starch,dextrin,carboxymethyl cellu-lose,guar gum,etc.)polymers are one of the most used biodegradable depressant groups for pyrite depres-sion.Despite 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 performance.As a unique approach,this review comprehensively discussed previously conducted studies on pyrite depression with polysaccharide-based reagents.Additionally,practical suggestions have been provided for future assessments and developments of polysaccharide-based depressants,which pave the way to green flotation.This 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.

Green flotationPyrite depressionEco-friendly depressantsAdsorption mechanisms

A.Asimi Neisiani、R.Saneie、A.Mohammadzadeh、D.G.Wonyen、S.Chehreh Chelgani

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Department of Mining and Metallurgical Engineering,Yazd University,Yazd 89195-741,Iran

Department of Materials Engineering,The University of British Columbia,Vancouver,BC V6T 1Z4,Canada

Laboratory for Strategic Materials,Department of Chemical Engineering and Applied Chemistry,University of Toronto,Toronto M5S 3E5,Canada

Department of Material Science and Engineering(Mining and Mineral Processing Engineering),African University of Science and Technology,Abuja P.M.B 681,Nigeria

Minerals and Metallurgical Engineering,Swedish School of Mines,Dept.of Civil,Environmental and Natural Resources Engineering,Luleå University of Technology,Luleå SE-97187,Sweden

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CAMM3Center of Advanced Mining and Metallurgya center of excellence at the Lule? University of Technology

2023

10.1016/j.ijmst.2023.09.002

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)

CSTPCDCSCDEI
影响因子：1.222
ISSN：2095-2686
年,卷(期)：2023.33(10)
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