Recovery of iron from iron tailings by suspension magnetization roasting with biomass-derived pyrolytic gas
Waste Management(2022)
Abstract
•Biomass pyrolysis gas can reduce hematite to magnetite.•The phase transformation process of iron is FeOOH → Fe2O3 → Fe3O4 → FeO.•Reduction and dehydration result in pore formation in the mineral.•The pyrolysis gas can react again during suspension roasting.
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Key words
SMR technology,Fast pyrolysis,Gases analyses,Phase transformation,Magnetic performance
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