废稀土荧光粉稀土回收技术的研究进展

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中图分类号：TF845 文献标志码：A 文章编号：1004-4345（2025）04-0028-06

Research Progresson Rare EarthRecovery fromWaste Rare EarthPhosphors

ZHANG Xiaoming， SHAO Longbin （China Nerin Engineering Co.，Ltd.，Nanchang， Jiangxi 33OO38， China）

AbstractThis paperreviews thecurrntstatusofrareearthrecovery technologiesfrom wasterareearthphosphors，systematicaly comparingthedvantagesanddisadantagesofdirectrecoverprocesses（suchasflotation，windseparation，centrifugalepation magneticseparation，andmechanicalactivation）andindirectrecoveryproceses（suchasacidleachingandalkalifusionethods）. Studiesindicatethat：thepowdersobtainedfromdirectrecoveryproceses havelowpurityandcanhardlymeetproduction requirements；indirectrecoveryprocessscansignificantlyincreasethetotalrareearthrecoveryate.Amongthem，alkalifusion pretreatment process greatly enhances the leaching rates of cerium（Ce） and terbium （Tb） to over 90 % by destroying the stable aluminatestructureofgreenandbluephosphors，butitalsopresentsisuessuchastheoxidationofvariablevalenceelementsandthe introductionofimpuriesfromironpowder.Basedontechnicalanalysis，thedevelopmenttrendsfortheresourceutiliztonofwaste rare earth phosphors are prospected， providing a reference for green and efficient recovery.

Keywordswaste rare earth phosphors;rare earth elements;recovery

稀土元素因其独特的物理化学性质，被广泛应用于冶金、军事、石油化工和新材料等领域，享有“新材料之母"“工业维生素"的美誉[-5，是当今世界极为重要的战略资源之一。（剩余10772字）