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Abstract:Atpresent,producingLanthanumcarbonateneedstoadopttheworkingprocedureofextractingRareEarthwithP507hydrochloricacidtoseparateimpurities.Inordertoreduceproductioncostandbepropitioustosaveenergyandreduceemission,weadoptchemistrymethodtoeliminateimpurities.Westudiedtheeffectofreactiontemperature,theconcentrationoftheRareEarth,theflowingrateofAmmoniumcarbonate,PHValueofend-pointsetcontheimpuritiesofLanthanumcarbonateproducts.Firstly,thecontentsofSO42-andaredividedfromLanthanumchlorideliquid.Secondly,CL-,Ca2+andotherionsareeliminatedduringAmmoniumbicarbonatedepositionprocedure.Lastly,weobtainLanthanumcarbonateproductswhichqualityareasgoodastheoneinthetransferringwithP507hydrochloricacidtechniques.