包钢稀土高盐废水零排放处理取得成果

包钢稀土高盐废水零排放处理取得成果稀土第34卷ＲesearchonCrystalStructureandCharacteristicofLanthanumOxide－ceriumOxideSystemJIANGYin-ju1，2，ANWen-hu1，2(1.InnerMongoliaKeyLaboratoryofIntegratedExploitationofBayanOboMulti－MetalＲesources，Baotou014010，China;2.SchoolofMaterialandMetallurgy，InnerMongoliaUniversityofScienceandTechnology，Baotou014010，China)Abstract:La2O3－CeO2withdifferentmolarratioofLatoCewerepreparedbythecoprecipitationmethod.ThecrystalstructuresofthesesampleswereanalyzedbyXＲD.ThecompositionrangeofLa2O3－Ce2O3thatexistedsteadilywasdeter-minedbythehydrogenreductionexperimentofLa2O3－CeO2.ThecharacteristicsofLa2O3－CeO2convertingintohydroxidebythehydrothermalmethodwasstudied.Theresultsshowedthat，whenmolarratioofLatoCerangedfrom0.85to0.05，La2O3－CeO2existedwithface－centredcubicstructure;whenthemolarratiowas0.90or0.95，La2O3－CeO2existedwithanewstructure;andwhenthemolarratiowasmorethan0.7，La2O3－Ce2O3couldexiststeadily.La2O3－Ce2O3couldbeconvertedintoLa(OH)3－Ce(OH)3bythehydrothermalmethod.Whenthemolarratiowas0.7