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过程工程学报 2004
EffectofUltrasoundFrequencyonthePrecipitationProcessofSupersaturatedSodiumAluminateSolutionKeywords: ultrasound,sodiumaluminatesolution,particlesizedistribution,nucleation Abstract: Theeffectsoffrequencyofultrasoundontheprecipitationprocessofpreparedsupersaturatedsodiumaluminatesolutionsofpracticalconcentrationwerestudiedexperimentallyunderseeded,isothermal,batchcrystallizationconditionsatvarioustemperaturesandinitialak(moleratioofNa2O/Al2O3).Thedecompositionandtheparticlenumberpercentageforsizebelow2mmattimeof15hwerecompared,particlesizedistributionandSEMphotosoftheproductaluminumhydroxidewerealsoanalyzed.Theresultsindicatethattheultrasonictreatmentat16kHzcanenhancethedecompositionrateofsodiumaluminatesolutions,andalsohaseffectsonparticlemorphologyandparticlesizedistributionofaluminumhydroxideprecipitated.
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