Ultrasonic Study on Conglomeration of Cerium Oxalate Particles Produced by Reaction Crystallization in Series Reactor Including T-mixer and Stirred Tank

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Jung-Kyu Hyun¹  Ho-Sung Yoon²  Jin-Young Lee²  Sung-Don Kim²  Woo-Sik Kim¹  Joon-Soo Kim² 

[1] Department of Chemical Engineering, Kyunghee University;Division of Mineral Materials Processing, KIGAM

关键词: T-mixer;    Ultrasonication;    Reaction Crystallization;    Aggregation;    Agglomeration;    Cerium Oxalate;   

DOI  :  10.1252/jcej.35.1211

来源: Maruzen Company Ltd

【 摘 要 】

References(20)Cited-By(5)The conglomeration of cerium oxalate crystals was investigated using ultrasound in a T-mixer and mixing tank reactor system. The mean particle size was enlarged when increasing the feeding time, yet insensitive to the length of the T-mixer. The use of ultrasound on the conglomerates revealed that they consisted of both aggregated and agglomerated particles. The aggregated particles were dispersed into individual particles with an ultrasonic intensity above 6 watts. However, the agglomerated particles resisted the vibrational force of the ultrasound up to 30 watts. Also, about 20 min of ultrasonic treatment was found to be sufficient to disperse the aggregated particles. The aggregation fraction in the conglomerates was estimated based on comparing the mean particle sizes obtained from the product suspensions with and without ultrasound treatment. By modifying the holding time in the stirred reactor and the conversion conditions in the T-mixer, the aggregation fraction was also found to depend on both the feeding time and the length of the T-mixer.

【 授权许可】

Unknown