期刊
POWDER TECHNOLOGY
卷 224, 期 -, 页码 351-355出版社
ELSEVIER
DOI: 10.1016/j.powtec.2012.03.018
关键词
Bayer process; Aluminum hydroxide; Agglomeration
The effects of temperature, seed mass and agitation rate on agglomeration kinetics of aluminum hydroxide in Bayer process have been studied in a batch system. Collected raw data were analyzed and the kinetics data of agglomeration were derived through simulation of the process using a pre-developed software. The results showed that agglomeration kinetics constant (agglomeration kernel) increases with increase in temperature and agitation rate. Moreover a maximum value of agglomeration rate versus added seed mass was observed. Furthermore the magnitude of calculated activation energy of agglomeration was close to that of growth. (C) 2012 Elsevier B.V. All rights reserved.
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