Temperature Dependence of the Crystal Growth Rate of Potassium Sulfate at Low Temperature

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Yoji Taguchi¹  Mika Yoshida¹  Hiroyuki Kobayashi¹ 

[1] Department of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University

关键词: Crystal Growth Rate;    Potassium Sulfate;    Temperature Dependence;    Minimum Growth Rate;    Existence of Fine Crystals;   

DOI  :  10.1252/jcej.35.1038

来源: Maruzen Company Ltd

【 摘 要 】

References(12)Cited-By(1)The crystal growth rates of potassium sulfate were measured in a relatively low temperature range from 0 to 35°C. The temperature dependence of the growth rate was examined because of the lack of rate data at low temperatures. A minimum growth rate was found at nearly 20°C. The reason why the growth rate increased at a low temperature of less than 20°C is that ‘fine crystals’ might already exist in a supersaturated solution of potassium sulfate before crystallization and that deposition of these fine crystals on the seed crystal surface may enhance the crystal growth rate. The existence of the fine crystals in supersaturated solution was confirmed by measuring the density and electric conductivity of the mother liquor of potassium sulfate.

【 授权许可】

Unknown