Development of a Novel Supersaturation Monitoring System in Continuous Crystallization of KAl(SO4)2•12H2O

Article Crystallography

Continuous Crystallization of Phosphoric Acid Using Suspension Crystallizer: Effect of Operating Conditions on Purity of Crystals

Ippei Tsushima et al.

Summary: This study performed batch crystallization and continuous crystallization of phosphoric acid hemihydrate, showing differences in crystal shape and impurity concentration under different processes. By utilizing the equipment and approach elaborated in this study, the correlation between operating conditions and crystal quality can be assessed.

CRYSTAL RESEARCH AND TECHNOLOGY (2022)

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Article Engineering, Chemical

Industrial Crystallization of Potassium Sulfate Using a Suspension Crystallizer: Inclusion of Mother Liquor and an Impurity Distribution Model

Ippei Tsushima et al.

Summary: This study investigated the inclusion of mother liquor in crystals at different sizes through continuous crystallization of potassium sulfate. The results showed that small and large crystals contained a significant amount of mother liquor, while the average-sized crystals (400-500 μm) had an inclusion ratio of less than 1%. Additionally, an impurity distribution model for suspension crystals was proposed based on coreaggregation and shell-growth processes.

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN (2022)

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Article Engineering, Chemical