Study of Crystallization Kinetics of Picromerite in the K2SO4-MgSO4-H2O System
Songliang Ma, Yiqi Cui, Guangfeng Dong, Qingwang Liu
TL;DR
This study models how picromerite crystals form and grow, showing how temperature and stirring affect crystal size and quality.
Contribution
A new crystallization kinetics model for picromerite in the K2SO4-MgSO4-H2O system is developed.
Findings
Higher temperature increases supersaturation, enhancing nucleation and growth rates.
Increased stirring speed positively affects crystal nucleation and growth.
Lower supersaturation reduces the driving force for crystallization.
Abstract
The crystallization kinetics of picromerite play a crucial role in optimizing the fertilizer quality. This study developed a crystallization kinetics model of picromerite. Results show that increasing temperature mainly leads to higher supersaturation, which, in turn, enhances both nucleation and growth rates, with significant improvements in crystal size and uniformity. Higher stirring speed was found to have positive effects on crystal nucleation and growth rate. The decrease in supersaturation leads to the diminution of the driving force for crystallization and the gradual decline in crystallization. The study provides a comprehensive analysis of the relationships between these crystallization conditions and the resultant crystal properties.
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Taxonomy
TopicsMinerals Flotation and Separation Techniques · Calcium Carbonate Crystallization and Inhibition · Clay minerals and soil interactions