Investigation of Cooling Crystallization Parameters on the Morphologic Properties of Ammonium Perchlorate Crystals by Taguchi Method

Document Type : Research Article


Department of Chemistry, Malek Ashtar University of Technology, P.O.Box 16765-3454 Tehran, I.R. IRAN


This research is aimed to investigate the effect of crystallization parameters like cooling rate, seeding ratio, a cooling trend, and agitation intensity on the morphological properties of ammonium perchlorate crystals. A solution of AP was prepared by solving industrial grade ammonium perchlorate into the pure water and recrystallization was conducted using a 1.3 L agitated batch crystallizer. The effects of the selected parameters were analyzed by applying Taguchi’s method. Resulted crystals were characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The results indicate that the cooling rate has the greatest contribution to the roundness of the crystals and by optimization of the parameters, roundness and its standard deviation have been improved by 9.4% and 79% respectively. Compared to the industrial crystals, the crystallinity of the resulted crystals was also substantially enhanced.


Main Subjects

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