Method for controlling crystallization process of dissolved substances in liquid solution, involves determining changes in propagation velocity, size and suspension density of dissolved particles based on change in process parameters

摘要

The method involves deriving the process parameters from crystallization process measurement values related to the attenuation and propagation velocity of ultrasonic waves into the liquid solution containing dissolved crystal particles. The average size of crystal particles in liquid solution is determined by the change of process parameters and the measurement values. The changes in propagation velocity and attenuation values of size and suspension density of dissolved particles in liquid solution are determined, based on the change in process parameters.