METHOD FOR CONTROLLING A CRYSTALLISATION PROCESS

摘要

The present invention pertains to the field of applied physics and chemistry and may be used for controlling the crystallisation process of various materials from solutions or melts. The purpose of this invention is to increase the universal characteristics of the crystallisation process control. This invention essentially relates to a method that involves applying an action in a portion of the crystal formation using a wide-band electromagnetic radiation within a frequency range of 30 kHz to 100 MHz. The values of the lower and upper limits of the frequency band of the electromagnetic radiation, that correspond to the spectrum of cluster absorption in the liquid phase of the solution or the melt, are set by calculations using given formulae. This method improves the quality of the target product concerning homogeneity (size and composition of the crystals) and plasticity (1.5 to 6 times higher), while using a source of electromagnetic radiation having insignificant power requirements (from 0.1 to 5.0 watts/m<3>).