The driving force of the melt crystallization process is the supersaturation or undercooling of a component in the molten liquid, the process is divided into three stages: crystallization, sweating and melting.
Crystallization:
Crystallization is the process in which, as the temperature of the molten liquid is gradually decreased, a component in the melt becomes supersaturated and begins to nucleate and grow into crystals.
Sweating:
During the growing process of crystal, impurities of mother liquor will inevitably be trapped in the coarse crystal, so the coarse crystal needs to undergo the sweating process for purification.
Melting:
The purified crystals are melted completely by heating.
