Crystallization device for magnesium chloride production

The utility model relates to the technical field of magnesium chloride production, and provides a crystallization device for magnesium chloride production, which comprises a crystallization tank and a gas importer for inputting gas into the crystallization tank, and the output end of the gas importer is connected with a hot air pipe and a cold air pipe; the refrigerating and heating box is used for heating the hot air pipe and refrigerating the cold air pipe, and a refrigerating and heating device is mounted in the refrigerating and heating box; the gas dispersing mechanism is used for uniformly dispersing gas into the crystallizing tank and comprises a rotating pipe assembly, and the rotating pipe assembly is communicated with the hot air pipe and the cold air pipe through a rotating connecting assembly. Through the arrangement of the hot air pipe, the cold air pipe and the refrigerating and heating box, during crystallization operation, hot air is firstly guided into the crystallizing tank to evaporate wate