A slurry circulating continuous crystallizer (Figure 1). During operation, the material liquid is added from the lower part of the circulation tube, mixed with the crystal slurry leaving the bottom of the crystallization chamber, and then pumped to the heating chamber. The crystal slurry heats up in the heating chamber (usually 2-6 ℃), but does not evaporate. After the hot crystal slurry enters the crystallization chamber, it boils, causing the solution to reach a supersaturated state. As a result, some solutes deposit on the surface of suspended grains, causing the crystals to grow. As a product, the crystal slurry is discharged from the upper part of the circulation pipe. The forced circulation evaporation crystallizer has a large production capacity, but the particle size distribution of the product is relatively wide.

A crystallizer is a continuous steel casting equipment that receives molten steel injected from the intermediate tank and solidifies it into a solid shell according to the specified cross-sectional shape. It is the most critical component of the continuous casting machine, and its structure, material, and performance parameters play a decisive role in the quality of the casting billet and the production capacity of the casting machine.