Composed of four composite wall panels and an outer frame with wide and narrow faces. Mainly used for slab continuous casting, large cross-section square billet continuous casting, and special shaped billet continuous casting. Each composite wall panel of the combined crystallizer is composed of an inner copper plate connected by bolts (with a cooling water channel milled on the outer surface) and an outer steel water tank. A cooling water gap is formed between the inner copper plate and the outer wall for water cooling. Use a clamping mechanism to compress the four composite walls. In order to achieve online width adjustment of the crystallizer and form the required inverted taper, four sets of adjustment devices are installed on the upper and lower parts of the narrow wall panel of the crystallizer. When the assembled crystallizer and outer frame are placed on the vibration table, all inlet and outlet pipes are automatically connected. In order to better protect the lower mouth of the crystallizer and prevent premature and rapid wear, foot rollers or protective grids are installed next to the lower mouth of the crystallizer. The foot roller or protective grating vibrates together with the crystallizer. The crystallizer is directly aligned with the first section of the secondary cooling system (straight or fan-shaped) through a vibrating frame, facilitating accurate positioning of the crystallizer and the first section of the secondary cooling system. The two form a whole and can be quickly lifted.

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.