1. The DUBLE rectification reselection device fully reselects coarse coal slurry, obtaining fine-grained clean coal with a  lower ash content. It can also separate into 2 or 3 products based on coal quality, meeting different customer product structure requirements.

2. The coal spiral is equipped with a patented pre-discharge scale device, which can greatly improve the sorting accuracy of the screw separator and the adjustable row and flexibility of the screw separator.

3. The machine adopts modular design, easy to assemble and disassemble. It can be modified based on customer requirements.

4. The slurry distributor adopts the feeding mode of parallel throat breathing tube and the reverse siphon ensures the stability of slurry flow and flow rate, which effectively improves the sorting effect of the spiral separator.

5. The new spiral separator adopts an advanced multi-parabolic trough design to maximize product recovery rate.

6. All overcurrent components are coated with wear-resistant polyurethane or polyurea casting spray, ensuring high strength, wear resistance, and significantly increasing the lifespan of the spiral separator.

7. The edge of the spiral separation trough adopts an innovative structural design to effectively prevent slurry splashing and reducing maintenance costs.