（1）Operation principle:
The dry powder material is filled into the equipment through the top, deaerating, helix press enters into double roller. Under the extreme compression force action of double rollers, the material has plastic deformation and compressed into slice. The slice material through breaking, graining, sieving process, get the grain product. The degree of compression force can be adjusted by the pressure of hydraulic oil cylinder according to the request of granulation operation. The different pressure setting can get the finished grain with different strength.
（2） Characteristics
1、The material is compressed into shaped through mechanical pressure, without adding any wetting agent. The product purity is guaranteed.
2、The process flow is short and lower in power consumption, few accessory equipment and worker.
3、The dry powder can be grained directly. No need the next drying process.
4、Higher grain strength. Bulk specific gravity improvement is more obvious than other granulation methods.
5、More flexibility in operation. Wide application. The size of particle strength can be adjusted through hydraulic pressure.
6、The system closed loop operation, realizes the continuous production.
