Granulation process is not required to be finished on land, it can also be carried out underwater. For an underwater granulator, a steady stream of water flows over the surface of die plate, and the molten polymer is extruded from the die. In the drier, water is transferred into storage tank, cooled and reused, and the granules are processed with centrifugal drier to remove water.

Organic fertilizer granulator is especially designed for the granulation of many organics after they are fermented, and it is very innovative when compared with conventional granulation process of organic fertilizer. There is no need to dry or crush the materials before granulation, and particles in ball shape are produced after the materials are properly mixed. So, the energy is saved to a large extent.

Usually, the screw of single screw granulator is divided into three sections, feed zone, compression zone and metering zone. The feed zone has a small root diameter, and its major function is to convey the materials to the next zone. So, feeding capacity is an important factor, and the parameters are L1 as well as h1. In addition, h1=(0.12-0.14)D.

1. Filling, blending, modification, adding and chlorination of rubber and engineering resin
2. Processing of polypropylene and super absorbent resin
3. Extrusion of degradable masterbatch, polycondensation of polyamide, addition polymerization of polyurethane.

PVC single screw plastic granulator consists of extruder, cutting machine and cooling tank (or air cooling device). This unit is complete, and it can finish the granulation process automatically and continually. The obtained granules are clean, and pollution and aging problem are avoided. This machine improves production efficiency, and greatly cuts down the production cost.

Mineral granulator has three discharge ports which facilitate intermittent production, and the work efficiency is improved while the labor intensity is greatly cut down. Soft belt transmission is adopted for the granulator and motor, it ensures stable starting and relieves the impact force, so the equipment life is prolonged.