Pelletizing Die Plate in the underwater pelletizing, pelletizing die plate in the cooling water, while the pelletizing die plate of the internal heating channel heating medium constantly heating the material to promote the flow of materials and facilitate extrusion.The outside of the moldboard is required to cool the material for pelletizing die plate.Therefore, the pelletizing die plate is pelletized directly under the cooling water, and the temperature difference between the inside and outside of the pelletizing die plate is very large, thus generating heat exchange and leading to heat loss.
In order to minimize this heat loss, extend the service life of the formwork and save energy, heat insulation is usually carried out by installing an air cavity under the wear-resistant layer.Insulation is usually carried out by installing an air cavity under the wear layer.Improve the heating effect of the heating medium on the material, plus burn heat loss.However, this method has the disadvantage of weakening the strength of the granulation band due to the presence of vacuum cavities and does not prevent heat radiation.
In order to solve the loss of heat during underwater pelletizing of pelletizing , to extend the service life of the pelletizing die plate, and to save energy, a pelletizing die plate with heat-insulating material has been developed.
The pelletizing die plate overcomes the disadvantage of affecting the strength of the granulation belt due to the presence of air cavities, reduces the heat loss of the heating medium in the pelletizing die plate, and does not affect the cooling water to cool and granulate the material, which in turn improves the quality of the product.