The principle of rotary drum granulator is that the material relies on the surface tension, the right amount of liquid phase, the extrusion force generated by the rolling between the materials, and the material takes small particles as the core in the correct direction of movement in the granulator, and sucks big during the rolling. Small attached, glued into a ball. The higher the rolling frequency in a certain period of time, the higher the spheroidization rate, and the more rounded the pellets are after they are formed.
1. In the npk production line, we have encountered two situations due to the different friction between the material and the wall of the granulator. The inner surface of the granulator has a large surface finish, which reduces the friction between the material and the cylinder wall, and weakens the upward movement of the material. If the material does not roll, particles cannot be produced. In response to this situation, we can solve it by adjusting the speed of the granulator and installing a small copy board inside.
2. The material in the rotary drum granulator is seriously sticking to the wall, and the friction between the material in the granulator and the cylinder wall is enhanced, and the material in the granulator is lifted too high, causing the material to be thrown down from the top, so that the formed particles are not round. And too many large particles, we think there are two reasons for this situation: on the one hand, it is caused by too many viscous materials. The inside of the machine is not smooth, which is solved by changing the internal material and increasing the smoothness of the granulator.