Rotating Drum Compound Fertilizer Granulator
The production of compound fertilizer by drum granulator is a hot granulation process. By increasing the material temperature and the solubility of salt in the granulation water system, the liquid phase quantity meeting the requirements of material granulation can be obtained at low moisture content. It can effectively reduce the heat consumption in the drying process and fully improve the production capacity of the equipment.
1. The time and frequency of material rolling in the granulator are the main factors that determine the spheroidization rate and the roundness of particles.
The principle of rotary drum compound fertilizer granulator is that the material depends on the surface tension, proper liquid phase and extrusion force generated by rolling between materials. The small particles are taken as the core of the material in the granulator. During the rolling process, the large particles are absorbed and adhered to form a balance. The higher the rolling frequency of LS is, the higher the spheroidization rate is and the rounder the particles are.
2. Stable material quantity and uniform liquid distribution are the key factors to produce qualified granules.
The design of drum granulated compound fertilizer is to bury the steam pipe in the bed and put the spray pipe on the bed. Under the condition of stable material supply, the saturated steam can provide part of moisture and humidified material while heating. Through the use of steam, the temperature and viscosity of the material are increased, and the moisture content of the material in the granulation process is reduced, thus reducing the drying load. The liquid phase distribution of steam added is more uniform than that of adding water. In the compound fertilizer production process, due to the unreasonable installation of steam nozzle and uneven distribution of material liquid phase, which affects the formation of particles. To solve this problem, we can increase the steam nozzle to increase the steam area of the materials.
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