In the fertilizer production process, coolers play a crucial role, especially in fertilizer pelletizer and organic fertilizer production lines. Its working mode has an important impact on ensuring fertilizer quality and subsequent treatment.
The main working mode of the cooling machine is countercurrent cooling. In the organic fertilizer production line, the temperature of the fertilizer particles after processing by the fertilizer granulator is higher, and the fertilizer particles enter from the upper feed port of the cooler machine. Cold air enters through the lower air inlet of the cooler. The fertilizer particles move slowly from top to bottom under the action of gravity, forming a reverse flow with the cold air from bottom to bottom. This countercurrent method makes the cold and hot medium fully contact, and the heat exchange efficiency is high. The temperature of the fertilizer particles gradually decreases, while the cold air is heated and discharged through the upper outlet.
During the cooling process, the cooling machine continuously turns the fertilizer particles through the internal stirring device or vibration device. This step is crucial to ensure that the fertilizer particles are in uniform contact with the cold air, avoiding uneven local cooling. The intensity and frequency of agitation or vibration can be adjusted according to the characteristics of the fertilizer particles as well as the production needs. For example, for some organic fertilizer materials that are easy to caking, appropriately strengthening the mixing force can prevent the particles from sticking and ensure the cooling effect.
At the same time, the air volume and wind speed of the cooling machine are also important factors affecting the cooling effect. Reasonable air volume and wind speed can provide enough cold air for heat exchange with fertilizer particles, while not blowing away fertilizer particles too fast due to wind speed. Through the precise control system, the air volume and wind speed of the cooling machine can be adjusted according to the actual situation to achieve the best cooling effect.
In addition, the discharge temperature of the cooling machine is also controllable. According to different fertilizer types and production process requirements, the operating parameters of the cooling machine can be adjusted to make the fertilizer particles discharge after reaching the appropriate temperature. This function ensures that the fertilizer is at the right temperature when it enters the subsequent packaging or storage process, helping to maintain the quality and performance of the fertilizer.
In short, the cooling machine provides a strong guarantee for the efficient operation of fertilizer pelletizer and organic fertilizer production line through countercurrent cooling, uniform turning, air volume and wind speed control and discharge temperature adjustment in fertilizer production.
