The rotary drum granulator has unique technological secrets in the field of fertilizer processing. Understanding these secrets in depth can help us better understand its value in fertilizer production.
Pre treatment of raw materials is a fundamental and crucial step before fertilizer processing. Organic raw materials need to undergo sufficient fermentation and maturation to eliminate harmful substances and convert them into stable humus forms. Inorganic raw materials need to be accurately proportioned and crushed to ensure uniform distribution of various nutrients. At the same time, precise control of raw material humidity is indispensable, and appropriate humidity can provide good conditions for subsequent granulation.
The core component of the rotary drum granulator, the rotary drum, is the key place for forming fertilizer granules. When the drum begins to rotate, raw materials are continuously fed into it. The copying board inside the drum plays an important role, continuously lifting the raw materials and forming a complex and orderly motion trajectory inside the drum.
During the process of raw material movement, the spraying of adhesive is a crucial step in determining the formation of particles. The selection and use of binders are extremely important. They not only need to have good viscosity to effectively bond the raw material particles, but also ensure that they do not have a negative impact on the nutrients and quality of fertilizers. There are various types of common binders that, under the synergistic effect of moisture, promote the gradual aggregation of small raw material particles.
As the drum continues to rotate, the particles gradually grow through rolling and collision. The new raw materials continue to adhere to the surface of the formed particles, causing the particle volume to continuously increase. At this stage, factors such as the rotational speed, inclination angle, and residence time of the raw materials in the drum play a decisive role in the final shape and quality of the particles.
The rotational speed of the drum directly affects the movement speed and collision frequency of the raw material particles. When the rotation speed is fast, the rolling and collision of particles are more frequent, which helps to form smaller and uniform particles; When the speed is slow, particles have more time to aggregate and grow, making it easier to form larger particles.
The inclination angle of the drum can also have a significant impact on particle formation. A suitable inclination angle can ensure that the raw materials have an appropriate movement path and residence time inside the cylinder, which is beneficial for the uniform growth and shaping of particles.
After a series of complex and exquisite processing steps, qualified fertilizer particles are smoothly discharged from the rotary drum granulator. After subsequent drying, screening and other processes, these particles become high-quality fertilizer products that meet market demand.
In depth analysis of the fertilizer processing secrets of the rotary drum granulator reveals how it achieves efficient and high-quality fertilizer production through scientific design and precise parameter control, providing strong support for agricultural development.