In fertilizer production equipment, the drying process directly affects the purity, strength and storage stability of the product, and the drum dryer has become the core equipment for fertilizer drying with its targeted design. How does it accurately adapt to the characteristics of fertilizer materials? Its working principle is hidden. Its working principle is hidden, and it can perfectly meet the drying needs of different types of fertilizer production lines such as organic fertilizer production lines and compound fertilizer production lines.

When the wet fertilizer material with high water content enters the drum with an inclination angle of 2°-5° from the feed end, it is evenly lifted by the special lifting plate as the drum rotates. These lifting plates are designed in an arc shape to prevent the fertilizer particles from breaking, while allowing the material to form a uniform material curtain to ensure that every grain of fertilizer can fully contact the heat medium.
At the same time, the purified hot air (temperature precisely controlled at 80-120℃) passes through the material curtain in the reverse direction. This temperature range can quickly evaporate water without destroying the effective ingredients in the fertilizer. The heat in the hot air vaporizes the surface moisture of the fertilizer particles quickly through convection and conduction, and the internal moisture continues to migrate to the surface, achieving deep drying.
The dehumidification system at the end of the drum will discharge ammonia-containing water vapor in time to avoid secondary moisture absorption. By adjusting the drum speed (usually 3-8 rpm), the residence time of the fertilizer in the drum can be accurately controlled to ensure that the moisture content of the finished product is stable below 2%, meeting the subsequent granulation and storage requirements.
Whether it is the decomposed material of organic fertilizer or the mixed granules of compound fertilizer, this drum fertilizer dryer can achieve efficient and quality drying through the optimized working principle, and escort the quality and efficiency of fertilizer production.