The ring die granulator is a core equipment in the production of granular organic fertilizer, known for its high output, high pellet hardness, and excellent formation rate. However, understanding the material requirements of the ring die granulator is essential for achieving efficient and stable production.
1.Suitable Material Fineness
The raw materials must be thoroughly crushed, with a fineness generally required to be between 80 and 120 mesh (0.2mm–0.1mm). Excessively coarse materials have poor fluidity and struggle to pass through the mold holes. If the fineness is too high (exceeding 140 mesh), it may affect the material’s breathability.
2.Precise Moisture Content(13%–18%)
If the moisture is too low, the material lacks flexibility, making it difficult to extrude and form. This results in excessive powder and a very low formation rate. If the moisture is too high, the material becomes overly soft and sticky, easily clogging the mold holes.
3.Appropriate Organic Matter Content and Fiber Structure
Organic matter can generate some viscosity under high pressure, which aids in formation. Short fibrous materials, on the other hand, interweave and bind within the pellets, significantly improving their hardness and drop resistance.
4.Balanced Formula and Uniform Mixing
Various raw materials must be blended in scientific proportions and thoroughly mixed using a mixer. A balanced formula ensures stable nutrient content in the material while also adjusting its physical properties.
In summary, only by pre-treating the raw materials can the advantages of the ring die granulator’s high efficiency be fully utilized to produce high-quality granular organic fertilizer.