2026/11/14
In organic fertilizer production, the mixing and granulation stages are intrinsically linked. A fertilizer horizontal mixing machine ensures that complex raw materials are thoroughly blended, while a disc granulator rolls this uniform mixture into granules. In essence, this synergy leverages the "uniformity" achieved in the initial stage to produce well-formed, "spherical" granules in the subsequent stage.
The complexity of organic fertilizer raw materials—ranging from manure and straw powder to fungal residue and humic acid—poses a significant challenge for the mixing process, as these materials vary greatly in density, moisture content, and fiber length. Horizontal ribbon mixers utilize a rotating main shaft equipped with paddles or ribbons to induce both axial and radial movement, creating a convective mixing effect. For high-moisture, sticky manure, a dual-shaft paddle configuration provides the necessary shear force to break up clumps; for lightweight, bulky materials like straw powder, a ribbon configuration prevents the material from floating or stratifying.
The requirements for the feed material in disc granulation are precisely met by the mixing stage. Disc granulators rely on the natural rolling motion of materials across an inclined, rotating disc to form spheres. If the moisture, nutrient content, or particle fineness is uneven, the material will form spheres at inconsistent rates, leading to non-uniform granules and an increased rate of material that must be recycled back into the process. Horizontal ribbon mixers can also incorporate atomized water injection during the blending process, adjusting the material to the optimal moisture level for granulation (typically 15%–25%) and minimizing the need for moisture adjustments within the disc itself.
Three key factors should be considered when integrating these processes: First, ensure capacity alignment—the batch processing volume of the mixer must match the continuous feed rate of the disc granulator, with a buffer silo installed to prevent delays or material accumulation. Second, optimize the process sequence—the mixer should be positioned after the pulverization stage and before granulation, ensuring that fine powders are thoroughly blended before entering the disc. Third, prioritize maintenance—paddles or ribbons must be replaced promptly when worn; otherwise, "dead zones" (areas with poor mixing) will expand, resulting in reduced overall uniformity.
