Stirring tooth granulation and disc granulation are two mainstream processes in organic fertilizer processing. Their suitable raw materials and production scenarios differ significantly, making them key considerations for manufacturers when selecting equipment.
The material compatibility of the two technologies differs markedly. The new type stirring tooth-drum granulator uses high-speed extrusion and kneading by stirring teeth to directly process semi-wet fermented raw materials with a moisture content of around 30%, making it suitable for materials such as livestock manure and fermented straw. It does not require deep drying and has wider applicability. Disc granulation relies on the rolling and agglomeration of materials, requiring strict control over the dryness of the raw materials. It is only suitable for dry powder materials; wet materials tend to stick to the disc, resulting in poor forming effects.
The finished product quality differs. Stirring tooth granulation produces dense, hard, moisture-proof, and durable granules that are not easily broken, making it suitable for mass production of high-quality commercial organic fertilizer. Disc granulation technology produces round, aesthetically pleasing granules with better appearance, but the texture is loose, with weak compressive strength, making it prone to breakage and pulverization during long-distance transportation.
In terms of operation and maintenance, the new type stirring tooth-drum granulator method requires no binder, is simple to debug, can operate continuously and stably, and has a low failure rate and low maintenance cost. Disc granulation, on the other hand, has extremely high requirements for material fineness, moisture content, and proportions, relies heavily on manual experience, has a low tolerance for production errors, and its forming rate is prone to fluctuations.
In summary, stirring tooth granulation is the preferred choice for wet material production and for those seeking stable and low-consumption production; disc granulation technology is the preferred choice for raw material drying and for those who value particle quality.