The resource utilization of livestock and poultry manure is a critical environmental requirement for the modern livestock industry. However, processing granular organic fertilizer presents significant challenges due to the high fiber content, uneven viscosity, and difficult pelletizing characteristics of the manure. Featuring an exceptionally high pelletizing rate and a structure specifically adapted to manure raw materials, this specialized disc granulator unit has become the mainstream core equipment for farms and small-to-medium organic fertilizer plants processing pig, chicken, and cattle manure. The system offers mature technology and stable operation, effectively resolving common pain points such as failure to form pellets, high material loss, and equipment clogging.
Centered around the disc granulator, the complete unit integrates crushing, mixing, spraying, material clearing, and screening/recycling systems, operating on the principle of wet agglomeration. During operation, fermented and matured manure (with moisture content adjusted to 28%–35%) is evenly fed into the inclined disc. Driven by a motor at a constant speed, the disc causes the material to tumble continuously under the combined forces of centrifugal action, gravity, and friction. A spraying system adds moisture evenly; fine powder first agglomerates into “seed” granules, which then grow layer by layer by adhering to more powder as they roll. Granules meeting size specifications automatically spill over the disc rim, while finer particles remain inside to continue the formation process. The pelletizing rate consistently reaches 85%–90%—far exceeding traditional equipment—while significantly reducing raw material waste.
The main granulator unit incorporates multiple optimizations specifically for livestock manure: the disc inclination angle is continuously adjustable between 30° and 60°, and the rotation speed (15–30 rpm) can be flexibly matched to different materials like chicken or cattle manure. The polished inner disc wall, combined with an automatic scraper, prevents high-moisture manure from sticking or accumulating, enabling 24-hour continuous production. Additionally, the disc body is constructed from thickened, corrosion-resistant, and wear-resistant materials capable of withstanding the acidic and alkaline nature of manure, ensuring a longer service life. The entire unit features a seamless process flow; manure requires no intensive pre-processing or fine grinding and can be granulated directly by mixing it with straw and sawdust in a 7:3 ratio. It produces smooth, dense granules with adjustable diameters (2–6 mm), and the final product—following drying and screening—is uniform in quality, making it easy to store, transport, and apply to farmland. Additionally, the equipment boasts a simple structure and intuitive operation, allowing staff to monitor granulation in real-time; troubleshooting and routine maintenance are straightforward, enabling small and medium-sized farms to commence production without the need for specialized technical personnel.
In summary, this disc granulation unit—designed specifically for livestock manure—leverages a scientifically engineered mechanical forming structure and specialized design modifications to achieve high granulation rates, minimal material loss, and continuous production. It simultaneously solves the challenge of environmentally responsible manure disposal and transforms waste into high-value organic fertilizer, balancing environmental and economic benefits. It is a highly cost-effective solution for the resource-oriented processing of livestock manure.
