The wet granulation process of the new type two in one organic fertilizer granulator consists of five steps: raw material pretreatment, premixing, primary granulation, secondary rounding, and screening for recycled materials. The raw materials have a high moisture content and are suitable for composted livestock and poultry manure, straw, and sludge.

In the raw material pretreatment stage, the fermented material is crushed to within 2mm using a pulverizer, with a moisture content adjusted to 52%–58%. Excessive moisture content can cause sticking and clogging, while insufficient moisture makes it difficult to form granules. Large pieces of debris and hard impurities are removed through screening, and excessively long coarse fibers are pre-crushed to prevent entanglement in the internal agitator. Various auxiliary materials are pre-mixed to ensure uniform material texture.

After the material is fed into the feed hopper of the organic fertilizer granulator machine, it is forcibly fed into the primary granulation chamber at a uniform speed by an internal spiral feeder. Inside the chamber, high-speed rotating agitators repeatedly knead, shear, and compress the material, forming irregular columnar primary granules based on the inherent viscosity of the organic matter. The particle size is controlled by the rotation speed of the main unit.

The nascent granules enter the secondary polishing chamber, where continuous tumbling and friction between the cylinder and the lifting plates polishes their edges and compacts them, gradually transforming them into rounded spherical granules. This completes the integrated granulation and shaping process, eliminating the need for separate rounding equipment.

The finished product exits from the discharge port and is sent to a drum screen for grading. Particles of 2-4mm are considered qualified finished products. Undersize fine powder and oversize large particles are collected and returned to the pretreatment process for re-granulation, achieving closed-loop powder recycling.

Production control focuses on moisture content and rotation speed. If the material is too wet, the feed rate is reduced and the chamber rotation speed is lowered; if the raw material is too dry, a small amount of atomized water can be added. The inner wall of the cylinder is cleaned after each shift, and worn stirring teeth are replaced regularly to maintain a stable forming rate above 85%. This process requires no pre-drying, has a short equipment series connection, and is widely used in small and medium-sized bio-organic fertilizer production line.