New Type Organic Fertilizer Granulator

New Type Organic Fertilizer Granulator

The new organic fertilizer granulator is an advanced piece of equipment designed specifically for granulating organic materials. It primarily processes fermented organic matter such as livestock and poultry manure, composted fertilizers, green manure, seaweed fertilizer, oil-cake fertilizer, peat, mixed soil-based fertilizers, industrial/agricultural waste, and microbial fertilizers. The equipment can directly process raw materials with a moisture content of 20%–40%, eliminating the need for separate drying or pulverizing steps.
Breaking away from conventional granulation methods, this machine forms solid granules through the mutual interlocking of material micro-particles, allowing for direct batching and granulation. It produces spherical granules with a qualified granulation rate of 80%–90%; the granules exhibit higher compressive strength than those produced by traditional disc or rotary drum granulators, while the rate of oversized granules remains below 15%. Granule uniformity can be adjusted via a variable-speed control function, and the granulation process requires no added binders. The equipment is compatible with the processing of fermented organic fertilizer derived from municipal solid waste and is suitable for organic fertilizer production and the resource utilization of agricultural waste.
This equipment is particularly well-suited for granulating lightweight, fine-powder materials. The finer the basic particles of the material, the higher the sphericity and the better the quality of the resulting granules.

Structural Composition

The structural design of the new organic fertilizer granulator is closely aligned with the requirements of the granulation process:
Machine Body: Comprising the equipment's overall framework and the granulation chamber. It is constructed from welded, heavy-gauge steel plate, providing an internal environment for material granulation. The structure ensures the containment and orderly flow of materials during the granulation process.
Granulation Rotor: The core component that executes the granulation process. The rotor is fitted with specially arranged stirring teeth (granulation teeth) that exert mechanical agitation and aerodynamic forces on the material during high-speed rotation. The arrangement, angle, and density of these teeth directly influence granulation efficiency and granule quality.
Drive System: Composed of a motor, a gearbox, a drive shaft, and other components. The equipment features variable speed control, allowing the granule size to be adjusted by regulating the main shaft speed.
Feeding and Discharge System: The feed inlet is located at one end of the machine body, and the discharge outlet at the other; materials are discharged after granulation is completed inside the machine. This continuous "inlet-at-one-end, outlet-at-the-other" design ensures uninterrupted production line operation.

Principles of the Granulation Process

The granulation process of this new type of organic fertilizer granulator employs a continuous wet-process mechanical agitation technique. Its core principle relies on high-speed mechanical agitation and the resulting aerodynamic forces to continuously mix, granulate, spheroidize, and densify fine powdery materials within the machine.
Mixing Stage: Upon entering the machine through the inlet, the material is thoroughly mixed with the existing contents under the action of the granulation rotor, ensuring a uniform distribution of all components.
Granulation Stage: Driven by the combined effects of high-speed agitation and aerodynamic forces, fine powder particles collide and aggregate to form tiny granule nuclei. Finer raw material particles result in higher sphericity and superior granule quality.
Spheroidization Stage: The granule nuclei continue to tumble within the machine, progressively adsorbing surrounding fine powder, growing in size, and becoming increasingly spherical. Granule diameter can be adjusted by controlling the material feed rate and the main shaft rotation speed; lower feed rates and higher speeds yield smaller granules, and vice versa.
Densification Stage: Under continuous mechanical action, the granules are compacted, their internal structures become denser, and their structural strength increases. The finished granules are discharged from the opposite end of the machine.
This process leverages the ability of organic particles to interlock and grow under specific forces, eliminating the need for binders during granulation. Fermented organic materials do not require drying, and the system accommodates a wide range of raw material moisture content (20%–40%).