Organic fertilizer production has long faced two major challenges: low granulation rate, high powder content, and a high proportion of recycled materials; and poor granule strength, leading to easy pulverization during transportation and application. Now, a new type organic fertilizer granulator using patented technology is changing this situation.

Core Technology: Wet Granulation + Continuous Operation

Unlike traditional disc or drum granulators, the new machine adopts a wet continuous granulation principle. After the material enters the chamber, it is thoroughly mixed with atomized water or binder solution. Under the action of a high-speed rotating rotor or agitator, the material fluidizes and rapidly agglomerates into spheres through compression, collision, and adhesion.

Two Major Technological Innovations:

1. Integrated Design of Forced Mixing Zone and Pelletizing Zone

Traditional equipment requires pre-mixing before granulation, which easily leads to material stratification. The new type of machine is divided into multiple functional zones within a single cylinder: a high-speed shearing blade at the inlet breaks up sticky, wet materials into “seed kernels”; a low-speed stirring section allows the seed kernels to absorb dry powder and grow during rolling; and the outlet controls the particle residence time through adjustable baffles. The entire process involves continuous feeding and discharging, eliminating the need for intermediate transfer.

2. Precise Spraying and Humidity Control

The equipment incorporates a built-in annular water pipe and high-pressure atomizing nozzles (0.5-1.0mm orifice diameter), which atomize water or liquid binder into fine droplets of 50-100 microns, evenly coating the surface of each material particle. Combined with an online humidity sensor, the spray volume is automatically adjusted to maintain the humidity in the granulation zone within the optimal range of 25%-35%, preventing excessive moisture (forming mud) or excessive dryness (failing to form pellets).

Two Core Advantages: Increased Granulation Rate and Doubled Particle Strength

High granulation rate and less return material: In traditional disc granulators, the single-pass granulation rate is typically around 70%, requiring a large amount of screened material to be returned for crushing and regranulation. The new type organic fertilizer granulator achieves a single-pass granulation rate of 85%-92%, significantly reducing the proportion of undersized fine powder and decreasing the circulating load of the entire production line by approximately 40%, resulting in a significant increase in production capacity with the same energy consumption.

The granules exhibit high strength and are less prone to pulverization: Due to the compression and rearrangement of the material during granulation, the internal structure becomes more compact. The compressive strength of the finished granules can reach 20-35N, more than double that of traditional processes (8-15N). This means a significant reduction in granule breakage during packaging, stacking, and mechanical application.

Suitable Raw Materials: Pure organic fertilizer and organic-inorganic compound fertilizer

This equipment is primarily designed for organic materials but is also compatible with mixed formulations:

Pure organic fertilizer: Fermented and decomposed chicken manure, cow manure, pig manure, mushroom residue, straw powder, etc., with a moisture content of 20%-35%, and finely pulverized (80% passing through a 40-mesh sieve). Organic-inorganic compound fertilizer: Adding 10%-30% nitrogen, phosphorus, and potassium fertilizers (urea, potassium chloride, diammonium phosphate, etc.) to organic materials can produce granular fertilizers with more comprehensive nutrients. Note that the urea ratio should not exceed 15%, otherwise it may cause sticking due to moisture absorption.

Bio-organic fertilizer: The granulation temperature can be controlled below 40℃ (through cooling water circulation in the shell jacket) to avoid killing the added functional bacteria at high temperatures.

Before introducing a new type organic fertilizer granulator, it is recommended to conduct a raw material compatibility test: Take 50 kg of fermented material and test its moisture content, organic matter content, and fiber length (≤5mm). If the fibers are too long, they need to be processed using a semi-wet pulverizer first. In equipment selection, focus on stainless steel material (corrosion resistant), easy-to-disassemble and clean nozzle design, and sealing performance (to prevent atomized water overflow).

During daily operation and maintenance, rinse the inner wall of the chamber and rotor with clean water after each shift to prevent material from drying out; remove the nozzles every two weeks to check for blockages; check the wear of the rotor blades monthly, and replace them when the wear exceeds 3mm. If you do these things well, the equipment can run stably for 5-8 years, continuously producing high-quality organic fertilizer granules for you.

The new type organic fertilizer granulator (wet continuous granulation) offers significant advantages: single-pass granulation rate 85%-92% (vs. 70% for disc), granule compressive strength 20-35N (vs. 8-15N), and reduced circulating load by ~40%. Its integrated design of forced mixing and pelletizing zones, precise spraying, and humidity control (25%-35% moisture) make it ideal for pure organic and organic-inorganic blends. This machine is a key member of the organic fertilizer granulator series. In contrast, a disc granulator is simpler but has lower granulation rate and strength. For a complete organic fertilizer disc granulation production line, the disc granulator is the core, but the new type granulator offers superior performance. Before granulation, organic fertilizer raw material processing equipment such as a half-wet material crusher machine is essential to prepare the material (moisture 20%-35%, 80% through 40-mesh, fiber length ≤5mm). The organic fertilizer production equipment set includes crushers, mixers, granulators, and screens. For bio-organic fertilizer, the granulation temperature can be controlled below 40°C (cooling water circulation) to preserve microbial activity. Key maintenance: rinse the chamber and rotor with clean water after each shift, check nozzles for blockages every two weeks, and check rotor blade wear monthly (replace if >3mm). Properly maintained, the equipment can run stably for 5-8 years. Understanding the trade-offs between the new type organic fertilizer granulator and a disc granulator is key to selecting the optimal organic fertilizer production equipment for your raw materials and production goals. This new technology addresses the long-standing challenges of low granulation rate and poor granule strength, enabling continuous, high-quality organic fertilizer production.