Capacity: 5-15 tons/hour
Granulation Type: Wet Granulation
Pellet Characteristics: High hardness, uniformity, and roundness
Pellet Formation Rate: 93%
Suitable Materials: Materials with high fiber content (straw compost) or slightly less sticky, dry and loose materials (straw charcoal, weathered coal).
Drum: Mostly a horizontal cylinder constructed from rolled and welded steel plates. The inner wall can be equipped with a skiving plate or a smooth surface to accommodate different material tumbling requirements.
Agitator: Attached to the inner wall or central axis of the drum, typically made of wear-resistant alloy steel, it features a spiral or paddle-shaped design and is used to cut and agitate the material.
Drive System: Consists of a motor, reducer, pulleys, gears, and other components, providing power for the drum and agitator.
Liquid Spray System: Sprays binder or water into the drum to assist in granulation.
Frame: Typically constructed from welded channel steel and angle steel, it supports the drum, agitator, and other components, ensuring stable operation.
Application Areas
1. Organic Fertilizer Production: Processing various organic wastes into granular organic fertilizer improves its quality and market competitiveness, and is widely used in agricultural planting, horticulture, and other fields.
2. Bio-Organic Fertilizer Production: Suitable for the production of bio-organic fertilizer, it helps maintain the activity of biological bacteria and improves the fertilizer efficiency of bio-organic fertilizer.
3. Organic-Inorganic Compound Fertilizer Production: Organic materials and inorganic fertilizers are mixed and granulated to produce organic-inorganic compound fertilizers to meet the needs of different crops and soils.
Working principle of Rotary Drum Churning Granulator：
The materials are first mixed and kneaded by a sprocket mill until they form agglomerates. They then enter the rotating drum through rolling friction, further compacting them into balls and agglomerating them into granules.
Mixing and agitation: Pretreated organic materials enter the rotating drum. The agitator teeth rotate at high speed, vigorously agitating, shearing, and mixing the materials, ensuring uniform distribution and initial agglomeration.
Extrusion and nucleation: The mechanical force of the agitator teeth squeezes and kneads the wet materials, gradually forming tiny particles. Capillary forces and mechanical pressure bind the particles together, while moisture and binders help them bond.
Rolling and growth: As the drum rotates, the particles roll along the drum wall under centrifugal force, continuously attracting fine powder and gradually increasing their size. The intermittent agitation provided by the agitator teeth ensures particle uniformity.
Sieving and discharge: The formed particles are separated by a screen at the discharge port. Unqualified particles are screened and returned for re-granulation.
Advantages of Rotary Drum Churning Granulator:
1. Wide Application:
Can process a variety of organic wastes, including livestock and poultry manure, straw, mushroom residue, medicinal residue, and municipal sludge.
2. Excellent Granulation:
High granulation rate, regular granule shape, uniform particle size, and sphericity ≥ 0.7.
3. Advanced Technology:
Utilizing a new wet continuous pusher granulation process it eliminates the need for drying the raw materials, saving energy and time.
4. Easy Operation and Maintenance:
Compact structure and easy operation, requiring only regular replacement of the agitator blades, resulting in low maintenance costs.
Model | ASLZJZ-1660 |
Installation Angle(°) | 2-2.5 |
Capacity(t/h) | 5-8 |
Total Power(kw) | 45+15 |
Moisture of Feeding Material(%) | 20-40 |
Size of Feeding Material(mesh) | 50 |
Dimensions(mm) | 7500*2200*2250 |
How does the organic fertilizer rotary drum granulator combine the advantages of a drum and teeth?
This device combines the "rolling agglomeration" of a drum granulator with the "powerful mixing" of a tooth granulator. Features. The tilted rotating drum causes the material to tumble overall, while the high-speed internal agitator teeth shear, break up, and squeeze the material. This dual action accelerates the agglomeration of fine particles. The drum provides a macroscopic space for particle formation, while the agitator teeth enhance local mixing and bonding. This is particularly suitable for organic raw materials with low viscosity or high fiber content, ensuring particle uniformity while improving granulation efficiency.
What is its core advantage compared to simple drum granulators or agitator teeth granulators?
The core advantage lies in its wider adaptability: For low-viscosity raw materials (such as composted straw), the mechanical force of the agitator teeth can compensate for insufficient bonding; for high-fiber materials, the gentle tumbling of the drum reduces fiber entanglement and prevents localized clumping. Furthermore, the granulation rate is higher (typically ≥92%), and the particle strength is intermediate between the two. By combining the low energy consumption of the drum with the rapid granulation of the agitator teeth, overall production efficiency is improved. 10%-20%.
How can particle size and shape be controlled? Can multiple specifications be achieved simultaneously?
Particle size can be adjusted in three ways: drum speed, agitator speed, and material moisture content. The shape is primarily near-spherical, with a sphericity ≥0.8. If multiple specifications are required, a grading screen can be installed after discharge. By replacing the screen mesh, different particle sizes can be separated without frequent adjustments to equipment parameters.
What are the key points of daily maintenance? Which components require frequent inspection?
Daily maintenance should cover both the drum and agitator: ① Daily check the agitator wear (for deformation or nicks) and remove entangled fiber impurities; ② Weekly check the lubrication of the drum support bearings and replenish high-temperature grease; ③ Monthly calibrate the drum tilt angle (to prevent vibration-induced deviation) and check the drive belt tension. Consumable parts include the agitator teeth (made of high-chromium cast iron, which is wear-resistant but requires regular replacement), the drum lining (replaced every 1-2 years), and the spray system nozzles (to prevent clogging).
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