Tag: organic fertilizer granulation machine

In organic fertilizer production lines, a rotary drum granulator is the core equipment for raw material formation. It has become a mainstream choice because it meets the cohesiveness and granularity requirements of organic fertilizers such as livestock and poultry manure and composted straw. Its operation revolves around “raw material mixing – granule agglomeration – screening and output,” resulting in an efficient and stable mechanism.

The equipment primarily consists of an inclined drum (3°-5° inclination), a transmission system, a spray system, and a scraper assembly. Scrapers on the inner wall of the drum drive the material to tumble, while the spray system regulates moisture. The scraper removes material adhering to the drum wall to prevent clogging.

The first step is “raw material pretreatment and feeding.” Composted and crushed organic fertilizer raw materials (25%-35% moisture) are mixed with auxiliary materials such as clay in a suitable proportion and then fed into the drum through the feed port. The motor drives the drum to rotate at a low speed of 10-15 rpm. The scrapers repeatedly lift and drop the material, forming a uniform layer.

The second step is the core “granule agglomeration and formation” phase. A spray device applies a metered amount of water or adhesive, depending on the moisture content of the raw materials, to create a sticky surface. As the drum rotates continuously, the material particles agglomerate into small particles through collision, friction, and compression. These small particles further absorb the raw materials and grow to qualified granules of 2-5mm. The tilted design of the drum allows the particles to naturally move toward the discharge end, enabling continuous production.

The final step is “granule screening and optimization.” The formed granules are screened to separate fine powder from bulky material. The fine powder is returned to the granulator, while the bulky material is crushed and reused to ensure acceptable yields. Furthermore, a scraper cleans the drum wall of any residue in real time to ensure efficiency and prevent hardened residue from affecting subsequent production.

In short, the rotary drum granulator uses gentle physical agglomeration to adapt to the characteristics of organic fertilizer raw materials, efficiently producing uniform granules and providing a key guarantee for the stable operation of organic fertilizer production lines.

In organic fertilizer production lines, a rotary drum granulator is the core equipment for raw material formation. It has become a mainstream choice because it meets the cohesiveness and granularity requirements of organic fertilizers such as livestock and poultry manure and composted straw. Its operation revolves around “raw material mixing – granule agglomeration – screening and output,” resulting in an efficient and stable mechanism.

The equipment primarily consists of an inclined drum (3°-5° inclination), a transmission system, a spray system, and a scraper assembly. Scrapers on the inner wall of the drum drive the material to tumble, while the spray system regulates moisture. The scraper removes material adhering to the drum wall to prevent clogging.

The first step is “raw material pretreatment and feeding.” Composted and crushed organic fertilizer raw materials (25%-35% moisture) are mixed with auxiliary materials such as clay in a suitable proportion and then fed into the drum through the feed port. The motor drives the drum to rotate at a low speed of 10-15 rpm. The scrapers repeatedly lift and drop the material, forming a uniform layer.

The second step is the core “granule agglomeration and formation” phase. A spray device applies a metered amount of water or adhesive, depending on the moisture content of the raw materials, to create a sticky surface. As the drum rotates continuously, the material particles agglomerate into small particles through collision, friction, and compression. These small particles further absorb the raw materials and grow to qualified granules of 2-5mm. The tilted design of the drum allows the particles to naturally move toward the discharge end, enabling continuous production.

The final step is “granule screening and optimization.” The formed granules are screened to separate fine powder from bulky material. The fine powder is returned to the granulator, while the bulky material is crushed and reused to ensure acceptable yields. Furthermore, a scraper cleans the drum wall of any residue in real time to ensure efficiency and prevent hardened residue from affecting subsequent production.

In short, the rotary drum granulator uses gentle physical agglomeration to adapt to the characteristics of organic fertilizer raw materials, efficiently producing uniform granules and providing a key guarantee for the stable operation of organic fertilizer production lines.

The stable operation of organic fertilizer production equipment is key to ensuring fertilizer quality and production efficiency. A scientific maintenance system can effectively extend equipment life and reduce the risk of failure. Targeted maintenance measures are required for equipment throughout the entire process, from pretreatment to finished product packaging, tailored to its characteristics.

Maintenance of pretreatment equipment focuses on preventing blockage and wear. As the first step in processing raw materials such as straw and manure, the crusher requires daily inspection for blade wear and weekly sharpening to prevent blunting and reduced pulverization efficiency. Screening machines require regular cleaning of residual fiber debris and monthly inspection of screen tension to prevent vibration-induced loosening that reduces screening accuracy. For conveying equipment, special attention should be paid to the tightness of the conveyor belt and the lubrication of the rollers to prevent failures caused by frictional overheating.

Granulating equipment requires timely cleaning and maintenance. The disc granulator‘s disc should be cleaned of residual particles daily and coated weekly with an anti-stick coating to prevent material from clumping and sticking. Bearings should be lubricated with high-temperature resistant grease monthly to ensure smooth rotation. The roller surface of the roller granulator should be regularly inspected for wear and any dents should be repaired promptly to avoid compromising pellet quality.

Maintenance of post-processing equipment focuses on precision and safety. The hot air ducts of the drum fertilizer dryer should be cleaned of dust monthly to prevent blockages that affect thermal efficiency. The temperature sensor should be calibrated weekly to ensure precise control of the drying temperature. The fan filter of the cooler should be cleaned regularly to prevent debris from entering and affecting heat dissipation. The metering device of the packaging machine should be calibrated weekly, and the drive chain of the conveyor belt should be lubricated monthly to ensure accurate quantitative packaging.

Establishing an equipment maintenance mechanism provides long-term protection. Recording the time, content, and troubleshooting of each maintenance session can help identify recurring problems promptly. Operators should also receive professional training to ensure early resolution of minor faults and early prevention of major problems. Scientific maintenance not only reduces equipment failure rates but also ensures the continuity and stability of the organic fertilizer production line, providing reliable support for the green development of agriculture.