At present, organic fertilizer production lines are divided into three levels of complete sets of equipment based on production capacity: large, medium, and small. The annual production line of 50000 tons of cow manure organic fertilizer is a medium-sized organic fertilizer production line with a production capacity.
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Process flow and supporting equipment of an annual production line for 50000 tons of cow manure granular organic fertilizer
1. Mainly, raw materials containing organic matter (such as sheep manure, pig manure, sludge, chicken manure, duck manure, cow manure) with a moisture content of about 70% are mixed with crushed organic waste (such as straw, corn straw and branches, mushroom residue) and then added with a biological fermentation agent for fermentation.
2. Use a forklift to load the mixed (sheep manure, pig manure, sludge, chicken manure, duck manure, cow manure) and other plant straw into a fermentation and maturation tank, and evenly add fermentation bacteria for maturation.
3. Fermented raw materials can be directly conveyed to the crusher through an automatic material system using a belt conveyor for crushing. The crushed materials can be directly conveyed to the screening machine using a belt conveyor. The screening machine screens out impurities that are not fully decomposed or crushed, and then uses a belt conveyor to transport them to the waste disposal site for processing. The crushed finished powdered organic fertilizer (sheep manure, pig manure, sludge, chicken manure, duck manure, cow manure) can be transported to the finished powdered raw material workshop using a belt conveyor for processing particles (if particles are not processed, they can be packaged, and packaged as powdered organic fertilizer)
4. After fermentation and crushing, the raw materials are accurately proportioned using a forklift into the automatic batching bin and other raw materials (bentonite, humic acid) (with a total nutrient content of less than 25% of nitrogen, phosphorus, and potassium added) to produce organic and inorganic fertilizer compound fertilizers. After proportioning, they are quickly and evenly stirred by a mixer. Before granulation, they are crushed by a crusher. After stirring and crushing, the raw materials are transported by a belt conveyor to the organic fertilizer granulator. A small amount of water is added at the inlet for granulation, and the particles formed by the granulator are then transported by a belt conveyor to the rounding machine for shaping.
5. After rounding and shaping, the particles are fed into a dryer through a belt conveyor. The dryer is used for low-temperature and high air drying (using an inlet temperature of about 400 ℃ ≤ an outlet temperature of about 65 ℃) to remove some moisture from the particles (the moisture content of the particles is around 30 after the first drying),
6. The particles passing through a drying machine are transported by a belt conveyor into a second drying machine, which is then dried at low temperature and high air volume (using an inlet temperature of about 300 ℃ ≤ an outlet temperature of about 65 ℃) to remove some moisture from the particles (after the second drying, the moisture content of the particles is around 20 ℃),
7. The particles that have undergone secondary drying are transported by a belt conveyor into a cooling machine (using a high-power fan at the tail to suck in cold air for cooling, allowing the surface moisture of the particles to quickly condense and enhance their strength). The particles that have undergone high air flow cooling and drying are beneficial for long-term storage (the moisture content of the finished organic fertilizer particles is about 15).
After drying and cooling, the particles are sieved by a belt conveyor through a powder screening machine for finished product screening. The particles that do not meet the requirements are transported to the waste crusher by a (finished particle 2-4mm) belt conveyor for thorough crushing, and then returned to the granulator for further granulation by the return material belt conveyor.
9. After sieving the powder, the particles can be coated by a coating machine and added (functional bacteria can produce bio organic fertilizers)
10. After adding functional bacteria to the coating machine, the particles are transported by a belt conveyor to the second screening machine for particle size screening. The 2mm and 4mm particles can be separated and packaged separately. This way, the particles are more beautiful, and the particles purchased by farmers will not have the phenomenon of large, small, or uneven particles in a bag, because the goods are sold in one piece of skin. (Does the packaging machine use a fully automatic packaging machine with a set of high-level fully automatic palletizing packaging machines?)
11. After being processed by the above equipment, the raw materials (sheep manure, pig manure, sludge, chicken manure, duck manure, cow manure) can be qualified to meet the national requirements for organic fertilizer, organic-inorganic compound fertilizer, bio organic fertilizer, and organic-inorganic microbial fertilizer.