Production process of organic fertilizer:

The organic fertilizer production process of this project is as follows:

Fermentation: the livestock manure (dry manure) is transported to the fermentation tank through the transport vehicle, and the raw materials such as humic acid, chelating agent and amino acid are put into the fermentation tank in a certain proportion. At the same time, biological strains are added to convert the animal manure into organic fertilizer components.

This project mainly uses pig manure, cow manure and sheep manure as raw materials, ferments by high temperature aerobic composting technology, and then goes through post-ripening treatment, and finally is processed and granulated to produce highly efficient and green refined organic manure. The main production technology of organic fertilizer in this project

Including raw material pretreatment, composting, secondary fermentation, screening, granulation, cooling, packaging and other processes, as shown in Fig. 5-1. Among them, powdery organic fertilizer without granulation process, directly into powdery products.

The preliminary raw materials are premixed after fermentation treatment. When premixed according to the production of organic fertilizer formula, add a certain amount of N/PK and trace elements.

Three raw material pretreatment:

The pretreatment of raw materials mainly includes the crushing of auxiliary materials, the charging and mixing of fermentation raw materials. Stalks and other auxiliary materials were crushed to 3-5cm long. The pig manure in the factory is transported to the pretreatment area by pipeline from the pig house. (The pig manure outside the production area needs to be fermented with bacteria.

After sterilization, the pig manure and auxiliary materials are laid in layers with a thickness of 20cm each. From the inside to the outside, the pig manure is evenly mixed by the throwing machine. Fermentation bacteria are mixed when evenly turning.

Fermentation and decomposing process includes mixed composting fermentation and secondary decomposing fermentation. Mixed composting fermentation refers to aerobic fermentation and decomposing of mixed materials through tank aerobic fermentation system. The bottom of the fermentation tank is equipped with a ventilation system for compulsory use

Ventilation and oxygen supply, turn the material evenly with a thrower, turn the material every 3-5 days, aerobic fermentation cycle is 30 days. After the aerobic fermentation, the fermentation materials will be transported to the secondary decomposing workshop. The secondary decomposing refers to the aerobic fermentation in the form of strip stacker

The product is rotated twice to reach the standard of organic fertilizer. The material is evenly rotated with a thrower. The rotated material is rotated once every 5-7 days, and the second rotated period is 15 days.

After the secondary decomposition of the material, the production of powdered organic fertilizer by adding biological agents, mixing, cooling and screening, packaging and storage of the same steps, the production of powdered organic fertilizer.

After the secondary decay of the material, the production of granular refined organic fertilizer in turn for batching, mixing, granulation, cooling screening, packaging and storage steps, the production of granular refined organic fertilizer.