The fermentation process of compound fertilizer equipment mainly involves mixing organic solid waste with a moisture content of less than 60%, auxiliary materials (such as plant straw), microbial fermentation agents, etc. evenly, and using pool type aerobic continuous fermentation to fully decompose, sterilize, deodorize, and remove water. The moisture content of the decomposed material is generally 30-35%. After screening and magnetic separation, it can be directly used to produce spherical Manure or powder Manure after further drying.
The process flow of the compound fertilizer production line can be divided into: raw material batching, raw material mixing, raw material granulation, particle drying, particle cooling, particle grading, finished product coating, and finished product packaging.
Characteristics of compound fertilizer equipment:
1. Applicability and wide range of raw materials: it is suitable for direct granulation of fermented livestock manure, sugar factory filter sludge, urban sludge, paper making sludge, distiller’s grains, straw, peat and other coarse fiber organic wastes with water content of about 30%, and can produce spherical pure Manure, organic and inorganic fertilizer, and biological Manure.
2. High balling rate and microbial survival rate: The new process can achieve a balling rate of over 90% -95%, and the new technology of low-temperature and high air drying can achieve a microbial survival rate of over 90%.
3. The process flow is short and the operating cost is low. The organic raw materials used in this process do not require pre-treatment such as drying and crushing. The process flow is short and the operating cost is low (if traditional granulation processes such as disc or drum are used, the organic raw materials with a moisture content of about 30% after fermentation need to be dried to below 13% and crushed to over 80 mesh, and the amount of organic materials added cannot exceed 30%).
The production process of high concentration composite fertilizers using drum granulators, the production process of high, medium, and low concentration composite fertilizers using disc granulators, the anti caking technology of composite fertilizers, the production technology of high nitrogen composite fertilizers, and the production technology of organic and inorganic composite fertilizers using urea melt spray granulation, etc.