In the organic fertilizer production line, the commonly used raw material treatment is an important link in the production process of microbial fertilizer. Whether the treatment is appropriate will directly affect the fermentation effect and the utilization rate of raw materials. How to deal with the raw materials in the production of microbial organic fertilizer?

The bean cake should be crushed to proper size, which is convenient for moistening and cooking. The degree of soybean cake comminution should be fine and uniform. The particle size should be 2-3 mm, and the amount of powder should not exceed 20%. Bran should be light, loose and need no further treatment, but it should be fresh, mould free and pollution-free.

Raw materials can be used for moistening with cold water, warm water or hot water. But the effect of near boiling hot water is better: not only the time of moistening is short, but also the protein can be heated and solidified without viscosity, reducing the loss of soluble components. Therefore, hot water is often used. In the production process of fertilizer equipment, it is necessary to strictly control the water holding capacity of raw materials, which can be based on the moisture content of clinker, generally 47% - 48% in winter, 48% - 49% in spring and autumn, 49% - 51% in summer.

The steaming material can make the protein in the raw material moderately denatured. Generally, the steaming material should be one cooked, two soft, three loose, four non sticky, five non sandwiched, six clinker's inherent color and aroma, and provide the basis for enzyme decomposition and microbial long-term utilization. At the same time, the microorganism attached to the raw material is killed to improve the safety of production. After steaming, it must be cooled quickly and the caked part must be broken. The rotary cooking pot with decompression cooling equipment can be directly cooled in the pot for inoculation and cultivation.