METHOD FOR OBTAINING GRANULATED ORGANO-MINERAL COMPLEX FERTILIZER OF PROLONGED ACTION Russian patent published in 2023 - IPC C05F11/02 C05B9/00 

FIELD: agriculture.

SUBSTANCE: production of an organo-mineral complex fertilizer of prolonged action, which can be used to grow various crops. The method includes mixing peat and struvite in a ratio of 1.36:1-02.33:1 by weight of air-dry components. To improve their mixing, the struvite is pre-suspended in water, the amount of water is calculated to obtain a paste with a moisture content in the range of 40-60 wt.%. The resulting paste is granulated at a temperature of 18-25°C by the extrusion method, the granular material is dried at a temperature not exceeding 25°C.

EFFECT: obtaining fertilizer granules with a static strength of 1.2-3.0 MPa, improving the quality of the fertilizer through the use of a mineral component with a higher nitrogen content, and not having the ability to lose ammonia nitrogen during the production of fertilizer in granular form.

1 cl,1 dwg, 4 tbl, 3 ex