FIELD: agriculture.
SUBSTANCE: method of producing organomineral fertilizer involves wet grinding of a natural mineral – serpentinite in a liquid medium containing a recycled product, wherein said grinding is subjected to serpentinite, previously ground to a particle size acceptable for used in wet grinding equipment, and maintained in said liquid medium, wherein said liquid medium used is a mixture of recycled product with deionised water, and recycled product is vegetable oil or its wastes, wherein maintenance of serpentinite in said liquid medium before wet grinding is carried out for at least 9 hours, wet grinding process is carried out at initial weight ratio of solid and liquid phases in treated material S:L from 0.9:1 to 1.2:1 and initial weight ratio of vegetable oil or its wastes and deionised water in liquid phase O:W from 0.1:1 to 0.3:1 and it is carried out until solid particles reach a size of not more than 0.03 mm to obtain a finished product in the form of a suspension as a result of such grinding.
EFFECT: invention makes it possible to ensure gradual release of useful substances from fertilizer after its application to soil, to eliminate odours, to impart plasticity to fertilizer, as well as to increase efficiency of the process.
3 cl, 4 tbl, 4 ex
