FIELD: agriculture.
SUBSTANCE: invention relates to agriculture, in particular to obtaining a complex fertilizer using milk whey. The method provides for the interaction of whey with the sorption material, drying the sorption material after this interaction and obtaining a product from it in the form of articles of uniform mass and shape. A natural mineral, serpentinite, is used as a sorption material, and this interaction is carried out by wet grinding of serpentinite in milk whey. At the same time, serpentinite is subjected to grinding, previously ground and kept in milk whey for at least 7 hours. The grinding process is carried out at the initial mass ratio of the solid and liquid phases S:L from 1:1 to 1.3:1 and is carried out until the solid particles reach a size of no more than 0.02 mm. After drying the material obtained by grinding until a moisture content of no more than 25% is reached, it is granulated or briquetted.
EFFECT: ensuring the gradual release of nutrients from the fertilizer after adding it to the soil while expanding the spectrum of useful properties of the fertilizer due to the presence of a number of microelements in it, while maintaining the ability to neutralize excess acidity of the whey with the acquisition of the ability to neutralize the acidity of the soil.
2 cl, 1 dwg, 2 ex
