COMPLEX MAGNESIUM-PHOSPHATE FERTILIZERS FROM SOLID TECHNOGENIC INDUSTRIAL WASTES UNDER TRADEMARK: 'DRY AGRICULTURAL MIXTURES OF RUSSIA'

摘要

FIELD: chemistry.;SUBSTANCE: method of producing complex magnesium-phosphate fertilizers by the mechanochemical method of processing the original technological industrial wastes is proposed: phosphogypsum dump (30%), serpentinite dumps (25%), dumps of silica gel (15%), magnesium sulphate (15%), calcium sulphate (15%), - in a rotary disperser (2000-3000 rpm), without a need of a high-temperature treatment that allows to create the amorphous state of the crystal lattice of phosphogypsum and serpentine, due to the introduction of ions, R⁺⁵ with a large radius in the crystal lattice of MgSO₄, with the substitution in the tetrahedral SO₄^-2 of ions S⁺⁶ with a smaller radius.;EFFECT: invention allows to simplify the technological process, to eliminate a high temperature acid decomposition of serpentine raw material and to involve technogenic raw material - dehydrate hosphogypsum in the process, as a result, the ecological problem of industrial waste disposal is solved.;1 cl