METHOD OF PRODUCING THERMOPHOSPHATE Russian patent published in 2017 - IPC C05B13/02 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. Method of producing thermophosphate involves mixing ground phosphate material with sodium-bearing compound, burning mixture at temperature 900–1,000 °C and cooling cake, note that as a sodium compound used is wastes of petrochemical synthesis, containing compounds of sodium in an amount ensuring in the mixture components weight ratio Na₂O:P₂O₅= 0.7–0.8, phosphate raw material milled into particles sized no more than 0.2 mm, annealing of the mixture is performed during 15–30 minutes.

EFFECT: invention allows to develop technology of producing thermophosphate using sodium-containing wastes of petrochemical synthesis with simultaneous solution of the problem of recycling said wastes and significantly reduce the process duration.

3 cl, 1 tbl, 12 ex