The results of studies on the use of dolomite for the neutralization of phosphoric acid are presented. It has been shown that to obtain single phosphoric fertilizers, phosphoric acid containing 1% ammonium nitrate must be neutralized with dolomite at a stoichiometric rate for the formation of monocalcium phosphate at a temperature of 60 C and a process duration of 30 minutes. After drying, phosphate fertilizers contain at least 98.58% digestible and at least 93.44% water-soluble P2O5.