The influence of temperature, time, and excess of I(CZ in a reaction mixture on the yield of KVO3 synthesis based on KCI and V2O5 in the presence of steam was determined. The reaction temperature was varied between 673 and 823K and the time ranged from 4 to 6 h. The required optimum excess of KCl in the reaction mixture and time of processing were identified. The results are implemented in a database to determine an alternative, nonwaste method of potassium carbonate production.