On the kinetic characteristics of the reduction and sublimation of phosphorus from melts

Abstract

It is shown that the literature data on the mechanism of the carbothermal reduction and sublimation of phosphorus from oxide melts are contradictory. The results of our studies are presented. An experimental procedure is proposed to calculate the reaction rate on the unit surface of the reducing agent. The regime and kinetic characteristics of the process change with the concentration of P₂O₅ in the oxide melt, the temperature, and the presence of impurities and metallic phase in the melt.