Feasibility Analysis of Simultaneous Dephosphorization and Vanadium Extraction by Converter

The thermodynamic calculations of element-oxidation in the process of vanadium extraction in converter had been done.The calculated results indicatethat the slag containing calcium can keep P₂O₅ in the slag.The molecular-ion model was established for high calcium vanadium slag system,and the calculations for setted slag shows that effect of the slag on phosphorus-fixation is greatest when P₂O₅ content in the slag is 2% and basicity is 1.9; under the condition of logP_O2=（-5）,phosphorus is fixed by CaO in the form of 3 CaO.P₂O₅,and the effect was the best.It is proved theoretically that it is feasible for simultaneous dephosphorization and extraction of vanadium in vanadium extraction converter.