Dephosphorization and Desulfurization of Acid Oxide Melts and Produced Iron

Experimental data are given for a study of dephosphorization and desulfurization of acid oxide melts. Results are provided for determination of phosphorus distribution between phases within acid melts. It is shown that diffusion mass transfer is a limiting stage for phosphorus removal into a gas phase. A two-stage preparation scheme is proposed for iron preparation from ore materials: melting a charge with low basicity (less than 0.9) without adding reducing agents, then oxide melt reduction with preparation of finished metal. The fundamental possibility of preparing iron with a low phosphorus and sulfur content by the suggested scheme is confirmed by experiment.