Distribution behavior of vanadium and phosphorus between slag and molten steel

Abstract

The correlation of the equilibrium behaviors of phosphorus and vanadium between slag and low carbon molten steel in inert atmosphere was investigated with respect to the experimental variables of slag basicity, the (P 2 O 5 ) and (V 2 O 5 ) content, and the reaction temperature. The distribution ratios of phosphorus and vanadium increased with an increase in the slag basicity. The logarithms of the vanadium distribution ratio were greater by a factor of about two than those of phosphorus in the range of low slag basicity, but the difference diminished with an increase in the slag basicity. The logarithms of the vanadium distribution ratio increased linearly with an increase in the (P2O5) and (V2O5) content in the slag, while those of phosphorus remained nearly constant. The logarithms of the phosphorus and vanadium distribution ratio decreased with an increase in temperature, and the dependence on temperature was greater for the phosphorus than for the vanadium. For both the maximization of the vanadium yield and the minimization of the rephosphorization of molten steel in the steelmaking process, the ratio of N(V2O5)/N(P2O5), the slag basicity, the ratio of f[P]/f [V], and the temperature should be maximized, and the (FeO) content in the slag should be minimized.

Effects of Alloying Elements on Microstructure, Hardness, Wear Resistance, and Surface Roughness of Centrifugally Cast High-Speed Steel Rolls

“…To improve the wear resistance, in particular, the most important factor is the formation of a number of discontinuous carbides homogeneously distributed inside cells or along cell boundaries. [19][20][21][22][23][24] A. Correlation between Carbides, Wear Loss, and Surface Roughness Figure 11(a) shows the relation between the volume fraction of MC carbide, the M 7 C 3 carbides, and the total carbides and wear loss.…”

Effect of Reduction Degree on Characteristics of Slag Formed by Melting Hydrogen‐Reduced DRI and Partitions of P and V between Slag and Metal

“…Also, some studies on vanadium partition between slag and liquid metal during ironmaking and steelmaking can be found in the literature. [ 16,21–24 ] Selin studied the vanadium partition using synthetic slag of composition relevant to steelmaking with high fraction of charged DRI. [ 16 ] However, there is no work about the V partition after melting DRI.…”