Abstract
Chemical compositions of slags and steels at the blow-end of LD converter and various top and bottom blown converters have been collected. The number of the samples was 27 in the conventional LD, 75 in LD-OB, 30 in LD-AB, 23 in STB, and 4 in Q-BOP vessels.
The chemical potentials of P, Fe, Mn and O have been calculated in the slags as well as in the steels from the oxygen pressures in slag measured by oxygen sensors.
The magnitude of non-equilibrium between slags and steels tends to decrease with a decrease of carbon content in steels and with an increase of the amount of gas injected from the bottom.
