Dissolution Velocity of Oxygen from H₂0-H₂-Ar Atmosphere into Molten Iron.

Studies on the kinetics of gas/molten iron reactions-II

Abstract

As a continuation of the preceding paper, the authors have studied the kinetics of gas/molten iron reactions. In the present work, we measured the rates of oxygen transfer from H₂O-H₂-Ar atmopheres into molten iron. On the basis of the 2-film theory, it was supposedthat there were gas and liquid diffusion layers on each side of gas/molten iron interface, andthat each of the layers had resistance to the mass transfer between both phases. When gasmixtures of PH₂O/PH₂O·7 are used, there are linear relations similar to Henry's rule betweenH₂0 and 0, and then the rate equation: was derived. Experimental results obtained here could be expressed by this equation andgave the rate constants K_L which were in good agreement with the values calculated fromthe data in the preceding paper.