Influence of Mass Transfer Upon Surface Phenomena in Iron and Steelmaking

Some Investigations into the Dynamic Mass Transfer at the Slag–Metal Interface Using Sulfur: Concept of Interfacial Velocity

“…[1][2][3][4][5] Interfacial phenomena studies mainly focusing on Marangoni forces and interfacial tensions have also been dealt with extensively. [6][7][8][9][10] The potential drive for this extensive research is the importance of interfacial reactions in metallurgical process occurring during metal refining, degasification process, and slag entrapment. However, some issues with respect to the interfacial properties need to be addressed, viz.…”

In memoriam : Jacques Leclerc

“…Il a demandé à l'Irsid d'étudier les poudres de couverture : il fallait trouver des poudres dont les propriétés physico-chimiques qui étaient connues pour assurer la qualité des produits, devaient rester stables dans le temps. Les développements ont conduit la société Anzinminéraux à fournir des poudres de couverture réalisées avec des approvisionnements en matières premières connus et constants dans le temps, adaptées à différentes conditions de coulée [16,17].…”

Interfacial Phenomena in Metal–Slag–Gas System during AOD Process

“…[8][9][10][11][12][13] Intensity of reactions and mass transfer between the slag and the metal were demonstrated by decreasing slag-metal interfacial tension. For example in Fig.…”

“…During intensive mass transfer between the slag and the metal, the interfacial tension decreased to very low value and remained low level until the system approached its chemical equilibrium. 8) Riboud and Lucas 9) researched reactions between slag and iron containing oxidizable alloying elements (Al, Ti, Si and Cr) and found out that dynamic interfacial tension tends to zero when oxygen flow is more than 0.1 mol/m 2 /s. Dynamic interfacial tension during reaction between Fe-Al alloy and CaO-SiO 2 -Al 2 O 3 slag was 0.274-0.44 N/m lower than equilibrium value according to the Rhamdhani et al 12) Since the reactions have an essential role when considering the interfacial phenomena in metallurgical metal-slaggas systems, it is necessary to take the influence of reac- Significance of interfacial phenomena and properties such as surface tension are essential in iron and steelmaking processes due to chemical reactions occurring on the interfaces including elements transfer through the phase boundaries.…”

“…According to the literature, reactions in the gas-metal [5][6][7] and metal-slag [8][9][10][11][12][13] interface can influence dramatically on the value of interfacial tension between studied phases depending on the reaction rate. Mass transfer across the interface during reactions weakens the balance between the phases at the interface.…”