The penetration of oxygen lance jets in foaming slags

A room-temperature, one-third scale, thin-slice model of an electric arc furnace (EAF) was constructed so that gas could be injected to simulate slag foaming. Oxygen lancing was simulated by injecting air from top lances, submerged and non-submerged, into the foaming bath at a variety of flow rates and lance angles. The penetration depth was measured photographically. Qualitative observations were also made on splashing. A mathematica model was developed to calculate the penetration depth. A drag coefficient between the rising gas in the foam and the jet was introduced and fitted to the experimental results.