The Cold Model Study on the Decarburization Rate in Oxygen Steelmaking Processes by CO2/KOH System

Abstract

Themodelexperiments using KOHsolution / air-CO2mixture gas jet are conducted to understand the effects of blowing conditions on reacting interfacial area in simulation of decarburization in the oxygen steelmaking. The fast pseudo-1st-order reaction regime is adopted by the chemical absorption theory to observe gas/liquid interfacial area which is the most important controlling parameter in the decarburization kinetics of high carbon regime. The result showsthat the reacting interfacial area is greatly dependenton injecting gas fiow rate, nozzle diameter, injection schemeand aspect ratio of the reacting volume It is deducedthat these effects are closely related with physical aspects of two-phase jet structure An intuitive model for the jet effect on the reactivity is suggested. © 1990, The Iron and Steel Institute of Japan. All rights reserved.