Abstract
A plasma-torch and refractory-lined furnace with a 20kg capacity were used to study the kinetics of decarburization of iron melts. Molten iron with an initial carbon content of either 1.1 or 2.6wt% was decarburized using an argon-hydrogen plasma jet. The rate of decarburization was found to be limited by mass transfer in the melt; a mass transfer coefficient of 2.76×10-3cm/s was obtained. Additionally, it was determined that the decarburization reaction occurred only in the region of plasma jet impingement.
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