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Hot model experiments of the metal bath spraying effect during the decarburization of Fe‐C melts through oxygen top blowing
Author(s) -
Koch Klaus,
Falkus Jan,
Bruckhaus Ralf
Publication year - 1993
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199300976
Subject(s) - decarburization , slag (welding) , metallurgy , oxygen , refining (metallurgy) , nozzle , basic oxygen steelmaking , ladle , materials science , metal , steelmaking , chemistry , thermodynamics , physics , organic chemistry
During recent years decarburization has been steadily gaining importance in converter steel metallurgy at the expense of refining reactions for other slag‐forming companion elements. Because decarburization is currently a low‐slag operation, the phase contact between gas and metal is critical. With the decrease in the amount of slag foam, more attention must be paid to the spraying of iron droplets during oxygen blowing. The experiments were carried out in a hot model reactor with a 50 kg capacity by oxygen top blowing upon Fe‐C melts. The resulting spray of iron droplets was collected with the help of a special droplet sampler in the blowing converter. In the metal droplets a pronounced enhanced decarburization was found in comparison to the metal bath. The amount of metal spray was determined with respect to the oxygen blowing pressure, nozzle diameter, and distance between the lance and bath. Depending on the reactor contents, a high circulation rate of the droplets could be observed. At low blowing rates, FeO‐slag is formed and sprayed along with the metal.