| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.36 ( July 1987 ) Overseas Engineering Operations ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| The KTB Method in the World Steel Industry:Recent Progress in Kawasaki Steel's Advanced Top Oxygen Blowing Method for the Vacuum Degasser Takeshi Ehara, Kazuyoshi Nakai, Masakazu Fujioka |
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Synopsis : The KTB method is a process which supplies oxygen gas to the vacuum chamber of recirculating-type degasser through a water-cooled lance. Although the KTB technology was originally developed by Kawasaki Steel to meet the increasing need for stable mass production of ultra-low carbon steel, it has won an excellent reputation not only for its effectiveness in increasing decarburization efficiency, but also for improving operation and cost performance in the steelmaking shop as a whole. To date, 29 KTB units (including 6 at Kawasaki Steel) have been installed by steel mills in and outside of Japan. In all cases, the anticipated results have been achieved. Users have also applied the KTB method to a wide range of applications and purposes other than the decarburization of ULC steel, including the refining of high alloy steel, desulfurizing in the vacuum vessel, and temperature control. This report summarizes the benefits of the KTB method based on reports published by user companies, and discusses the possible directions for future development. |
| TextiPDF: 7p./372kbj |