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Vol.48, No.5, 424 ~ 430, 2010
Title
Effects of Additional Bubbling on RH Vacuum Degassing Process with Water Model Experiment
장영환 Young Hwan Jang , 김영태 Young Tae Kim , 이경우 Kyung Woo Yi
Abstract
In the RH process, it is possible to obtain quicker processing times by enhancing the decarburization rates at a low carbon range of steel melt through Ar gas injection into the vacuum vessel. The RH decarburization reaction was simulated through a dissolved oxygen removal reaction by injecting nitrogen into a 1/8 scale RH water model system. The gas nozzles for the N2 injection into the vacuum vessel were located at the lowest level of the vessel`s outer wall. The nitrogen bubbling in the vacuum vessel resulted in an increase in the reaction rate constant, which rose in accordance with an increase in the bubbling flow rate and number of nozzles used. However, there was almost no variation in the reaction rate constant, which depended on the horizontal positions of the bubbling nozzles.
Key Words
metals, purification, water model
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