ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Mechanism of Decarburization in RH Degasser
Masamitsu TakahashiHiroshi MatsumotoTadashi Saito
Author information
JOURNALS FREE ACCESS

1995 Volume 35 Issue 12 Pages 1452-1458

Details
Abstract

Decarburization behavior in RH-Degasser was discussed on the basis of a comparison between simulation and operational result. In the simulation, decarburizations through Ar bubbles, CO bubbles and a free surface were considered. Furthermore, the difference in carbon concentration between the melt in the ladle and that in the vacuum vessel was also considered. As a result of the comparison, it was found that the contribution of the decarburization as CO bubbles to the total amount of decarburization is great. In order to step up the decarburization rate, increasing the circulation flow rate is effective. That is accomplished by reducing the atmospheric pressure in the vacuum vessel, injecting Ar at a deeper position, and increasing the Ar gas flow rate and the snorkel diameter. Increasing oxygen concentration is expected to be effective to promote decarburization.

Information related to the author
© The Iron and Steel Institute of Japan
Previous article Next article
feedback
Top