Metall. Res. Technol.
Volume 117, Number 6, 2020
|Number of page(s)||9|
|Published online||04 November 2020|
Investigation on the control of multiphase flow behavior in a continuous casting tundish during ladle change
School of Metallurgical Engineering, Anhui University of Technology,
Anhui, PR China
2 National Engineering and Research Center for Continuous Casting Technology, Center Iron and Steel Institute, Beijing 100081, PR China
* e-mail: firstname.lastname@example.org
Accepted: 28 September 2020
The transient multiphase flow behavior in a single-strand tundish during ladle change was studied using physical modeling. The water and silicon oil were employed to simulate the liquid steel and slag. The effect of the turbulence inhibitor on the slag entrainment and the steel exposure during ladle change were evaluated and discussed. The effect of the slag carry-over on the water-oil-air flow was also analyzed. For the original tundish, the top oil phase in the impact zone was continuously dragged into the tundish bath and opened during ladle change, forming an emulsification phenomenon. By decreasing the liquid velocities in the upper part of the impact zone, the turbulence inhibitor decreased considerably the amount of entrained slag and the steel exposure during ladle change, thereby eliminating the emulsification phenomenon. Furthermore, the use of the TI-2 effectively lowered the effect of the slag carry-over on the steel cleanliness by controlling the movement of slag droplets. The results from industrial trials indicated that the application of the TI-2 reduced considerably the number of linear inclusions caused by ladle change in hot-rolled strip coils.
Key words: tundish / ladle change / slag entrainment / steel exposure / slag carry-over / turbulence inhibitor
© EDP Sciences, 2020
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.