, Volume 53, Issue 1–2, pp 38–41 | Cite as

Characteristics and advantages of ladle vacuuming of steel using the VDF/VODF process


Traditional techniques for vacuum refining of ladle steel using the well-known VD/VOD processes are now seeing widespread use at steel smelting enterprises, but have several deficiencies alongside the advantages: The need for the steel pouring ladle to have a high freeboard; insufficient metal mixing rate; overheating and subsequent premature failure of the ladle during forced decarburization (VOD process). In order to minimize and eliminate these deficiencies, we suggest a new process (VDF/VODF) and related equipment, which has undergone industrial-scale testing. The stirring power per unit mass was shown to increase by 25–30%, with an increase of up to 15% in the mass of metal being processed, and a decrease in the amount of time required for vacuum treatment. We present various mathematical relationships that enable the increase in mixing rate to be estimated. Using a reaction chamber that also plays the role of a heat shield substantially reduces the thermal load on the upper collar of the steel pouring ladle.

Key words

ladle vacuum treatment freeboard reaction chamber steel pouring ladle stirring power 


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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  1. 1.Cherepovets State UniversityCherepovetsRussia
  2. 2.Prochnost CompanyMoscowRussia

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