Lime Addition before Vacuum Carbon Deoxidation in Stainless Steel Manufacturing

P R Sureshkumar, D R Pawar

Abstract: This paper is regarding Stainless Steel manufacturing. The Previous process of Stainless Steel dealt with lime addition "AFTER" Vacuum Carbon Deoxidation whereas the Modified process deals with lime addition "BEFORE" Vacuum Carbon Deoxidation. The Modified process has an impact on Temperature drop, Oxygen consumed for blowing, Carbon drop, S drop, Refractory consumption, Electricity consumption and Electrode consumption. The whole process deals with the melting process at Ultra High Power Electric Arc Furnace, Oxygen blowing at Vacuum Oxygen Decarburization, Vacuum Carbon Deoxidation and Reduction. Further the liquid metal is cast into blooms in a bloom caster.

Keywords: Scrap, Ladle, Furnace, VOD, VCD, Reduction, Tundish, AMLC, Stopper rod, EMS, Bloom, Nozzle, purging, porous plug, slide gate