Dephosphorization by Slag Pour out in the Smelting for High Carbon 70 Steel

Abstract:

Dephosphorization is one of key goals for converter to smelt high carbon steel. The chemical equation of dephosphorization reaction and the expression of phosphors distribution between slag and steel were deduced on fundamental of metallurgical thermodynamics and the steelmaking situation of Shougang Shuicheng Iron and Steel (Group) Co. Ltd. The rerults showed that the dephosphorus capcaty of slag increases with the increase of the content of FeO in slag, but decreases with the increase of temperature. Compared with the single slag operation, the total weight of slag met the dephosphorus requirement by the double slag process for high carbon 70 steel in 100t convert can be decreased to 80%.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 462-466
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.462
• Online since: August 2013
• Authors: Yong Bei Liu*, Jin Zhu Zhang, Yong Lin Liu, Chang Yi Gao
• Keywords: Dephosphorization, Double Slag Process, High Carbon 70 Steel

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