Reducción de óxidos de cromo contenidos en las escorias

J. Gutiérrez-Paredes; A. Romero-Serrano; M. A. Hernández; F. Chávez-Alcalá; B. Zeifert

doi:10.3989/revmetalm.2005.v41.iExtra.1073

Reduction of chromium oxide from slags

Authors

J. Gutiérrez-Paredes Dept. of Metallurgical Eng., IPN-ESIQIE
A. Romero-Serrano Dept. of Metallurgical Eng., IPN-ESIQIE
M. A. Hernández Dept. of Metallurgical Eng., IPN-ESIQIE
F. Chávez-Alcalá Dept. of Metallurgical Eng., IPN-ESIQIE
B. Zeifert Dept. of Metallurgical Eng., IPN-ESIQIE

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1073

Keywords:

Chromium, Slags, Stainless steel, Reduction

Abstract

Experimental and theoretical work were performed to estimate the effect of slag basicity and amount of reducing agents on the reduction of chromium oxide from the slag which interacted with molten steel at 1,600 °C. The slag system contained CaO, MgO, SiO₂, CaF₂ and Cr₂O₃ together with Fe-alloys (Fe-Si and Fe-Si-Mg). The CaF₂ and MgO contents in the slags were 10 mass % each; Cr₂O₃ was 25%. The amount of the ferroalloys ranged from 12.5 to 50 g per 100 g of slag. The (CaO+MgO)/SiO₂ ratio was held at 1 and 2. The Cr yield was determined using both Fe-alloys as reducing agents. Some estimations were made to determine the theoretical effect of temperature, slag basicity, (CaO+MgO)/SiO₂, and amount of reducing agents in the slag on the chromium recovery. The FACT (Facility for the Analysis of Chemical Thermodynamics) computational package is used to determine the equilibrium between the slag and molten steel.

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Published

2005-12-17

How to Cite

Gutiérrez-Paredes, J., Romero-Serrano, A., Hernández, M. A., Chávez-Alcalá, F., & Zeifert, B. (2005). Reduction of chromium oxide from slags. Revista De Metalurgia, 41(Extra), 443–446. https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1073

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Issue

Vol. 41 No. Extra (2005)

Section

Articles

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