Affiliation:
1. Royal Institute of Technology (KTH), Stockholm, Sweden
2. University of Science and Technology, Beijing, China
Abstract
Direct chromium alloying by chromite ore in EAF operation is a promising
process in stainless steel production, which has the advantage of
resource-saving, energy-saving, and environment-friendly. In the present
investigation, iron, carbon, and chromite ore mixture (Fe+C+FeCr2O4) were
chosen as the precursor for direct chromium alloying. Thermogravimetric
Analysis (TGA) experiments were carried out to investigate the effect of iron
content on the reduction kinetics, and the results show that the presence of
metallic iron in the precursor will increase the reduction rate of chromite.
Up-scaling experiments (100 g and 500 g scale) have been carried out in the
induction furnace to further test the effectiveness of using industrial
chromite ore for direct chromium alloying. The induction furnace tests
confirmed the necessity of adjusting composition of the slags to ensure high
yield of chromium in the final products; and chromium yield can reach 90%.
Publisher
National Library of Serbia
Subject
Materials Chemistry,Metals and Alloys,Mechanics of Materials,Geotechnical Engineering and Engineering Geology
Cited by
17 articles.
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