Abstract
An approach for reducing input carbon rate of a blast furnace using carbon-direct reduction (C-DRR) diagram has been developed. The role of shaft efficiency, blast input conditions, and heat loss rate in reducing the carbon rate has been brought out. A two-zone thermochemical model has been used to develop C-DRR diagrams for analyzing operating data of a furnace as well as predicting conditions for reducing its carbon rate. The model can be integrated with the control system of a blast furnace for driving an operating furnace to reduce carbon rates.
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The authors acknowledge the computational assistance provided by Rajeev Kumar, a graduate student at the Indian Institute of Technology, Kharagpur in the preparation of the final manuscript.
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Manuscript submitted July 6, 2012.
Appendices
Appendix I.A: Raw Material Analysis
Appendix I.B: Hot Metal analysis
Appendix I.C: Coal composition
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Paul, S., Roy, S.K. & Sen, P.K. Approach for Minimizing Operating Blast Furnace Carbon Rate Using Carbon-Direct Reduction (C-DRR) Diagram. Metall Mater Trans B 44, 20–27 (2013). https://doi.org/10.1007/s11663-012-9776-6
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DOI: https://doi.org/10.1007/s11663-012-9776-6