Research on iron & Steel Processing: Alternative routes of iron making using RHF: One of the major research interests of the author is towards selecting operating parameters based on rigorous experiments in laboratory scale RHF and process models and subsequently scale it up to pilot scale. The author has demonstrated the significant effect of the shapes of pre-fabricated iron ore coal composite pellet on the iron nugget formation at RHF. Attempts is being made to enhance the heat and mass conductance of the thicker bed by tailoring size, shape distribution of pellets, additives etc. A MoS sponsored SDF project of worth 54 lakhks has been completed and recently and MHRD-MoS-ASP sponsored UAY project (worth 741 lakhs) is ongoing on the pilot scale RHF setup at ASP, Durgapur, SAIL for processing Iron ore and coal fines of Indian origin.
Another prime area of research of the author is on reduction and control of NMI in steel. Rigorous characterization of NMI in steel, and its control by controling operating parameters in upstream processing of steel are aimed in this project, which has been formulated in collaboration between IIT Kgp-HEC-DHI as a part of CoE on advanced manufacturing at IIT Kharagpur. The author has also collaboration with Vizag steel, and WMG, UK towards inclusion control in steel.
The author is also involved seriously in Welding Research. The author has been instrumental as one of the PIs in developing an indigenous Electron Beam Welding (EBW) setup at IIT Kharagpur in collaboration with BARC & BRNS. The author has worked intensely with the research group at Pennsylvania State University, to develop an indigenous CFD code for fusion welding for steels. The author is also working with WMG, UK towards understanding evolution of welding defects during EBW.
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Three-dimensional Heat and Material Flow during Friction Stir Welding of Mild Steel by Nandan R., Linert T. J., Roy G. G., Debroy T. Acta. Materialia 55 883-895 (2007)
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Influence of burner nozzle configuration, and inlet gas composition on combustion, gas dynamics, temperature and concentration profile in a rotary hearth furnace by Saleem S., Roy G. G. Ironmaking & Steelmaking 1-13 (2020)
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Effect of beam oscillation on electron beam welding of copper with AISI-304 stainless steel by Kar J., Roy S. K., Roy G. G. Journal of Materials Processing Technology 233 174-185 (2016)
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Mathematical modeling of heat transfer, fluid flow and solidification during linear welding with a pulsed laser beam by Roy G. G., Elmer J. W., Debroy T. Journal of Applied Physics 100 1-7 (2006)
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3D imaging and quantification of porosity in electron beam welded dissimilar steel to Fe-Al alloy joints by X-ray tomography by Dinda S. K., Warnett J. M., Williams M. A., Roy G. G., Srirangam P. Materials & Design 96 224-231 (2016)
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An Improved Model of Cored Wire Injection in Steel Melts by Sanyal S., Chandra S. , Kumar S. , Roy G. G. ISIJ International 44 1157-1166 (2004)
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Efficacy and recovery of calcium during CaSi cored wire injection in steel melts by Basak S., Dhal R. K., Roy G. G. Ironmaking & Steelmaking 37 161-168 (2010)
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Effect of Amount of Carbon on the Reduction Efficiency of Iron Ore-Coal Composite Pellets in Multi-layer Bed Rotary Hearth Furnace (RHF) by Mishra S., Roy G. G. Metallurgical & Materials Transaction B 47B 2347-2356 (2016)
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Application of genetic Algorithm (GA) to estimate the rate parameters for solid state reduction of iron ore in presence of graphite by Chowdhary G. M., Roy G. G. Computational Materials Science 45 176-180 (2009)
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In situ Observation of Calcium Oxide Treatment of Inclusions in Molten Steel by Confocal Microscopy by Khurana B., Spooner S. , Rao M. , Roy G. G. Metallurgical and Materials Transactions B 48 1409-1415 (2017)
Principal Investigator
- Charge for XRD and FESEM at DHI CoE AMT Various Government and Non-Government Organisations
- Converting Electric Arc Furnace Dust (EAFD) to value added iron nugget with minimum possible carbon and energy input Science and Engineering Research Board (SERB)
- Converting Electric Arc Furnace Dust (EAFD) to value added iron nugget with minimum possible carbon and energy input Anusandhan National Research Foundation (ANRF)
- Designing a synthetic slag for inclusion control of LCAK
structural steel (DHI part) Ministry of Heavy Industries and Public Enterprises, GoI,TATA STEEL LIMITED
- Designing a synthetic slag for inclusion control of LCAK structural steel (Industry part) Ministry of Heavy Industries and Public Enterprises, GoI,TATA STEEL LIMITED
Co-Principal Investigator
- Production of rare earth permanent magnets from spent magnets and primary rare earth oxides Scheme for Promotion of Academic and Research Collaboration (SPARC), Apex Committee of SPARC, Ministry of Education
Ph. D. Students
Ashish Agrawal
Area of Research: Alternative Routes of Ironmaking
Christy Augustin
Area of Research: CFD simulation of Shaft furnace for hydrogen reduction of iron ore
Deepak Kumar Sahu
Area of Research: Waste utilization of steel plant
Raj Kumar Yadav
Area of Research: steelmaking
