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Hydrogen-Based Direct Reduction of Iron Ore Pellets: Microstructural Evolution and Kinetic Studies
					
 Nov 22, 2024 
 2:30PM to 3:30PM

									

				

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							BIMR Seminar Leili Tafaghodi - All the details in the picture are available in text on the event page							

															

						

						

	

		
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	Date/Time

	Date(s) - 22/11/2024
2:30 pm - 3:30 pm





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Prof. Leili Tafaghodi


Dept. of Materials Science and Engineering, McMaster University


 


Producing iron from its natural oxide minerals is an established industrial process. With the current ironmaking technologies, CO2 emissions almost exclusively result from the use of carbon-bearing material in the form of coal, coke or natural gas for both the energy generation and the chemical reduction. As one of the biggest industrial CO2 emitters, iron and steel industry is responsible for approximately 30% of the industrial CO2 emissions. This value is equivalent to 7.2% of the global CO2 emissions from all sectors. Fossil-free ironmaking is crucial in mitigating CO2 emissions from the iron and steel industry. Among the various solutions being explored, hydrogen-based direct reduction stands out as one of the most promising approaches for sustainable ironmaking, offering significant potential for near-term implementation. The ongoing research in my group examines the reduction behavior of industrial Hematite pellets. The investigation involved using a custom-built thermogravimetric setup, which allowed for precise weight loss measurements and flexible gas flow rates during the reduction. The isothermal reduction experiments were conducted under pure hydrogen. The surface morphology, microstructure, and chemical composition were investigated for an intermediate state and near-complete reduction. The results revealed differences in the morphology of reduction products and metallization along the pellet radius. This research aims to examine the fundamental kinetics of the reduction process with H2 and to understand the reduction and swelling behaviour of the pellets to gain detailed process know-how about the behavior of the ore in hydrogen-based DR process.


 


Bio


Dr. Tafaghodi is an associate professor at McMaster university in Hamilton, Ontario, Canada. She obtained her PhD from the University of Toronto where she worked on thermodynamics of silicon refining. Prior to joining McMaster, she was an Assistant Professor and the Extractive Metallurgy Industry Chair at the University of British Columbia. She is currently a member of McMaster’s Steel Research Centre, a hub fostering collaborative innovation in the steel industry. Her research explores sustainable metal production methods that maximize resource utilization and reduce waste generation and energy consumption. Dr. Tafaghodi’s research interests span the areas of process metallurgy, thermodynamics and kinetics of high temperature materials production, and reutilization and recycling of waste materials in metals and minerals industries.


 


In-Person: ABB 102


Online: https://mcmaster.zoom.us/j/94756370208


Meeting ID: 947 5637 0208

Passcode: 747585