Kundu, Madhurima and Sinhamahapatra, Somnath (2025) A Study on the Interactions between Refractory Materials and Various Gases at High Temperatures. In: National Seminar on Ceramic and Glass Technology in the Modern Era: Challenges, Opportunities and Sustainability (CGTME-2025), 8-9 August 2025, CGCRI Kolkata. (Submitted)
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In the steel industry today, the reduction of iron ore using hydrogen has gained significant importance and become a global focus. The primary goal is to reduce CO2 emissions generated from the traditional iron ore reduction process. Hydrogen gas serves as a carbon‑neutral alternative fuel. Gaseous environment affects the performance of oxide-based refractories. The impact of gases is mainly focused on the stability of the refractory materials. As a result, there is an increasing concern about the interaction of refractories with the gases. Gases can affect refractory materials through chemical reactions, thermal stress, and corrosion, making it crucial to understand these interactions. Identifying corrosion mechanisms is essential for improving the durability and performance of refractory linings in gaseous-rich, high-temperature environments. Very few significant progress has been reported in the literature. Our study investigates the interaction of refractory materials such as alumina, magnesia, stoichiometric spinel, alumina-rich spinel, and mullite in nitrogen, mixture of hydrogen and argon atmospheres, 100% Hydrogen over a 24-hour period with controlled gas flow rates. The fired refractory bar samples were characterized in terms of apparent porosity, bulk density, thermomechanical properties including the modulus of elasticity and modulus of rupture, were measured both before and after exposure to the gas atmosphere to assess the change in properties in the refractory materials. XRD analysis were performed to confirm the formation of new phases for the interaction of gases.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Uncontrolled Keywords: | Thermomechanical, Thermal Stress, Refractory, Refractory oxide-gas interaction |
| Subjects: | Refractories |
| Divisions: | Refractory |
| Depositing User: | Ms Upasana Sahu |
| Date Deposited: | 12 May 2026 17:02 |
| Last Modified: | 12 May 2026 17:02 |
| URI: | https://cgcri.csircentral.net/id/eprint/5808 |
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