| Abstract Scope |
The shift towards hydrogen-rich combustion in industrial aluminium melting furnaces causes major challenges for traditional refractory lining concepts. This presentation examines the impact of H₂ and H₂O on refractory materials from thermodynamic, chemical and mechanical perspectives. The main degradation mechanisms, such as thermal shock, active corrosion, oxide reduction and hydrothermal reactions, are discussed, drawing on both experimental findings and theoretical modelling. The suitability of current wear linings, safety linings and insulation systems under altered process conditions, including higher flame temperatures and increased water vapour content, is evaluated. The results suggest that certain adaptations to materials are necessary, particularly with regard to chemical resistance, porosity and anchoring systems. Finally, the presentation provides guidance on material selection and design considerations to ensure long-term performance and safety in hydrogen-fuelled furnace environments. |