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Dolime-Based EAF Hot Repair Material -- Successful Product Improvements

Dead-burnt dolime impregnated with iron oxide is an established and proven solution for EAF refractory hot repair for decades. The corrosion mechanisms in comparison to other refractory repair are different, but with similar effect. With an optimized particle size distribution, densification and resistance to slag corrosion are increased. Sizing improvements bring the advantages: minimizing porosity, maximizing contact for enhanced bonding and imparting flow characteristics. The results received via pyrometric cone equivalent tests, thermodynamic calculations and slag corrosion tests are presented. By optimizing the particle size distribution, it was possible to improve the corrosion resistance for a higher performance of a commercial dolime-based fettling material from Dolofrit® product range.
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2021 AISTech Conference Proceedings
PR-382-157
F. Firsbach, G. Bruel, I. Houldsworth, J. Guest, S. Chunlamani
June 01, 2021
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