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Investigation of the Effect of Adding Zirconia (ZrO2) on the Corrosion Resistance of the Casting Mass of the EBT Duct of the Electric Arc Furnace at Rohina South Steel Company
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Hossein Taman   , Mahboobe Vaseghi * , Mehdi Ghobeiti Hasab |
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Abstract: (45 Views) |
In this study, the effect of zirconia (ZrO₂) addition and particle size distribution on the microstructural characteristics and corrosion resistance of magnesia-based refractory castables was investigated. Experimental samples with different zirconia contents were prepared and tested using a simulated crucible setup at 1650 °C under an air atmosphere. The microstructure and corroded regions were analyzed using scanning electron microscopy (SEM) to evaluate variations in porosity, grain size, and phase formation. The results revealed that the addition of zirconia reduced the average particle size to approximately 36 nm, improved structural uniformity, and decreased apparent porosity. These improvements, combined with the high melting point of zirconia, significantly enhanced the corrosion resistance and structural stability in the nozzle region. Overall, the presence of an optimal zirconia content can markedly improve the performance of magnesia refractories under high-temperature conditions. |
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| Keywords: Magnesite refractory mass, zirconia, electric arc furnace equipped with EBT, particle size, corrosion resistance |
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Full-Text [PDF 1636 kb]
(22 Downloads)
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Type of Study: Research |
Subject:
سایر (برق، عمران، معماری، هیدرولیک، ماشین آلات کشاورزی، ساخت و تولید، متالوژی، ریاضی، فیزیک، شیمی و ...)
Received: 2025/08/2 | Accepted: 2025/10/12 | Published: 2025/10/28
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