Influence of Fe2O3 on the Hydration Resistance of MgO-Al-C Bricks

Jun Cong Wei; Su Juan Yuan; Xiu Mei Ji; Li Xue Yu; Jun Bo Tu

doi:10.4028/www.scientific.net/AMR.690-693.658

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 690-693Influence of Fe2O3 on the Hydration Resistance of...

Influence of Fe₂O₃ on the Hydration Resistance of MgO-Al-C Bricks

Abstract:

In order to improve the hydration resistance of MgO-Al-C bricks, Fe₂O₃ was chosen as an additive according to thermodynamic calculations. MgO-Al-C refractories were prepared by using Si, Fe₂O₃ or both as additives. The effects of additives on the hydration resistance of specimens were investigated. XRD was conducted to determine the phase composition. The results showed that the hydration resistance of MgO-Al-C bricks would be slightly bettered with addition of only Si. However, it was helpful when Fe₂O₃was added along with Si. The mechanism is that Fe₂O₃ could decompose to give off oxygen during heating, which could promote the oxidation of Al powder and inhibit the formation of Al₄C₃ and AlN.

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Periodical:

Advanced Materials Research (Volumes 690-693)

Pages:

658-661

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.690-693.658

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Online since:

May 2013

Authors:

Jun Cong Wei, Su Juan Yuan, Xiu Mei Ji, Li Xue Yu, Jun Bo Tu

Keywords:

Fe₂O₃, Hydration Resistance, Mgo-Al-C Brick

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