Effect of Molar Ratio of MgO/Al2O3 on the Performance of MgO-Al2O3-Fe2O3 Composite

Yan Qing Cai; Zhi Fa Wang; Li Xue Yu; Jing Long Bu; Rong Lin Wang; Rui Sheng Wang

doi:10.4028/www.scientific.net/AMR.284-286.242

Paper Titles

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Synthesis and Characterization of Tri-N-Octylamine-Intercalated α-Zirconium Phosphate
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Study on Removal Arsenic from Iron Ore with Arsenic in Sintering Process
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Effect of Molar Ratio of MgO/Al₂O₃ on the Performance of MgO-Al₂O₃-Fe₂O₃ Composite
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Preparation and Isothermal Crystallization Behavior of Poly(lactic acid)/Graphene Nanocomposites
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Properties of PANI-PVA Composite Film
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Micro-Structure and Rheological Properties of HIPS Matrix Composites Filled with Magnesium Hydroxide Whisker Modified with Styrene via In Situ Polymerization
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Neural Network Based On the Improved Genetic Algorithm to Optimize Component Separation Conditions of Small Peptide
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 284-286Effect of Molar Ratio of MgO/Al2O3 on the...

Effect of Molar Ratio of MgO/Al₂O₃ on the Performance of MgO-Al₂O₃-Fe₂O₃ Composite

Abstract:

The MgO-Al₂O₃-Fe₂O₃ composite was prepared at 1600°C for 3h with magnesia powder and alumina powder as raw materials and with ferric oxide powder as additive. The effect of the molar ratio of MgO/Al₂O₃ on the sintering and thermal shock resistance of the composite materials was studied. The results showed that increasing the molar ratio of MgO/Al₂O₃ could improve the densification of the Al₂O₃-Fe₂O₃ composites, with the molar ratio of MgO/Al₂O₃ increased from 3 to 5, densification of the composites didn't increased but decreased. The optimum molar ratio of MgO/Al₂O₃ of the Al₂O₃-Fe₂O₃ composite is equal to 3, the sample MA-3 exhibits better sintering densification and thermal shock resistance. Its primary crystal phases are spinel and periclase, and less amount of sosoloid 20MgO·19Al₂O₃·Fe₂O_3. So, the MgO-Al₂O₃-Fe₂O₃ composite is acceptable for application in cement rotary kiln linings and high temperature gas filter support.