Investigation on Application Performances of Chrome-Free MgO-Al₂O₃-ZrO₂ Bricks for Sintering Zone in Cement Kiln

Abstract:

Four groups of specimens were made from Magnesia and alumina-zirconia synthetic materials, the content of alumina-zirconia synthetic materials was 5%, 10%, 15% and 20% respectively. While one group of reference specimen was made from magnesia and magnesia-alumina spinel at the same conditions for comparing. The Ligno-sulfite was used as binder. The raw materials were mixed homogeneously and then were molded to 5 groups of specimens. After being dried at the temperature 100°C holding 24 hours, the bricks were sintered at the temperature 1530°C 10h, and then the physical performances of the specimens were tested. Phase composition and microstructure of the specimens were also analyzed. The result shows that the performances of the MgO- Al₂O₃-ZrO₂ specimens are better than that of MgO-Al₂O₃ specimen. The specimen which contains 10% alumina-zirconia synthetic materials has the best comprehensive performance. The thermal shock resistance and erosion resistance of the MgO-Al₂O₃-ZrO₂ specimens are better than the MgO-Al₂O₃ specimen. It proves that MgO-Al₂O₃-ZrO₂ bricks are potential good material for sintering zone.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 595-600
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.595
• Online since: May 2011
• Authors: Yue Li, Yong Li, Wen Bin Xia, Wei Zhou, Shu Long Ma, Dong Wang
• Keywords: Alumina-Zirconia Synthetic Materials, Chrome Free, Magnesia-Alumina-Zirconia Brick, Sintering Zone in Cement Kiln

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