Effects of Atmosphere on the Periclase-Hercynite Brick

Abstract:

The periclase-hercynite brick performance after different re-firing cycles was researched under different atmosphere. The results are shown that under the oxidizing atmosphere, the brick after re-firing would lead to the mutual diffusion of iron ions in both magnesium substrate and hercynite particles, which would further lead to ring cracks around hercynite. After the brick was re-firing at CO atmosphere, the mutual diffusion of magnesium and iron ions was even more severe, which formed magnitude of magnesia-hercynites and magnalium spinels. SEM results are shown that the porous structure around the hercynite could damage more severe.

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 1523-1528
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.1523
• Online since: February 2012
• Authors: Meng Liu, Yong Li, Shu Long Ma, Wen Bin Xia, Yan Jing Li
• Keywords: Attack Mechanism, Cement-Rotary Kiln, Periclase-Hercynite Brick

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