| 耐火浇注料自损坏机理探讨 |
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| 引用本文： | 李亚伟,李楠,张忻,周宪新,张光普,张顺庆.耐火浇注料自损坏机理探讨[J].耐火材料,2001,35(1):8-10. |
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| 作者姓名： | 李亚伟 李楠 张忻 周宪新 张光普 张顺庆 |
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| 作者单位： | 1. 武汉科技大学,武汉,430081
2. 河南巩义耕生耐火材料有限公司 |
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| 摘 要： | 对实际生产中常见的耐火浇注料粉化现象进行了分析 ,认为高铝水泥浇注料的自损坏机理为高铝水泥水化产物被大气中的酸性气体 (CO2 、SO2 、H2 S)侵蚀 ,导致水化物分解 ,结合强度下降 ,引起高铝水泥耐火浇注料粉化、剥落。另外 ,随着浇注料中水分的蒸发 ,盐类物质不断向蒸发面迁移、析出 ,其中一部分含结晶水的盐类 ,进一步失去结晶水 ,伴随着体积变化 ,加剧了浇注料的损坏过程
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| 关 键 词： | 耐火浇注料 自损坏 碳酸化 硫酸化 |
| 修稿时间： | 2000年4月10日 |
Analysis of self destruction of refractory castables |
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| Li Yawei,Li Nan,Zhang Xin,et al Author's address: Wuhan University of Science & Technology,Wuhan.Analysis of self destruction of refractory castables[J].Refractories,2001,35(1):8-10. |
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| Authors: | Li Yawei Li Nan Zhang Xin Author's address: Wuhan University of Science & Technology Wuhan |
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| Affiliation: | Li Yawei,Li Nan,Zhang Xin,et al Author's address: Wuhan University of Science & Technology,Wuhan 430081 |
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| Abstract: | The self destruction of refractory castables was investigated. The results show acid gases (CO 2, SO 2, H 2S) taken out of atmosphere attack on the hydrated alumina cement CAH 10 ,C 2AH 8 and C 3AH 6 leading to the decomposition of these bonding phases and the efflorescence of this castable. On the other hand, some soluble materials transfer to the castable surface accompanying with water evaporating and further lose their structural water causing the volume change when unfired refractory castable exposes to air. This phenomenon deteriorates the self destruction of the castable. |
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| Keywords: | Refractory castable Self destruction Carbonation Sulphation |
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