文章摘要
不同耐火原料抗K2CO3侵蚀性能分析
Study on corrosion resistance of different refractory raw materials against K2CO3
投稿时间:2017-02-23  
DOI:
中文关键词: 六铝酸钙  镁铝尖晶石  刚玉  镁铬砂  K2CO3  抗侵蚀性能
英文关键词: calcium hexaluminate  magnesia-alumina spinel  tabular corundum  magnesia-chrome sand  K2CO3  corrosion resistance
基金项目:国家自然科学基金资助项目(51474165).
作者单位E-mail
余亚兰 武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉, 430081 15727009821@163.com 
顾华志 武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉, 430081  
张美杰 武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉, 430081  
毛燕东 新奥科技发展有限公司集团煤基低碳能源国家重点实验室,河北 廊坊, 065001  
邵志君 宜兴市炉顶密封工程有限公司,江苏 宜兴, 214225  
黄奥 武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉, 430081  
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中文摘要:
      以六铝酸钙、镁铝尖晶石、板状刚玉及镁铬砂为耐火原料,在750 ℃×3 h条件下分别对其进行抗K2CO3侵蚀试验,分析其抗K2CO3侵蚀性能。结果表明,经过K2CO3侵蚀后,六铝酸钙、镁铝尖晶石均能保持原料内部原有的形貌,侵蚀程度较小,其中六铝酸钙原料几乎无侵蚀,所引起的体积膨胀较小;而板状刚玉、镁铬砂与K2CO3反应后分别生成低密度化合物K6Al2O6和K2CrO4,反应程度大,所引起的体积膨胀较大;六铝酸钙、镁铝尖晶石抗K2CO3侵蚀性能优于板状刚玉、镁铬砂。
英文摘要:
      With calcium hexaluminate, magnesia-alumina spinel, tabular corundum and magnesia-chrome sand as refractory raw materials, the corrosion resistance of these materials against K2CO3 were studied under the condition of temperature at 750 ℃ and for 3 h. The results show that, after the corrosion by K2CO3, both calcium hexaluminate and magnesia-alumina spinel can keep original internal morphology and have low corrosion degree. Calcium hexaluminate has nearly no corrosion and little volume expansion. But for tabular corundum and magnesia-chrome sand, after reacting with K2CO3, low density compounds of K6Al2O6 and K2CrO4 are generated respectively. It shows an obvious extension of reaction, resulting in a relative large volume expansion. The corrosion resistance performance of calcium hexaluminate and magnesia-alumina spinel against K2CO3 are better than that of tabular corundum and magnesia-chrome sand.
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