摘要
以不同粒度的w(CaO)≈20%的镁钙砂为主原料制成了镁钙质中间包干式料,并研究了加入不同量氧化锆(其质量分数分别为0、1%、1.5%、2%、2.5%)对干式料性能的影响。结果表明:ZrO2的加入对于增加干式料室温、高温强度及体积致密比较有利,ZrO2提高镁钙质干式料抵抗熔渣侵蚀的能力;侵蚀后,侵蚀层中原有的Zr4+向外溶解到中间包渣中,未侵蚀层中的ZrO2和CaO形成CaZrO3,且ZrO2在MgO中也无固溶现象。综合分析认为,镁钙质干式料中氧化锆的加入量在1%～1.5%较为适当。
The magnesia-calcium tundish dry vibratable materials by using different size magnesia-calcia sand and the w （CaO）≈20% as the raw materials. Impact on the performances of magnesia-calcia tundish dry vibratable materials using ZrO2 （the content were 0%, 1%, 1.5 %, 2%, 2.5%）as added material was researched. With the increase of the content of ZrO2, the strengths at low temperature, the strengths at high-temperature and volume density of magnesia-calcia dry material. It can improve the slag resistance properties when add ZrO2 of magnesia-calcia dry material. After the corrosion of coking, the attack zone original Zr4＋ will be dissolved by scoria of tundish. In the no attack zone, the ZrO2 and CaO generate CaZrOa, and the ZrO2 not solid solubility in the MgO grain. Through comparative analysis, the more appropriate dosage of ZrO2 is 1%-1.5%.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2012年第6期22-26,共5页
Journal of Wuhan University of Technology
基金
辽宁省经委镁资源办公室(MZ002)
辽宁科技大学青年基金团队基金(2010T01)
辽宁科技大学专项基金资助项目
关键词
耐火材料
镁钙质
干式料
氧化锆
refractory
magnesia-caleia
dry material
ZrO2
