辛炉用材料 《工业加热》第40卷2011年第6期 DOI：10．3969／j．issn．1002—1639．201 1．06．018 高温烧结炉用堇青石一莫来石耐火砖结合剂研究 石秋强1，白建光2，王利花1 (1．西安电炉研究所有限公司，陕西西安710061；2．西安交通大学金属强度国家重点实验室，陕西西安710049) 摘要：采用反应烧结法制备了高温烧结炉用堇青石一莫来石耐火砖，研究了不同结合剂对耐火砖组织结构和性能的影响。结果发现，与黏土结合剂在烧结过程巾有大鼍莫来石相生成相比，堇青石质结合剂在烧结过程中有大量新生相堇青石生成，热膨胀系数和抗折强度普遍较低。气孔率和热震稳定性较高，随着堇青石质结合剂含母的增加，热膨胀系数逐渐减小，气孔率和试样经1 100℃室温水冷3次后的强度保持率呈现出先增加后减少的趋势，当添加鼍质量分数达到22．5％时，强度保持率最高，为65．89％。关键词：堇青石一莫来石耐火砖；堇青石生料；黏±；热震稳定性 中图分类号：TQl75．71 文献标志码：A 文章编号：1002-1639(2011)06-0057-03 Study on Binders of Cordierite-mullite Refractory Bricks for High Temperature Sintering Furnace SHI Qiu-qian91，BAI Jian—guangz，WANG Li-hual (1．Xi’all Electric Furnace Institute Co．Ltd．，Xi’an 7 1 006 i，China； 2．StateKeyLaboratoryforMechanicalBehaviorofMaterials，Xi’all JiaotongUniversity，Xi’all 710049，Chma) Abstract：111e effects of different high temperature binders on properties and micmstructures of the cordierite—mullite refractory bricks by direct sintering method were studied．The results show that cordierite and mullite ale produced when using cordierite additives and clay as main materials respectively．The therrnaI expansions and flexuraI strengths ofcordierite—mullite refractory bricks using clay as high temperature bind ers。is higher than that，which uses the mixture of oxide as the additive，but porosities show opposite tendency，The flexural strength after 100℃-wate
