首页>
外国专利>
Zirconia-mullite refractory raw material and a plate brick
Zirconia-mullite refractory raw material and a plate brick
展开▼
机译:氧化锆莫来石耐火原料和板砖
展开▼
页面导航
摘要
著录项
相似文献
摘要
Provided is a zirconia-mullite refractory raw material which is less likely to undergo alternation and microstructural degradation under high-temperature conditions, and low in thermal expansion rate, so as to have thermal shock resistance and corrosion resistance. The zirconia-mullite refractory raw material comprises crystalline zirconia and mullite as primary components, with the remainder being corundum and/or a matrix glass, wherein the crystalline zirconia includes a eutectic zirconia crystal having a grain size of 1.0 m or less, and has a maximum grain size of 30 m or less, and the matrix glass is contained in an amount of 5 mass % or less. The zirconia-mullite refractory raw material has a chemical composition comprising 30 to 55 mass % of ZrO2, 30 to 55 mass % of Al2O3 and 10 to 25 mass % of SiO2, wherein each of the chemical components falls within a primary phase region of ZrO2 in an Al2O3ZrO2SiO2 system phase diagram.
展开▼
机译:提供一种氧化锆莫来石耐火原料,其在高温条件下不易发生交替和微结构降解,并且热膨胀率低,从而具有耐热冲击性和耐腐蚀性。氧化锆莫来石耐火原料以结晶氧化锆和莫来石为主要成分,其余为刚玉和/或基体玻璃,其中结晶氧化锆包括晶粒度为1.0m以下的共晶氧化锆晶体,且最大晶粒尺寸为30m或更小,并且基质玻璃的含量为5质量%或更小。所述氧化锆莫来石耐火原料的化学组成包括30至55质量%的ZrO 2,30至55质量%的Al 2 O 3和10至25质量%的SiO 2,其中每种化学成分都落在ZrO 2的初级相区域内。在Al2O3ZrO2SiO2系统相图中。
展开▼