Zhao Jingming, Kim Taesuk, Kim Gichul, Hwang Kyuhong, Bae Dongsik
Engineering Research Institute, i-Cube Center, Gyeongsang National University, Jinju, 660-701, South Korea.
Nanoscale Res Lett. 2012 Jan 5;7(1):8. doi: 10.1186/1556-276X-7-8.
The quality of the refractories applied on integrated gasification combined cycle should be a key factor that affects both the reliability and the economics of gasifier operation. To enhance the workability of chromia/alumina castables, three types of ultrafine alumina powder were added to improve the workability. Densification behavior of such castables in the presence of ultrafine alumina was assessed through the measurement of parameters like flow value, viscosity, bulk density, apparent porosity, and microstructure evaluation by an SEM study. It's proved that the specific surface area and particle size distribution of ultrafine powders in matrix parts greatly influence the densification behavior of these castables.
应用于整体煤气化联合循环的耐火材料质量应是影响气化炉运行可靠性和经济性的关键因素。为提高氧化铬/氧化铝浇注料的施工性能，添加了三种类型的超细氧化铝粉以改善其施工性能。通过测量流动值、粘度、体积密度、显气孔率等参数以及利用扫描电子显微镜研究进行微观结构评估，来评定此类浇注料在超细氧化铝存在下的致密化行为。结果表明，基体部分超细粉的比表面积和粒度分布对这些浇注料致密化行为有很大影响。
