自洁净Al2O3-SiC-C质铁沟浇注料的研究与应用

对高炉出铁沟用自洁净Al_2O_3-SiC-C质浇注料的性能、显微结构进行了研究,探讨了自洁净结合剂加入量与性能的关系,认为其加入量利于提高浇注料的抗压强度,对体积密度和气孔率影响较小,使得材料更合适不同的工艺条件下使用。     

高炉出铁沟快速干燥浇注料的研究与应用

对高炉出铁沟用快速干燥浇注料的组成，性能及显微结构进行了研究，认为采用自洁净材料结合可以改善材料的高温结合性能与抗氧化性能，研制的新型浇注料成型烘烤3小时后即可投入使用，在武钢高炉使用，通铁量接近20万吨，效果显著。     

Thermal shock resistance of refractory composites with Zirconia and Silicon-Carbide inclusions and alumina binder

With the goal of designing a castable refractory for an aerospace application with optimum resistance to thermal shock, three different particle-reinforced ceramic composites are designed and compared. Different volume fractions of Silicon Carbide (SiC) particles, Zirconia (ZrO₂) bubbles, and Zirconia solid particles dispersed in an alumina (Al₂O₃) matrix are used in the fabrication of these castables. Destructive and nondestructive testing procedures are implemented to evaluate their thermomechanical properties, both before and after a custom designed thermal shock cycle. After demonstrating the applicability of thermal shock indices, the variation of these indices due to thermal shock is measured experimentally and utilized as a design tool. Multiple micro-scale damage mechanisms were observed, all of which are various forms of structural deformation.     

5 000t/d水泥熟料生产线耐火材料使用及筑炉施工

耐火材料的配置方案及其筑炉施工质量是影响熟料煅烧和熟料产、质量的关键因素之一,且对生产企业的技术经济指标具有重要影响。以建德海螺水泥有限公司2003年5月28日建成投产的一条5000t/d新型干法水泥熟料生产线为例,详述了该线回转窑、预热器和三次风管、篦冷机及窑头罩、燃烧器等部位耐火材料的配置方案、使用状况、检修经验及筑炉施工的注意点。其中,对耐火砖的品种和使用效果、配置方法的经济性作了详细对比描述。实际使用表明:窑内碱性砖区全部采用镁铁尖晶石砖是一种性能及技术经济指标优良的配置方案;另外,预分解系统配置时重点应关注耐碱性问题,篦冷机系统应配置高铝浇注料为佳。     

Si3N4对Al2O3-尖晶石-SiC-C铁沟料性能的影响

本文采用电熔刚玉、镁铝尖晶石、SiC、球状沥青和Si3N4为主要原料，借助XRD和EDAX分析技术，研究了Si3N4加入量对Al2O3-尖晶石-SiC-C质出铁沟浇注料常温物理性能和抗渣性能的影响。结果表明：随着Si3N4加入量的增加，浇注料的显气孔率变化不大，体积密度逐渐减小，1100℃及1500℃埋炭烧成后的抗折和耐压强度逐渐增大，当Si3N4加入量超过4％（质量分数，下同）时，浇注料的体积密度有所增大，抗折和耐压强度显著提高；浇注料在埋炭气氛下抗渣性能优良，氧化气氛下的侵蚀指数明显增大，且随着Si3N4加入量的增加，浇注料的侵蚀指数呈现出先增大后减小的趋势。本文对浇注料的性能变化进行了探讨。     

Role of Nanocrystalline Spinel Additive on the Properties of Low Cement Castable Refractories

Hydrated magnesium aluminate gel prepared via a cost-competent sol-gel route has been found to retain nanocrystals after optimum thermal treatment. The reactive gel-derived powder incorporated to the matrix of a high alumina based refractory castable upgraded its physical properties as revealed from the laboratory scale results. The performance of sol-gel spinel is better than coprecipitated spinel and almost comparable to presintered spinel powders popularly utilized by the refractory manufacturers. Attempts have been made to evaluate and analyze the better slag corrosion and thermal shock resistance properties of spinel-bonded castable by the nanocrystalline feature of the sol gel spinel. SEM, TEM, SAED, XRD, IR, and the physical properties of selected samples have been studied to understand the characteristics of the respective refractory materials.     

细粉总量对低水泥浇注料性能的影响

对低水泥浇注料进行了降低细粉总量的研究，结果表明：对1级矾土熟料而言，细粉总量降至21％仍能保证成型性能，其他性能也能保持较高的水平，适当地降低低水泥浇注料的细粉总量是可行的。     

热处理温度对轻质浇注料性能的影响

以超轻氧化铝质骨料为主要原料,铝酸钙水泥为结合系统,研究了不同热处理温度对轻质浇注料性能的影响。结果表明,随着热处理温度的提高,轻质浇注料的体积密度呈现先减小后增大的趋势;在经过1000℃～1500℃热处理后,线收缩率呈现先减小后增大的变化规律。轻质浇注料的抗折强度和耐压强度随着热处理温度的提高呈现先减小后增大的趋势,热膨胀系数随着热处理温度的提高呈现先减小后增大又减小的变化规律。     

钢包铝镁尖晶石浇注料的改进试验及应用

针对高铝矾土原料质量下降导致钢包铝镁浇注料使用寿命下降情况,对配方进行调整实验,结果表明：（1）适当增加了镁点,解决产品的高温收缩。（2）引入刚玉原料优化浇注料的基质组成,既降低了施工加水量,又减少了收缩,提高产品的耐高温性,使铝镁尖晶石浇注料具有优良的抗渣性和抗剥落性能。     

300t钢包罐沿浇注料的开发与应用

介绍了武钢三炼钢300t钢包罐沿浇注料的性能．研究了钢包罐沿浇注料的施工、烘烤、维护技术，总结了钢包罐沿浇注料的使用效果。