论文部分内容阅读
以液态钢渣为原料直接制备微晶玻璃,可充分利用渣中的物质和热量,避免传统钢渣处理过程中产生的环境污染和热量耗散。先将40%的电炉水淬钢渣和60%的辅料(硅石粉、刚玉粉和氧化钠等)粉末同时在1 450℃下分别熔融成液态,然后将液态钢渣倒入熔融的辅料液体中混合并保温1 h,得到的玻璃熔体经过浇注、退火、热处理过程制得微晶玻璃样品。利用XRD、SEM对微晶玻璃试样的微观结构进行表征,采用标准方法进行性能测试。结果表明:经700℃核化2 h,870℃晶化1 h后微晶玻璃的理化性能较好。主晶相为透辉石[(Mg6Al2Fe2)Ca(Si1.5Al5)O2]和普通辉石[Ca(Mg,Al,Fe)Si2O6],晶体形貌为颗粒状,直径为0.05~0.1μm,分布均匀。研究对开发热态钢渣资源化利用具有重要意义,提供了一种新途径。
The direct preparation of glass-ceramics by using liquid steel slag as raw material can fully utilize the substance and heat in the slag and avoid environmental pollution and heat dissipation during the traditional steel slag treatment. First 40% of the electric furnace water quenched steel slag and 60% of the auxiliary materials (silica, alumina and sodium oxide, etc.) powder while melting at 1,450 ℃, respectively, into a liquid state, and then liquid steel slag poured into molten auxiliary liquid mixture Insulation 1 h, the resulting glass melt after pouring, annealing, heat treatment process to obtain a glass-ceramic sample. The microstructure of the glass-ceramic samples was characterized by XRD and SEM. The performance of the samples was tested by standard methods. The results show that the physical and chemical properties of glass-ceramics are better after nucleation at 700 ℃ for 2 h and crystallization at 870 ℃ for 1 h. The main crystal phase is diopside [(Mg6Al2Fe2) Ca (Si1.5Al5) O2] and orthopyroxene [Ca (Mg, Al, Fe) Si2O6] Evenly. Research on the development of hot steel slag resource utilization is of great significance, provides a new way.