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由熔融高炉渣制备微晶玻璃 被引量:6

Preparation of glass-ceramics from molten blast furnace slag
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摘要 采用熔融法,由熔融高炉渣制备性能稳定的基础玻璃.通过对基础玻璃的差热分析确定微晶玻璃的热处理工艺制度.结合X射线衍射分析、扫描式电子显微镜观察等现代研究方法,确定了微晶玻璃热处理制度的最佳工艺参数,并研究了微晶玻璃的晶体生长方式.微晶玻璃的热处理最佳工艺参数为:核化温度850℃,保温1.5 h;晶化温度935℃,保温1 h.玻璃首先从表面开始析晶,然后逐步向内部生长.实验所得微晶玻璃的力学性能,如抗折强度、耐酸碱性和硬度,均优于天然大理石. Basic glass with stable properties was prepared from molten blast furnace slag by using the melting method. The heat treatment regime of glass-ceramics was determined by differential thermal analysis of the basic glass. Optimum heat treatment parameters were selected and the crystal growth pattern of glass-ceramics was analyzed by X-ray diffraction and scanning electron microscopy.The results show that the optimum heat treatment parameters of glass-ceramics are the nucleation temperature of 850 ℃ for 1. 5 h and the crystallization temperature of 935 ℃ for 1 h. The crystallization grows from the surface to interior gradually. The mechanical properties of the prepared glass-ceramics,such as bending strength,acid and alkali resistance,and hardness,are better than those of ordinary marble.
出处 《工程科学学报》 EI CAS CSCD 北大核心 2015年第5期633-637,共5页 Chinese Journal of Engineering
基金 河北省自然科学基金资助项目(E2014209133)
关键词 高炉渣 微晶玻璃 热处理 晶体生长 力学性能 废弃物利用 blast furnace slag glass-ceramics heat treatment crystal growth mechanical properties waste utilization
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