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为了提高转炉钢渣质陶瓷地砖的性能,对其最佳配方进行了研究。利用转炉钢渣和滑石等常用建筑陶瓷原料,在没有特殊添加剂的情况下,经过模压成型制备了陶瓷地砖。通过X射线衍射和高倍电镜分析,研究了原料成分对转炉钢渣质陶瓷地砖结晶过程中的影响规律。结果表明,压制成的坯体最佳烧结温度为1220℃。转炉钢渣、滑石和高岭土在用量分别为45%、42%和13%时,原料中的CaO/MgO质量比在1.4附近,转炉钢渣质陶瓷的性能最佳。当转炉钢渣占陶瓷原料30%~70%时,钢渣中Fe2O3和Cr2O3可起到促进转炉钢渣陶瓷晶化成核时形成透辉石相和降低烧成温度的作用。本工作为转炉钢渣大规模资源化及综合利用奠定基础。
In order to improve the performance of converter steel slag ceramic tiles, the best formula was studied. The use of converter steel slag and talc and other common building ceramics raw materials, in the absence of special additives, prepared by the molding ceramic tiles. Through X-ray diffraction and high power electron microscope analysis, the influence of raw material composition on the crystallization process of converter slag ceramic floor tiles was studied. The results show that the optimum sintering temperature of the pressed green body is 1220 ℃. When the content of converter slag, talc and kaolin were 45%, 42% and 13% respectively, the mass ratio of CaO / MgO in the raw material was around 1.4, and the performance of converter slag-based ceramics was the best. When the converter steel slag accounts for 30% ~ 70% of the ceramic raw material, Fe2O3 and Cr2O3 in the steel slag can play a role of promoting the formation of diopside and reducing the firing temperature when the converter slag is nucleated. This work laid the foundation for the large-scale resource utilization and comprehensive utilization of converter slag.