Hydration Performance of the Tailing Slag from V-Ti-Si-Fe Alloy-making Process Based on Ti-bearing Blast-furnace Slag
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摘要: 以攀钢含钛高炉渣提钛后的两种尾渣为原料,研究了以含钛高炉渣为主要原料制备钒钛硅铁合金后的尾渣的水化性能,利用XRD、SEM对尾渣水化前后的物相组成和显微结构进行了表征,并与市售商品铝酸盐水泥进行了对比。结果表明:提钛尾渣主要物相由CA,CA2和少量镁铝尖晶石、钙铝黄长石组成,水化强度稳定增长但低于同龄期商品铝酸盐水泥,其水化过程与后者相似。Abstract: The hydration performances of 2 types of tailing slags in Pangang,produced by V-Ti-Si-Fe alloy extraction,with Ti-bearing blast furnace slag as the main material were researched.The phase compositions and microstructures of tailing slags before and after hydration were characterized by XRD and SEM,and the comparison between the tailing slags and commercial aluminate cement was taken.The results show that both of the tailing slags A and B mainly contain CA and CA2,small amount of spinel and gehlenite,and their hydration strengths develop gradually but are lower than aluminate cement at the same period,and the hydration process of the tailing slags are similar to aluminate cement.
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Key words:
- Ti-bearing blast furnace slag /
- tailing slag /
- hydration /
- aluminate cement /
- microstructure
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