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本研究采用机械活化、化学活化和机械-化学活化三种方法活化提钒尾渣制备地聚物,考察不同活化方法对提钒尾渣地聚物性能的影响,并采用XRD、FTIR、SEM对地聚物试样进行微观表征。结果如下:最佳活化方法为机械-化学活化,最佳活化条件为:掺入8%的Ca(OH)_2并振磨1 min,制得的地聚物试样有较好的抗压性能,微观分析表明:与其它活化方式相比,最佳活化条件下制得的地聚物的矿物组成中沸石相最多,试样中Si-O-T(T=Si或Al)的不对称伸缩振动峰向低波数迁移的趋势比较明显,地聚合程度最高,而且其微观形貌主要是成片的凝胶相,孔隙较少,结构致密,具有很好的抗压性能。
In this study, three kinds of methods of mechanical activation, chemical activation and mechanical-chemical activation were used to activate the vanadium tailings to prepare geopolymers. The effects of different activation methods on the properties of vanadium tailings were investigated. XRD, FTIR and SEM Geopolymer samples were microscopically characterized. The results are as follows: The best activation method is mechanical-chemical activation. The optimum activation conditions are as follows: mixing 8% Ca (OH) _2 and grinding for 1 min, the prepared geopolymer samples have better compressive strength The microscopic analysis shows that compared with other activation methods, the geomorphic polymers prepared under the best activation conditions have the largest number of zeolite phases and the asymmetric stretching vibration peaks of Si-OT (T = Si or Al) in the sample The tendency of migrating to low wavenumbers is obvious, and the degree of geopolymerization is the highest. The microscopic morphology is mainly composed of gel phase with less pores, compact structure and good compressive property.