Research Progress on Solidification of Tailings by Alkali-activated Geopolymerization
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摘要:
随着尾矿堆存量的不断增加，尾矿对人类安全、土壤及环境的危害也愈来愈严重，尾矿亟待处理。根据我国综合利用尾矿的现状，提出以碱激发地质聚合反应固化处理尾矿，着重介绍并论证了碱激发地质聚合反应固化尾矿的可行性，比较了碱激发反应和地质聚合反应在地质聚合反应理论的研究中的区别，指出地质聚合反应并不是碱激发反应的子集。同时，总结了表征碱激发地质聚合产物微观结构的技术，并展望了碱激发地质聚合反应固化尾矿的发展前景。
Abstract:With the continuous increase of tailings pile, tailings are becoming more and more harmful to human safety, soil and environment, so it is urgent to deal with tailings. Based on the present situation of comprehensive utilization of tailings in China, the paper proposed to deal with the tailings by alkali-activated geopolymerization. The feasibility of the solidification of tailings through alkali-excited geopolymerization was presented emphatically. Compared with the differences between alkaline-activated reaction and geopolymerization, the paper pointed out geopolymerization was not the subset of alkaline-activated reaction. Meanwhile, the techniques for characterizing the microstructure of alkali-activated geopolymer were summarized, and the development prospect of alkaline-activated geopolymerization was forecasted.
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Key words:
- tailings /
- alkaline-activated reaction /
- geopolymerization /
- nuclear magnetic resonance /
- microstructure
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表 1 国外地质聚合物理论发展中的重要工作总结
Table 1. Summary of important work in the development of foreign geopolymer theory
作者 年份 描述 意义 Davidovits 1982 为一种新铝硅酸盐材料取得技术名称 为地质聚合物命名 Davidovits和Orlinski[10] 1988 “软矿物学”欧洲会议-第一本关于地质聚合物的论文集 总结了此前关于地质聚合物的工作 Wastiels等[13] 1993 通过碱激发粉煤灰制备地质聚合物 粉煤灰体系的地质聚合物 Rahier等[14-16] 1996
1997对偏高岭土体系的地聚合物进行了广泛和深入的基础研究 奠定偏高岭土体系地质聚合物理论基础 Xu和vanDeventer[17-18] 2000
2002研究了多种矿物的地质聚合反应 扩展了地质聚合物的原材料 Duxson等[19] 2007 综述论文“Geopolymer technology: the current state of the art” 全面总结了地质聚合物的发展 Davidovits[20] 2008 专著“Geopolymer chemistry & applications 2nd edition” Provis和Van Deventer[21] 2009 专著“Geopolymers: structure, processing, properties and industrial applications” Davidovits等[22] 2019 地质聚合物在南美古建筑上的应用 解释古建筑材料的形成原因 
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