用磷渣基地聚合物胶凝材料对65%的微细粒铁尾矿浆体进行固化处理，考察了胶凝材料掺量对尾矿固化体各项力学性能的影响，分析了尾矿固化体的微观结构. 结果表明，尾矿固化体的力学性能受胶凝材料掺量影响显著，固化28 d后尾矿固化体的抗压强度在胶凝材料掺量为3%(?)时达0.2 MPa，掺量为14%(?)时大于3.0 MPa；不同胶凝材料掺量的尾矿固化体渗透系数均小于1?10?4 cm/s. 胶凝材料水化产生的水化凝胶可将尾矿中的各组分胶结在一起形成具有一定承载力和水稳性的硬化体，磷渣基地聚合物胶凝材料可作为尾矿固化的一种潜在固结剂.
A concentration of 65% microfine grained iron ore tailings was immobilized with phosphorous slag based geopolymer materials. The effect of phosphorous slag based geopolymer materials content on the mechanical property of the immobilized sample was determined. Moreover, the microstructure of immobilized sample was analyzed. The results showed that phosphorous slag based geopolymer material played a significant role in the mechanical properties of the immobilized samples. The compressive strength of the sample immobilization for 28 d was 0.2 MPa when addition of geopolymer material 3%(?) and over 3.0 MPa when addition of geopolymer material 14%(?). The permeability coefficient of immobilized samples with various geopolymer material contents was less than 1?10?4 cm/s. The hydration products gel of phosphorous slag based geopolymer materials can consolidate with ore tailings components to become a certain bearing capacity and water stabilization whole. The phosphorous slag based geopolymer materials may be considered as a potential material to immobilize microfine grained iron ore tailings.
[1]吴宗之, 梅国栋.尾矿库事故统计分析及溃坝成因研究[J].中国安全科学学报, 2014, 24(9):70-76
[2]郭敏, 赵恒勤, 赵军伟, 张亮.矿山尾矿资源综合利用标准需求分析[J].矿产保护与利用, 2015, (5):46-50
[3]刘佳欣.浅谈我国尾矿资源利用的发展和建议[J].中国粉体工业, 2014, (3):1-3
[4]唐宇, 吴强, 陈甲斌, 张华.提高我国尾矿资源综合利用效率的思考[J].金属材料与冶金工程, 2012, 40(3):59-64
[5]段蔚平, 郭金峰, 汪斌.我国金属矿山尾矿堆存技术及发展方向[J].金属矿山, 2013, 42(12):118-122
[6]印万忠.尾矿堆存技术的最新进展[J].金属矿山, 2016, (7):10-19
[7]吴鹏, 胡建军, 郭利杰, 郑磊.尾矿干式堆存技术发展现状与方向[J].中国矿业, 2014, (A1):203-206
[8]Cacciuttolo C, Barrera S, Caldwell J, Vargas W.Filtered dry stacked tailings: developments and new trends[C]. Proceedings of the 2nd International Seminar on Tailings Management, 2014.
[9]范静斐, 张召述, 夏举佩.矿渣制备低温陶瓷复合材料的研究[J].硅酸盐通报, 2010, 29(6):1323-1328
[10]朱丽苹, 张召述, 夏举佩.化学添加剂对磷渣活性的激发效果研究[J].粉煤灰, 2009, (6):11-14
[11]施惠生, 夏明, 郭晓潞.粉煤灰基地聚合物反应机理及各组分作用的研究进展[J].硅酸盐学报, 2013, 41(7):972-980
[12]张文生, 叶家元, 王渊, 等.低碱高强硅铝聚合材料的研究[J].中国材料进展, 2010, 29(9):13-18
[13]Barbosa V F F, MacKenzie K J D, Thaumaturgo C.Synthesis and characterisation of materials based on inorganic polymers of alumina and silica: sodium polysialate polymers[J].International Journal of Inorganic Materials, 2000, 2(4):309-317
[14]简家成, 刘峥, 杨宏斌, 刘丽荣, 虞爱平.地聚物胶凝材料制备及应用研究现状[J].矿产综合利用, 2014, (3):18-24
[15]Van Deventer J S J, Xu H.Geopolymerization of aluminosilicates: Relevance to the minerals industry[J].Aus IMM Bulletin, 2002, 1:20-27
[16]Silva F J, Thaumaturgo C.Fibre reinforcement and fracture response in geopolymeric mortars[J].Fatigue & Fracture of Engineering Materials & Structures, 2003, 26(2):167-172
[17]Lecomte I, Liégeois M, Rulmont A, et al.Synthesis and characterization of new inorganic polymeric composites based on kaolin or white clay and on ground-granulated blast furnace slag[J].Journal of materials research, 2003, 18(11):2571-2579
[18]Davidovits J.Geopolymer chemistry and properties[C]. Geopolymer, 1988, 88(1): 25-48.
