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.
Sen HE Junyao LUO Sen ZHENG Jing HUANG Xintao ZHOU Jupei XIA Zhongqiu LUO?
. Immobilization of Microfine Grained Iron Ore Tailings Using Phosphorous Slag Based Geopolymer Materials[J]. The Chinese Journal of Process Engineering, 2017
, 17(4)
: 785
-790
.
DOI: 10.12034/j.issn.1009-606X.216361
[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.
