赤泥是从铝土矿中提取氧化铝后产生的碱性废渣.拜耳法赤泥经活化、解聚溶出、二次聚合等处理,可以制备高性能无机地聚物材料,这为赤泥综合利用难题的解决提供了新的技术思路.本文对赤泥地聚物的合成技术研究现状进行了分析论述.通过对赤泥中主要成分硅渣的结构分析,认为由于生产条件的影响,硅渣不具有聚合物的性能特征,直接使用拜耳法赤泥制备地聚物材料难以获得较高的性能.通过活化处理,易于实现硅渣中铝硅基团的溶出,为二次聚合提供条件.本文认为,赤泥基地聚物材料具有广阔的应用前景,应进一步加强对拜耳法赤泥硅渣活化等理论问题的研究,并探讨地聚物合成过程的强度形成机理.
参考文献
| [1] | Wanchao Liu;Jiakuan Yang;Bo Xiao.Review on treatment and utilization of bauxite residues in China[J].International Journal of Mineral Processing,20093/4(3/4):220-231. |
| [2] | 安金鹏;卢忠远;严云.粉煤灰基地聚物水泥固化重金属和放射性废物研究现状及发展趋势[J].原子能科学技术,2008(12):1086-1091. |
| [3] | Ebrahim Najafi Karri;Ali Allahverdi;John L Provis.Efflorescence control in geopolymer binders based on natural pozzolan[J].Cement & concrete composites,20121(1):25-33. |
| [4] | Benjamin C. McLellan;Ross P. Williams;Janine Lay;Arie van Riessen;Glen D. Corder.Costs and carbon emissions for geopolymer pastes in comparison to ordinary Portland cement[J].Journal of cleaner production,20119/10(9/10):1080-1090. |
| [5] | E. Alvarez-Ayuso;X. Querol;F. Plana;A. Alastuey;N. Moreno;M. Izquierdo;O. Font;T. Moreno;S. Diez;E. Vazquez;M. Barra.Environmental, physical and structural characterisation of geopolymer matrixes synthesised from coal (co-)combustion fly ashes[J].Journal of hazardous materials,20081/3(1/3):175-183. |
| [6] | Pan Zhihua;Li Dongxu;Yu Jian.Properties and microstructure of the hardened alkali-activated red mud-slag cementitious material[J].Cement and Concrete Research,20039(9):1437-1441. |
| [7] | 李文娟;龚猛;黄朝晖;房明浩;刘艳改.赤泥/粉煤灰免烧矿物聚合物材料的制备和强度[J].硅酸盐通报,2010(1):38-42. |
| [8] | Jian He;Jianhong Zhang;Yuzhen Yu;Guoping Zhang.The strength and microstructure of two geopolymers derived from metakaolin and red mud-fly ash admixture: A comparative study[J].Construction and Building Materials,2012:80-91. |
| [9] | 孙旺;郑诗礼;张亦飞;徐红彬;张懿.NaOH亚熔盐法处理拜尔法赤泥的铝硅行为[J].过程工程学报,2008(6):1148-1152. |
| [10] | 陶敏龙;张召述;卓瑞锋.利用赤泥制备CBC复合材料的研究[J].有色金属（冶炼部分）,2009(4):45-48. |
| [11] | Swanepoel JC.;Strydom CA..Utilisation of fly ash in a geopolymeric material[J].Applied Geochemistry: Journal of the International Association of Geochemistry and Cosmochemistry,20028(8):1143-1148. |
| [12] | J.G.S.van Jaarsveld;J.S.J.van Deventer;G.C.Lukey.The effect of composition and temperature on the properties of fly ash-and kaolinite-based geopolymers[J].Chemical Engineering Journal,20021/3(1/3):63-73. |
| [13] | Composition design and microstructural characterization of calcined kaolin-based geopolymer cement[J].Applied clay science,20103/4(3/4):271. |
| [14] | Duxson P;Mallicoat SW;Lukey GC;Kriven WM;van Deventer JSJ.The effect of alkali and Si/Al ratio on the development of mechanical properties of metakaolin-based geopolymers[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,20072/3(2/3):8-20. |
| [15] | Panias D;Giannopoulou IP;Perraki T.Effect of synthesis parameters on the mechanical properties of fly ash-based geopolymers[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,20071/3(1/3):246-254. |
| [16] | 施惠生;林茂松;郭晓璐.粉煤灰基地聚合物材料的研究进展[J].粉煤灰综合利用,2011(3):42-46. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%