富镁镍渣-粉煤灰基地质聚合物的制备与性能表征

摘要/Abstract

摘要： 以工业固体废弃物富镁镍渣和粉煤灰为原料,以水玻璃和NaOH为碱激发剂,制备了一系列富镁镍渣-粉煤灰基地质聚合物。研究了不同粉煤灰掺量对地质聚合物力学性能的影响,并测定地质聚合物的线性收缩和碱溶出,通过XRD、IR、DTA等手段对产物进行表征。结果表明:富镁镍渣-粉煤灰基地质聚合物的强度随粉煤灰的掺入先升高后降低,当掺量为30%(质量分数)时,地质聚合物的抗压强度可达最高值22.15 MPa,较镍渣基地质聚合物强度提高42.2%;XRD分析表明富镁镍渣中MgO以镁橄榄石相存在,而非游离态,故地质聚合物具有良好的体积安定性。

关键词: 富镁镍渣, 碱激发, 体积安定性, 力学性能, 地质聚合物

Abstract: A series of magnesium-rich nickel slag-fly ash-based geopolymers were prepared from industrial solid waste magnesium-rich nickel slag and fly ash with sodium silicate and NaOH as alkali activators. The effect of different fly ash content on the mechanical properties of geopolymers was studied, and the linear shrinkage and alkali dissolution of geopolymers were measured. The geopolymers were characterized by XRD, IR, DTA, etc. Results show that the strength of the magnesium-rich nickel slag-fly ash-based geopolymer increases first and then decreases with the increase of fly ash content. When the content of fly ash is 30% (mass fraction), the compressive strength of the geopolymer reaches the maximum strength with 22.15 MPa, which is 42.2% higher than that of nickel slag-based geopolymer. XRD result shows that the state of MgO in magnesium-rich nickel slag is forsterite phase, instead of free state, which ensures the good volume stability of geopolymer.

Key words: magnesium-rich nickel slag, alkali excitation, volume stability, mechanical property, geopolymer

中图分类号:

TQ172.4⁺4

刘洋, 吴锦绣, 封春甫, 杨圣玮, 冯福山, 王觅堂. 富镁镍渣-粉煤灰基地质聚合物的制备与性能表征[J]. 硅酸盐通报, 2021, 40(3): 921-928.

LIU Yang, WU Jinxiu, FENG Chunfu, YANG Shengwei, FENG Fushan, WANG Mitang. Preparation and Performance Characterization of Magnesium-Rich Nickel Slag-Fly Ash-Based Geopolymer[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(3): 921-928.

参考文献

[1] 张邦胜,刘贵清,刘昱辰,等.世界镍矿资源与市场分析[J].中国资源综合利用,2020,38(7):94-98.
ZHANG B S, LIU G Q, LIU Y C, et al. Analysis of world nickel ore resources and market[J]. China Resources Comprehensive Utilization, 2020, 38(7): 94-98 (in Chinese).
[2] 魏国.我国镍产业发展现状及市场分析[J].中国有色金属,2020(14):44-45.
WEI G. Development status and market analysis of nickel industry in china[J]. China Nonferrous Metals, 2020(14): 44-45 (in Chinese).
[3] 李小明,沈苗,王翀,等.镍渣资源化利用现状及发展趋势分析[J].材料导报,2017,31(5):100-105.
LI X M, SHEN M, WANG C, et al. Current situation and development of comprehensive utilization of nickel slag[J]. Materials Review, 2017, 31(5): 100-105 (in Chinese).
[4] 葛利杰,杨鼎宜,李浩,等.镍渣综合利用技术综述[J].江苏建材,2015(4):6-9.
GE L J, YANG D Y, LI H, et al. The technical summary of comprehensive utilization of nickel slag[J]. Jiangsu Building Materials, 2015(4): 6-9 (in Chinese).
[5] 李国洲,张燕云,马泳波,等.镍冶金渣综合利用现状[J].中国冶金,2017,27(8):1-5.
LI G Z, ZHANG Y Y, MA Y B, et al. Comprehensive utilization of nickel metallurgical residue[J]. China Metallurgy, 2017, 27(8): 1-5 (in Chinese).
[6] 张祥成,孟永彪.浅析中国粉煤灰的综合利用现状[J].无机盐工业,2020,52(2):1-5.
ZHANG X C, MENG Y B. Brief analysis on present situation of comprehensive utilization of fly ash in China[J]. Inorganic Chemicals Industry, 2020, 52(2): 1-5 (in Chinese).
[7] ZHANG Z H, PROVIS J L, REID A, et al. Geopolymer foam concrete: an emerging material for sustainable construction[J]. Construction and Building Materials, 2014, 56: 113-127.
[8] SINGH B, ISHWARYA G, GUPTA M, et al. Geopolymer concrete: a review of some recent developments[J]. Construction and Building Materials, 2015, 85: 78-90.
[9] 李保亮,王申,潘东,等.蒸养条件下镍渣水泥胶砂的水化产物与力学性能[J].硅酸盐学报,2019,47(7):891-899.
LI B L, WANG S, PAN D, et al. Hydration products and mechanical properties of ferronickel slag blended cement mortar under steam curing[J]. Journal of the Chinese Ceramic Society, 2019, 47(7): 891-899 (in Chinese).
[10] PHUMMIPHAN I, HORPIBULSUK S, RACHAN R, et al. High calcium fly ash geopolymer stabilized lateritic soil and granulated blast furnace slag blends as a pavement base material[J]. Journal of Hazardous Materials, 2018, 341: 257-267.
[11] WU Q S, WU Y, TONG W H, et al. Utilization of nickel slag as raw material in the production of Portland cement for road construction[J]. Construction and Building Materials, 2018, 193: 426-434.
[12] NAWAZ M, HEITOR A, SIVAKUMAR M. Geopolymers in construction-recent developments[J]. Construction and Building Materials, 2020, 260: 120472.
[13] TANG H M, PENG Z W, GU F Q, et al. Alumina-enhanced valorization of ferronickel slag into refractory materials under microwave irradiation[J]. Ceramics International, 2020, 46(5): 6828-6837.
[14] 孟渊,田斌守,邵继新,等.利用冶炼工业废弃物镍渣研制混凝土储热材料[J].混凝土与水泥制品,2015(2):93-95.
MENG Y, TIAN B S, SHAO J X, et al. Preparation for heat storage concrete by using smelting waste nickel slag[J]. China Concrete and Cement Products, 2015(2): 93-95 (in Chinese).
[15] VAN JAARSVELD J G S, VAN DEVENTER J S J, LORENZEN L. The potential use of geopolymeric materials to immobilise toxic metals: part I. Theory and applications[J]. Minerals Engineering, 1997, 10(7): 659-669.
[16] VAN JAARSVELD J G S, VAN DEVENTER J S J, SCHWARTZMAN A. The potential use of geopolymeric materials to immobilise toxic metals: part II. Material and leaching characteristics[J]. Minerals Engineering, 1999, 12(1): 75-91.
[17] 张召述.用工业废渣制备CBC复合材料基础研究[D].昆明:昆明理工大学,2007.
ZHANG Z S. Basic research on preparation of CBC composites from industrial waste residue[D]. Kunming: Kunming University of Science and Technology, 2007 (in Chinese).
[18] VAN DEVENTER J S J. Geopolymers and geopolymeric materials[J]. Journal of Thermal Analysis, 1989, 35(2): 429-441.
[19] VAN DEVENTER J S J, PROVIS J L, DUXSON P, et al. Reaction mechanisms in the geopolymeric conversion of inorganic waste to useful products[J]. Journal of Hazardous Materials, 2007, 139(3): 506-513.
[20] DUXSON P, PROVIS J L, LUKEY G C, et al. The role of inorganic polymer technology in the development of ‘green concrete’[J]. Cement and Concrete Research, 2007, 37(12): 1590-1597.
[21] 吴小缓,张杨,袁鹏,等.地质聚合物的研究进展与应用[J].硅酸盐通报,2016,35(12):4032-4037.
WU X H, ZHANG Y, YUAN P, et al. Research progress and applications of geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2016, 35(12): 4032-4037 (in Chinese).
[22] XU H, VAN DEVENTER J S J. The geopolymerisation of alumino-silicate minerals[J]. International Journal of Mineral Processing, 2000, 59(3): 247-266.
[23] 张长森,朱宝贵,李杨,等.镍渣/偏高岭土基地聚合物的制备与表征[J].材料导报,2017,31(23):193-197.
ZHANG C S, ZHU B G, LI Y, et al. Preparation and characterization of nickel slag/metakaolin based geopolymer[J]. Materials Review, 2017, 31(23): 193-197 (in Chinese).
[24] YANG T, ZHANG Z H, ZHU H J, et al. Re-examining the suitability of high magnesium nickel slag as precursors for alkali-activated materials[J]. Construction and Building Materials, 2019, 213: 109-120.
[25] ZHANG Z, ZHU Y C, YANG T, et al. Conversion of local industrial wastes into greener cement through geopolymer technology: a case study of high-magnesium nickel slag[J]. Journal of Cleaner Production, 2017, 141: 463-471.
[26] YANG T, WU Q S, ZHU H J, et al. Geopolymer with improved thermal stability by incorporating high-magnesium nickel slag[J]. Construction and Building Materials, 2017, 155: 475-484.
[27] 王顺祥,吴其胜,诸华军,等.富硅镁镍渣粉磨细度和掺量对硅酸盐水泥水化特性的影响[J].材料科学与工程学报,2018,36(2):229-235.
WANG S X, WU Q S, ZHU H J, et al. Influence of grinding fineness and content of high silicon-magnesium nickel slag on hydration characteristics of Portland cement[J]. Journal of Materials Science and Engineering, 2018, 36(2): 229-235 (in Chinese).
[28] YANG T, YAO X, ZHANG Z H. Geopolymer prepared with high-magnesium nickel slag: characterization of properties and microstructure[J]. Construction and Building Materials, 2014, 59: 188-194.
[29] 李兆恒,杨永民,陈晓文,等.MgO对无机聚合物胶凝材料性能的影响及压蒸安定性评价[J].广东建材,2017,33(2):6-9.
LI Z H, YANG Y M, CHEN X W, et al. Effect of MgO on properties of inorganic polymer cementitious materials and evaluation of autoclaved stability[J]. Guangdong Building Materials, 2017, 33(2): 6-9 (in Chinese).
[30] ZHANG Z H, PROVIS J L, REID A, et al. Fly ash-based geopolymers: the relationship between composition, pore structure and efflorescence[J]. Cement and Concrete Research, 2014, 64: 30-41.
[31] 刘云.粉煤灰—镍铁渣地质聚合物的制备及其性能研究[D].济南:济南大学,2017.
LIU Y. Preparation and properties of fly ash-ferronickel slag geopolymer[D]. Jinan: University of Jinan, 2017 (in Chinese).
[32] 高术杰,倪文,李克庆,等.用水淬二次镍渣制备矿山充填材料及其水化机理[J].硅酸盐学报,2013,41(5):612-619.
GAO S J, NI W, LI K Q, et al. Preparation and hydrated mechanism of mine filling material of water-granulated secondary nickel slag[J]. Journal of the Chinese Ceramic Society, 2013, 41(5): 612-619 (in Chinese).