碱激发锂渣复合胶凝材料的流变、力学性能及水化特性

doi:10.16552/j.cnki.issn1001-1625.2024.1511

摘要/Abstract

摘要： 采用锂渣和矿粉制备碱激发复合胶凝材料,旨在解决锂渣的废弃问题并减少水泥生产的能耗及CO₂排放。主要分析了水胶比和锂渣掺量对材料流变性能的影响,同时进一步探讨了不同煅烧温度及锂渣掺量对材料力学性能的影响。研究表明:碱激发锂渣复合胶凝材料流动性随水胶比增大而提高,但随锂渣掺量增加而降低;锂渣的最佳煅烧温度为700 ℃,此条件下碱激发锂渣复合胶凝材料在90 d时展示出最优的抗折和抗压强度;25%(质量分数)的锂渣掺量为碱激发复合胶凝材料的最佳比例,掺量过大会抑制水化反应;与传统水泥熟料相比,碱激发锂渣复合胶凝材料的CO₂排放量和能耗明显减少。

关键词: 胶凝材料, 锂渣, 碱激发, 流变性能, 水化反应, CO₂排放量

Abstract: This study utilized lithium slag and mineral powder to prepare alkali-activated composite cementitious materials, aimed at addressing the disposal issues of lithium slag and reducing the energy consumption and CO₂ emissions from cement production. The research primarily analyzed the effects of water-binder ratio and lithium slag content on the rheological properties of materials, and further explored the effects of different calcination temperatures and lithium slag content on the mechanical properties of materials. The findings indicate that the fluidity of the alkali-activated lithium slag composite cementitious materials increases with the water-binder ratio, but decreases as the lithium slag content increases. The optimal calcination temperature for lithium slag is 700 ℃, under which the alkali-activated lithium slag composite cementitious materials exhibit the best flexural and compressive strength at 90 d. 25% (mass fraction) lithium slag content is the optimal proportion for the alkali-activated composite cementitious materials, as excessive content inhibits the hydration reaction. Compared to traditional cement clinker, the alkali-activated lithium slag composite cementitious materials significantly reduce CO₂ emissions and energy consumption.

Key words: cementitious material, lithium slag, alkali activating, rheological property, hydration reaction, carbon dioxide emission

中图分类号:

TU502⁺.6

姜涛, 邓毅, 李鸿峰, 金洪波, 罗程, 吴浩. 碱激发锂渣复合胶凝材料的流变、力学性能及水化特性[J]. 硅酸盐通报, 2025, 44(5): 1767-1778.

JIANG Tao, DENG Yi, LI Hongfeng, JIN Hongbo, LUO Cheng, WU Hao. Rheological, Mechanical Properties and Hydration Characteristics of Alkali-Activated Lithium Slag Composite Cementitious Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(5): 1767-1778.

参考文献

[1] 李琛. 碳达峰碳中和背景下水泥行业结构调整之路[J]. 江苏建材, 2021(5): 58-60.
LI C. The road of cement industry structure adjustment under the background of carbon peak and carbon neutralization[J]. Jiangsu Building Materials, 2021(5): 58-60 (in Chinese).
[2] WEI J X, CEN K. Empirical assessing cement CO₂ emissions based on China’s economic and social development during 2001—2030[J]. Science of the Total Environment, 2019, 653: 200-211.
[3] XU D L, CUI Y S, LI H, et al. On the future of Chinese cement industry[J]. Cement and Concrete Research, 2015, 78: 2-13.
[4] 张凯, 周荣, 颜洋. 水泥行业减污降碳协同路径[J]. 水泥, 2023(12): 18-20.
ZHANG K, ZHOU R, YAN Y. Collaborative path for reducing pollution and carbon in cement industry[J]. Cement, 2023(12): 18-20 (in Chinese).
[5] YANG P J, PENG S, BENANI N, et al. An integrated evaluation on China’s provincial carbon peak and carbon neutrality[J]. Journal of Cleaner Production, 2022, 377: 134497.
[6] 童林智. 锂渣-矿渣基胶凝材料性能研究及其在固化剂中的应用[D]. 南昌: 南昌大学, 2023.
TONG L Z. Study on properties of lithium slag-slag base composite cementitious material and its application in curing agent[D]. Nanchang: Nanchang University, 2023 (in Chinese).
[7] 丰丽琴, 王云帆, 覃文庆, 等. 江西某低品位锂云母矿浮选试验研究[J]. 非金属矿, 2019, 42(1): 60-62.
FENG L Q, WANG Y F, QIN W Q, et al. Experimental study on flotation of a low grade lepidolite ore from Jiangxi[J]. Non-Metallic Mines, 2019, 42(1): 60-62 (in Chinese).
[8] WANG Y R, WANG D M, CUI Y, et al. Micro-morphology and phase composition of lithium slag from lithium carbonate production by sulphuric acid process[J]. Construction and Building Materials, 2019, 203: 304-313.
[9] 陈志友, 苏小琼, 杨志文, 等. 锂云母锂渣性质及利用研究现状[J]. 硅酸盐通报, 2021, 40(3): 877-882.
CHEN Z Y, SU X Q, YANG Z W, et al. Research status of properties and utilization of lepidolite lithium slag[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(3): 877-882 (in Chinese).
[10] 郑文忠, 邹梦娜, 王英. 碱激发胶凝材料研究进展[J]. 建筑结构学报, 2019, 40(1): 28-39.
ZHENG W Z, ZOU M N, WANG Y. Literature review of alkali-activated cementitious materials[J]. Journal of Building Structures, 2019, 40(1): 28-39 (in Chinese).
[11] LIU Y W, SHI C J, ZHANG Z H, et al. Mechanical and fracture properties of ultra-high performance geopolymer concrete: effects of steel fiber and silica fume[J]. Cement and Concrete Composites, 2020, 112: 103665.
[12] KOVTUN M, KEARSLEY E P, SHEKHOVTSOVA J. Chemical acceleration of a neutral granulated blast-furnace slag activated by sodium carbonate[J]. Cement and Concrete Research, 2015, 72: 1-9.
[13] BAYAT A, HASSANI A, YOUSEFI A A. Effects of red mud on the properties of fresh and hardened alkali-activated slag paste and mortar[J]. Construction and Building Materials, 2018, 167: 775-790.
[14] BARBOSA L I, GONZÁLEZ J A, RUIZ M D C. Extraction of lithium from β-spodumene using chlorination roasting with calcium chloride[J]. Thermochimica Acta, 2015, 605: 63-67.
[15] GRANATA G, MOSCARDINI E, PAGNANELLI F, et al. Product recovery from Li-ion battery wastes coming from an industrial pre-treatment plant: lab scale tests and process simulations[J]. Journal of Power Sources, 2012, 206: 393-401.
[16] 胡志远. 锂渣复合渣混凝土研究[D]. 重庆: 重庆大学, 2008.
HU Z Y. Study on lithium slag composite slag concrete[D]. Chongqing: Chongqing University, 2008 (in Chinese).
[17] LIU Z, WANG J X, JIANG Q K, et al. A green route to sustainable alkali-activated materials by heat and chemical activation of lithium slag[J]. Journal of Cleaner Production, 2019, 225: 1184-1193.
[18] TAN H B, LI M G, HE X Y, et al. Preparation for micro-lithium slag via wet grinding and its application as accelerator in Portland cement[J]. Journal of Cleaner Production, 2020, 250: 119528.
[19] LUO Q, WANG Y S, HONG S X, et al. Properties and microstructure of lithium-slag-based geopolymer by one-part mixing method[J]. Construction and Building Materials, 2021, 273: 121723.
[20] LUO Q, LIU Y T, DONG B Q, et al. Lithium slag-based geopolymer synthesized with hybrid solid activators[J]. Construction and Building Materials, 2023, 365: 130070.
[21] KARRECH A, DONG M, ELCHALAKANI M, et al. Sustainable geopolymer using lithium concentrate residues[J]. Construction and Building Materials, 2019, 228: 116740.
[22] ALI S F, CHEN B, AHMAD M R, et al. Development of cleaner one-part geopolymer from lithium slag[J]. Journal of Cleaner Production, 2021, 291: 125241.
[23] 刘猛, 李百战, 姚润明. 水泥生产能源消耗内含碳排放量分析[J]. 重庆大学学报, 2011, 34(3): 116-120+131.
LIU M, LI B Z, YAO R M. Embodied carbon emission from energy consumption in the production of selected cement products[J]. Journal of Chongqing University, 2011, 34(3): 116-120+131 (in Chinese).
[24] MIAO Y, KONG C C, WANG L L, et al. A provincial lateral carbon emissions compensation plan in China based on carbon budget perspective[J]. Science of The Total Environment, 2019, 692: 1086-1096.
[25] DONG J L, ZHANG T T, ZHU Y C, et al. Synthesis of alkali-activated uncalcined pisha sandstone cement composites[J]. Composites Part B: Engineering, 2021, 225: 109311.
[26] 霍彬彬, 张吉雄, 周楠, 等. 十二烷基硫酸钠对碱激发煤气化渣充填料浆封存CO₂及流变性能的影响[J]. 采矿与安全工程学报, 2024, 41(6): 1279-1288.
HUO B B, ZHANG J X, ZHOU N, et al. Effect of sodium dodecyl sulfate on the CO₂ sequestration and rheological properties of alkali-activated coal gasification slag backfill pastes[J]. Journal of Mining & Safety Engineering, 2024, 41(6): 1279-1288 (in Chinese).
[27] GUO X L, LI Y X, SHI H S, et al. Carbon reduction in cement industry-an indigenized questionnaire on environmental impacts and key parameters of life cycle assessment (LCA) in China[J]. Journal of Cleaner Production, 2023, 426: 139022.
[28] ZHANG X S, LI H B, WANG H Y, et al. Properties of RCA stabilized with alkali-activated steel slag based materials in pavement base: laboratory tests, field application and carbon emissions[J]. Construction and Building Materials, 2024, 411: 134547.
[29] 肖建庄, 黎骜, 丁陶. 再生混凝土生命周期CO₂排放评价[J]. 东南大学学报(自然科学版), 2016, 46(5): 1088-1092.
XIAO J Z, LI A, DING T. Life cycle assessment on CO₂ emission for recycled aggregate concrete[J]. Journal of Southeast University (Natural Science Edition), 2016, 46(5): 1088-1092 (in Chinese).