碱性水热活化选硫尾矿基地聚合物的制备及性能

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (10): 3704-3714.

碱性水热活化选硫尾矿基地聚合物的制备及性能

王文耀¹, 罗琦¹, 鲁刘磊¹, 赖金¹, 黄文昊¹, 庄荣传², 汪峻峰¹, 马俊³

1.深圳大学土木与交通工程学院,深圳 518060;
2.低品位难处理黄金资源综合利用国家重点实验室,龙岩 364200;
3.中国建筑第八工程局有限公司,深圳 518035

收稿日期:2024-02-27 修订日期:2024-05-11 出版日期:2024-10-15 发布日期:2024-10-16
通信作者: 罗琦,博士,副研究员。E-mail:chinalodger1@163.com汪峻峰,博士,教授。E-mail:drjunfengwang2010@163.com
作者简介:王文耀(1999—),男,硕士研究生。主要从事新型建筑材料的研究。E-mail:2110474052@email.szu.edu.cn
基金资助:
海南省重点研发项目(ZDYF2022SHFZ322);广东省滨海土木工程耐久性重点实验项目(SZU)(2020B1212060074)

Preparation and Properties of Sulfur Tailings-Based Geopolymer Activated by Alkaline Hydrothermal Method

WANG Wenyao¹, LUO Qi¹, LU Liulei¹, LAI Jin¹, HUANG Wenhao¹, ZHUANG Rongchuan², WANG Junfeng¹, MA Jun³

1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China;
2. State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Resources, Longyan 364200, China;
3. China Construction Eighth Engineering Division Co., Ltd., Shenzhen 518035, China

Received:2024-02-27 Revised:2024-05-11 Published:2024-10-15 Online:2024-10-16

摘要/Abstract

摘要： 为解决尾矿预处理方法能耗高的问题,探索一种低能耗的尾矿活化方法,对部分选硫尾矿进行碱性水热活化预处理以提高其活性,改善选硫尾矿基地聚合物的力学性能。研究活化温度和活化时间对碱性水热活化效果的影响,并采用X射线衍射技术、傅里叶变换红外光谱分析、热重分析、核磁共振成像分析和扫描电子显微镜测试对活化选硫尾矿及其制备的地聚合物进行性能表征。结果表明,当选硫尾矿在200 ℃下活化2.0 h后,制备的地聚合物3和28 d抗压强度最高,分别为15.5和22.1 MPa。碱性水热活化能有效破坏选硫尾矿中的结晶相,促进活性硅铝的溶出,在凝胶体系内部形成更多水化产物凝胶,改善地聚合物的孔结构,从而提高选硫尾矿基地聚合物的抗压强度。以上结果表明碱性水热活化法是一种可有效提高选硫尾矿活性的方法。

关键词: 地聚合物, 选硫尾矿, 碱性水热活化法, 无侧限抗压强度, 微观分析, 物相分析

Abstract: To solve the problem of high energy consumption in tailings pretreatment methods and explore a low energy consumption tailings activation method, alkaline hydrothermal activation pretreatment was carried out on part of sulfur tailings to enhance their activity and improve the mechanical properties of sulfur tailings-based geopolymers. The influences of activation temperature and activation time on alkaline hydrothermal activation effect have been studied. X-ray diffraction technology, Fourier transform infrared spectroscopy analysis, thermogravimetric analysis, nuclear magnetic resonance imaging analysis, and scanning electron microscopy test were used to characterize the performance of activated sulfur tailings and sulfur tailings-based geopolymers. The results show that when the sulfur tailings are activated at 200 ℃ for 2.0 h, the prepared geopolymer obtains the highest 3 and 28 d compressive strength, which are 15.5 and 22.1 MPa, respectively. Alkaline hydrothermal activation can effectively destroy the crystalline phase in sulfur tailings, promote the release of active silica and aluminum. More hydration product gel is formed in the gel system to improve the pore structure of geopolymer, thus improving the compressive strength of sulfur tailings-based geopolymers. The above experimental results indicate that alkaline hydrothermal activation is a method that can effectively improve the activity of sulfur tailings.

Key words: geopolymer, sulfur tailing, alkaline hydrothermal activation method, unconfined compressive strength, micro analysis, phase analysis

中图分类号:

X705

王文耀, 罗琦, 鲁刘磊, 赖金, 黄文昊, 庄荣传, 汪峻峰, 马俊. 碱性水热活化选硫尾矿基地聚合物的制备及性能[J]. 硅酸盐通报, 2024, 43(10): 3704-3714.

WANG Wenyao, LUO Qi, LU Liulei, LAI Jin, HUANG Wenhao, ZHUANG Rongchuan, WANG Junfeng, MA Jun. Preparation and Properties of Sulfur Tailings-Based Geopolymer Activated by Alkaline Hydrothermal Method[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(10): 3704-3714.

参考文献

[1] ZHANG X L, ZHANG S Y, LIU H, et al. Disposal of mine tailings via geopolymerization[J]. Journal of Cleaner Production, 2021, 284: 124756.
[2] PERUMAL P, PIEKKARI K, SREENIVASAN H, et al. One-part geopolymers from mining residues: effect of thermal treatment on three different tailings[J]. Minerals Engineering, 2019, 144: 106026.
[3] 张骞, 蓝桥发, 郭浩然, 等. 粉煤灰基地质聚合物固化低放射性稀土酸溶渣[J]. 有色金属(冶炼部分), 2023(7): 75-83.
ZHANG Q, LAN Q F, GUO H R, et al. Immobilization of low radioactive rare earth acid soluble slag by fly ash based geopolymer[J]. Nonferrous Metals (Extractive Metallurgy), 2023(7): 75-83 (in Chinese).
[4] 刘泽, 周瑜, 孔凡龙, 等. 碱激发矿渣基地质聚合物微观结构与性能研究[J]. 硅酸盐通报, 2017, 36(6): 1830-1834.
LIU Z, ZHOU Y, KONG F L, et al. Microstructure and properties of alkali-activated blast furnace slag based geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2017, 36(6): 1830-1834 (in Chinese).
[5] 罗哲, 黄敦文, 彭晖. 碱激发偏高岭土-矿渣砂浆的碱骨料反应机理研究[J]. 硅酸盐通报, 2023, 42(8): 2830-2836.
LUO Z, HUANG D W, PENG H. Alkali-aggregate reaction mechanism of alkali-activated metakaolin-slag mortar[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(8): 2830-2836 (in Chinese).
[6] 吕政晔, 张延博, 刘泽, 等. 赤泥基发泡地质聚合物的性能研究[J]. 硅酸盐通报, 2023, 42(10): 3624-3632.
LYU Z Y, ZHANG Y B, LIU Z, et al. Properties of red mud-based foamed geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(10): 3624-3632 (in Chinese).
[7] 居辰轩, 王豪杰, 侯浩波, 等. 热活化铅锌尾矿基碱激发胶凝材料的制备及性能[J]. 硅酸盐通报, 2022, 41(6): 2071-2081.
JU C X, WANG H J, HOU H B, et al. Preparation and properties of alkali activated cementitious materials based on thermally activated lead-zinc tailings[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(6): 2071-2081 (in Chinese).
[8] 郝明月, 李静, 蔡基伟, 等. 磁铁尾矿砂在水泥基材料中的化学稳定性研究[J]. 硅酸盐通报, 2023, 42(10): 3688-3694.
HAO M Y, LI J, CAI J W, et al. Chemical stability of magnetite tailings in cement-based materials[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(10): 3688-3694 (in Chinese).
[9] 覃风展. 浅谈尾矿库环境污染隐患及防治对策[J]. 有色金属设计, 2023, 50(1): 12-15.
QIN F Z. Discussion on risk of environmental pollution of TSF and the control measures[J]. Nonferrous Metals Design, 2023, 50(1): 12-15 (in Chinese).
[10] OBENAUS-EMLER R, FALAH M, ILLIKAINEN M. Assessment of mine tailings as precursors for alkali-activated materials for on-site applications[J]. Construction and Building Materials, 2020, 246: 118470.
[11] DABBEBI R, BARROSO DE AGUIAR J L, BAKLOUTI S. Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste[J]. Cement and Concrete Composites, 2020, 105: 103449.
[12] WU J, LI J, RAO F, et al. Mechanical property and structural evolution of alkali-activated slag-phosphate mine tailings mortars[J]. Chemosphere, 2020, 251: 126367.
[13] WEI B, ZHANG Y M, BAO S X. Preparation of geopolymers from vanadium tailings by mechanical activation[J]. Construction and Building Materials, 2017, 145: 236-242.
[14] LIU Q, LI X C, CUI M Y, et al. Preparation of eco-friendly one-part geopolymers from gold mine tailings by alkaline hydrothermal activation[J]. Journal of Cleaner Production, 2021, 298: 126806.
[15] LIU Q, SUN S K, JIA Z, et al. Effect of CaO on hydration properties of one-part alkali-activated material prepared from tailings through alkaline hydrothermal activation[J]. Construction and Building Materials, 2021, 308: 124931.
[16] GARCIA-LODEIRO I, PALOMO A, FERNÁNDEZ-JIMÉNEZ A, et al. Compatibility studies between N-A-S-H and C-A-S-H gels. Study in the ternary diagram Na₂O-CaO-Al₂O₃-SiO₂-H₂O[J]. Cement and Concrete Research, 2011, 41(9): 923-931.
[17] BELMOKHTAR N, AMMARI M, BRIGUI J, et al. Comparison of the microstructure and the compressive strength of two geopolymers derived from metakaolin and an industrial sludge[J]. Construction and Building Materials, 2017, 146: 621-629.
[18] 安赛, 王宝民, 陈文秀, 等. 矿渣-电石渣基地质聚合物的性能及作用机制[J]. 硅酸盐通报, 2023, 42(11): 3996-4005.
AN S, WANG B M, CHEN W X, et al. Performance and action mechanism of slag-carbide slag based geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(11): 3996-4005 (in Chinese).
[19] ZHANG D W, ZHAO K F, XIE F Z, et al. Effect of water-binding ability of amorphous gel on the rheology of geopolymer fresh pastes with the different NaOH content at the early age[J]. Construction and Building Materials, 2020, 261: 120529.
[20] 潘荣祥, 杨敏, 袁宏. 减水剂对赤泥-粉煤灰基地质聚合物性能的影响[J]. 硅酸盐通报, 2023, 42(9): 3212-3220.
PAN R X, YANG M, YUAN H. Effects of water reducing agents on performance of red mud-fly ash based geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(9): 3212-3220 (in Chinese).
[21] 朱绘美, 张煜雯, 迂晨, 等. 微波养护阶段碱激发粉煤灰胶凝材料的力学性能[J]. 建筑材料学报, 2022, 25(6): 558-564.
ZHU H M, ZHANG Y W, YU C, et al. Mechanical properties of alkali-activated fly ash cementitious materials under microwave curing stages[J]. Journal of Building Materials, 2022, 25(6): 558-564 (in Chinese).
[22] YAO G, LIU Q, WANG J X, et al. Effect of mechanical grinding on pozzolanic activity and hydration properties of siliceous gold ore tailings[J]. Journal of Cleaner Production, 2019, 217: 12-21.
[23] WANG J X, LYU X J, WANG L Y, et al. Influence of the combination of calcium oxide and sodium carbonate on the hydration reactivity of alkali-activated slag binders[J]. Journal of Cleaner Production, 2018, 171: 622-629.
[24] ABDALQADER A F, JIN F, AL-TABBAA A. Development of greener alkali-activated cement: utilisation of sodium carbonate for activating slag and fly ash mixtures[J]. Journal of Cleaner Production, 2016, 113: 66-75.
[25] TOBÁN J I, PAYÁ J J, BORRACHERO M V, et al. Mineralogical evolution of Portland cement blended with silica nanoparticles and its effect on mechanical strength[J]. Construction and Building Materials, 2012, 36: 736-742.
[26] 李莅山. 明矾石综合利用科研现状和进展[J]. 浙江化工, 1992, 23(3): 56-58.
LI L S. Present situation and progress of scientific research on comprehensive utilization of alunite[J]. Zhejiang Chemical Industry, 1992, 23(3): 56-58 (in Chinese).
[27] 李达, 蒋开喜, 蒋训雄, 等. 明矾石精矿焙烧脱水机理研究[J]. 中国资源综合利用, 2014, 32(11): 20-23.
LI D, JIANG K X, JIANG X X, et al. A study on the mechanism of dehydration of alunite ore by roasting[J]. China Resources Comprehensive Utilization, 2014, 32(11): 20-23 (in Chinese).
[28] JEONG Y, PARK H, JUN Y B, et al. Influence of slag characteristics on strength development and reaction products in a CaO-activated slag system[J]. Cement and Concrete Composites, 2016, 72: 155-167.
[29] WAN Q, ZHANG Y M, ZHANG R B. The effect of pore behavior and gel structure on the mechanical property at different initial water content[J]. Construction and Building Materials, 2021, 309: 125146.
[30] 陈永亮, 张轶轲, 陈铁军, 等. 碱激发高钙粉煤灰发泡地聚合物的制备及机理[J]. 硅酸盐通报, 2023, 42(8): 2787-2798.
CHEN Y L, ZHANG Y K, CHEN T J, et al. Preparation and mechanism of foaming geopolymer with alkali activated high calcium fly ash[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(8): 2787-2798 (in Chinese).