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硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (2): 569-578.DOI: 10.16552/j.cnki.issn1001-1625.2024.0937

• 资源综合利用 • 上一篇    下一篇

基于响应面法的多固废基地聚合物配比优化及其表征

黄梓谕1,2, 丁之尧2, 曹丹2, 沈锭2, 姚瞬雨2, 陈益人3, 任衍增3, 包申旭1,2   

  1. 1.关键非金属矿产资源绿色利用教育部重点实验室,武汉 430070;
    2.武汉理工大学资源与环境工程学院,武汉 430070;
    3.三川德青科技有限公司,武汉 430075
  • 收稿日期:2024-08-12 修订日期:2024-11-15 出版日期:2025-02-15 发布日期:2025-02-28
  • 通信作者: 包申旭,博士,教授。E-mail:sxbao@whut.edu.cn
  • 作者简介:黄梓谕(2002—),男。主要从事固体废弃物资源化利用方向的研究。E-mail:1614889322@qq.com
  • 基金资助:
    湖北省重点研发项目资助(2022BAA029);武汉理工大学自主创新研究基金资助项目(2022-ZH-A1-02)

Ratio Optimization and Characterization of Multi-Solid Waste-Based Geopolymer by Response Surface Method

HUANG Ziyu1,2, DING Zhiyao2, CAO Dan2, SHEN Ding2, YAO Shunyu2, CHEN Yiren3, REN Yanzeng3, BAO Shenxu1,2   

  1. 1. Key Laboratory of Green Utilization of Critical Non-Metallic Mineral Resources, Ministry of Education, Wuhan 430070, China;
    2. School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China;
    3. Safecleen Technologies Co., Ltd., Wuhan 430075, China
  • Received:2024-08-12 Revised:2024-11-15 Published:2025-02-15 Online:2025-02-28

摘要: 以燃煤渣、花岗岩石粉和高钙粉煤灰为主要原料,NaOH为激发剂制备地聚合物,在单因素试验的基础上,采用响应面法中的Box-Behnken Design模型,分析了不同固废质量掺比对地聚合物抗压强度的影响,并采用XRD、FTIR和SEM对地聚合物的物相组成与微观结构进行分析。研究表明,各固废质量掺比对响应值的影响顺序由大到小为高钙粉煤灰、燃煤渣、花岗岩石粉。其中花岗岩石粉与高钙粉煤灰交互作用显著。通过响应面优化后得到的最佳原料配比参数为燃煤渣质量掺比1.8、花岗岩石粉质量掺比0.8、高钙粉煤灰质量掺比7.0,该配比下地聚合物早期(7 d)平均抗压强度可达22.73 MPa。燃煤渣、花岗岩石粉和高钙粉煤灰通过地聚合反应相互协同生成无定形凝胶相与沸石类矿物,为地聚合物提供强度。花岗岩石粉和高钙粉煤灰的级配效应使地聚合物的结构更致密,该研究可为大宗量、多固废的协同处置应用提供参考。

关键词: 地聚合物, 响应面法, 抗压强度, 固废配比, 微观形貌

Abstract: In this paper, coal slag, granite powder and high calcium fly ash were used as the main raw materials, and NaOH was used as the activator to prepare geopolymer. On the basis of single factor experiment, the Box-Behnken Design model in response surface method was used to analyze the effects of different solid waste mass blending ratios on the compressive strength of geopolymer. The phase composition and microstructure of the geopolymer were analyzed by XRD, FTIR and SEM. The results show that the order of the influence of the mass ratio of each solid waste on the response value is high calcium fly ash, coal-fired slag, granite powder. The interaction between granite powder and high calcium fly ash is significant. The optimal raw material ratio parameters obtained by response surface optimization are as follows: the mass ratio of coal slag is 1.8, the mass ratio of granite powder is 0.8, and the mass ratio of high calcium fly ash is 7.0. Under this ratio, the average compressive strength of geopolymer at early stage (7 d) can reach 22.73 MPa. Coal slag, granite powder and high calcium fly ash cooperate with each other to form amorphous gel phase and zeolite minerals through geopolymerization reaction, which provides strength for geopolymer. The grading effect of granite powder and high calcium fly ash makes the structure of geopolymer denser. This study can provide a reference for the synergistic disposal of bulk and multi-solid waste.

Key words: geopolymer, response surface method, compressive strength, solid-waste ratio, microtopography

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