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材料导报  2025, Vol. 39 Issue (1): 23120096-8    https://doi.org/10.11896/cldb.23120096
  无机非金属及其复合材料 |
垃圾飞灰与粉煤灰协同熔融制备CAS体系微晶玻璃的研究
魏鑫, 焦芬*, 刘维, 顾丝雨, 汪辰, 覃文庆
中南大学资源加工与生物工程学院, 长沙 410083
Study on Preparation of CAS Glass-ceramics by Collaborative Melting of MSWI Fly Ash and Coal Fly Ash
WEI Xin, JIAO Fen*, LIU Wei, GU Siyu, WANG Chen, QIN Wenqing
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
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摘要 将水洗预处理后的生活垃圾焚烧飞灰(WFA)与粉煤灰(CFA)协同处置,通过“熔融-热压成形”一步法热处理制备CaO-Al2O3-SiO2体系微晶玻璃。结果表明:添加15 g辅料、3 g晶核剂(TiO2)和6 g碳粉,当WFA、CFA和SiO2用量分别为35 g、35 g和25.5 g,m(CaO)/m(SiO2)为0.54时,在1 050 ℃下热处理1 h,得到晶相分布均匀、相对结晶度为93.66%的微晶玻璃,其密度为2.79 g/cm3、吸水率为0.04%、耐酸度为99.71%、耐碱度为99.83%、抗压强度为350.87 MPa、维氏硬度为6.52 GPa。经毒性浸出测定,该微晶玻璃符合国家标准,为垃圾飞灰的高值化利用提供了技术保障。
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魏鑫
焦芬
刘维
顾丝雨
汪辰
覃文庆
关键词:  垃圾飞灰  协同配比  微晶玻璃  物化性能  重金属    
Abstract: The CaO-Al2O3-SiO2 glass-ceramics was prepared by one-step “melting-hot pressing and forming” heat treatment, using fly-ash from municipal solid waste incineration after water washing pretreatment (WFA) and coal fly ash (CFA) as feeding materials. The results showed that with the addition of 15 g excipients, 3 g nucleating agent (TiO2), and 6 g carbon powder, when the amounts of WFA, CFA, and SiO2 were 35 g, 35 g, and 25.5 g respectively, and m(CaO)/m(SiO2) was 0.54, the glass-ceramics with uniform crystal phase distribution and relative crystallinity of 93.66% was obtained after 1 hour of heat treatment at 1 050 ℃. The main physical and mechanical features of the as-prepared CAS glass-ceramic were as follows:volume density 2.79 g/cm3, water absorption 0.04%, acid resistance 99.71%, alkali resistance 99.83%, compressive strength 350.87 MPa, and vickers hardness 6.52 GPa. The toxicity measured by leaching test was in line with the national standard. The output of this work provides technical support for the valorization of incineration fly ash.
Key words:  MSWI fly ash    collaborative ratio    glass-ceramic    physical and chemical properties    heavy metal
出版日期:  2025-01-10      发布日期:  2025-01-10
ZTFLH:  TF09  
基金资助: “十三五”国家重点研发计划(2020YFC1909203);湖南省高新技术产业科技创新计划(2022GK4060)
通讯作者:  *焦芬,中南大学资源加工与生物工程学院教授、博士研究生导师。目前主要研究方向为复杂难处理矿产资源分离与综合利用基础理论与应用、固废资源化。jfen0601@126.com   
作者简介:  魏鑫,中南大学资源加工与生物工程学院硕士研究生,目前主要研究领域为固废资源化。
引用本文:    
魏鑫, 焦芬, 刘维, 顾丝雨, 汪辰, 覃文庆. 垃圾飞灰与粉煤灰协同熔融制备CAS体系微晶玻璃的研究[J]. 材料导报, 2025, 39(1): 23120096-8.
WEI Xin, JIAO Fen, LIU Wei, GU Siyu, WANG Chen, QIN Wenqing. Study on Preparation of CAS Glass-ceramics by Collaborative Melting of MSWI Fly Ash and Coal Fly Ash. Materials Reports, 2025, 39(1): 23120096-8.
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https://www.mater-rep.com/CN/10.11896/cldb.23120096  或          https://www.mater-rep.com/CN/Y2025/V39/I1/23120096
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