垃圾飞灰与粉煤灰协同熔融制备CAS体系微晶玻璃的研究

doi:10.11896/cldb.23120096

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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

Published: 10 January 2025 Online: 2025-01-10

CLC number:

TF09

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	Articles by authors
	WEI Xin
	JIAO Fen
	LIU Wei
	GU Siyu
	WANG Chen
	QIN Wenqing

Cite this article:

WEI Xin,JIAO Fen,LIU Wei, et al. Study on Preparation of CAS Glass-ceramics by Collaborative Melting of MSWI Fly Ash and Coal Fly Ash[J]. Materials Reports, 2025, 39(1): 23120096-8.

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https://www.mater-rep.com/EN/10.11896/cldb.23120096 OR https://www.mater-rep.com/EN/Y2025/V39/I1/23120096

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