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Related Experiment Video

Updated: Jul 16, 2026

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Crystallization-Foaming Coupling in Foam Glass-Ceramics from Multi-Source Coal Power Wastes.

Yan He1, Boxiong Shen2

  • 1School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China.

Materials (Basel, Switzerland)
|July 15, 2026
PubMed
Summary

This study transforms coal fly ash, coal bottom ash, and desulfurization gypsum into high-performance foam glass-ceramics. Optimal processing yields materials with excellent strength, insulation, and chemical stability, offering a sustainable waste utilization solution.

Keywords:
coal bottom ashcoal fly ashcrystallization–foaming couplingdesulfurization gypsumfoam glass-ceramics

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Preparation of Carbon Fiber and Bamboo Fiber Reinforced Poly (butylene Adipate-co-terephthalate) Foams by Supercritical Carbon Dioxide Foaming

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Area of Science:

  • Materials Science
  • Waste Management
  • Ceramic Engineering

Background:

  • Large-scale disposal of coal fly ash (CFA), coal bottom ash (CBA), and desulfurization gypsum (DG) presents significant environmental challenges.
  • There is a critical need for high-value utilization strategies for these industrial byproducts.

Purpose of the Study:

  • To develop a synergistic method for preparing foam glass-ceramics using CFA, CBA, and DG.
  • To investigate the impact of sintering temperature and DG content on material properties.
  • To understand the underlying mechanisms governing the preparation process.

Main Methods:

  • Sintering-foaming method was employed to fabricate foam glass-ceramics.
  • Systematic investigation of sintering temperatures ranging from 1200-1230 °C.
  • Varied desulfurization gypsum content from 0-5 wt.% to assess its influence.

Main Results:

  • Optimal foam glass-ceramics achieved at 1220 °C with 2 wt.% DG, exhibiting a bulk density of 1.0030 g/cm³, 62.09% porosity, 9.66 MPa compressive strength, and 0.6156 W/(m·K) thermal conductivity.
  • Materials demonstrated excellent chemical stability with >96% acid resistance and >98% alkali resistance.
  • Leaching of heavy metals remained well below regulatory limits, confirming environmental safety.

Conclusions:

  • A synergistic crystallization-foaming coupling effect was identified as crucial for optimal properties.
  • Appropriate DG content (2 wt.%) enhances pore structure stability and material performance.
  • This research provides a foundation for utilizing multiple power plant wastes in foam glass-ceramic production.