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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2026, Vol. 45 ›› Issue (4): 1231-1239.DOI: 10.16552/j.cnki.issn1001-1625.2025.0951

• Solid Waste and Eco-Materials • Previous Articles     Next Articles

Current Status of Fluorine-Containing Sludge Disposal and Research Progress in Glass Solidification

ZHOU Zeyun1(), CHEN Jinmiao1, PENG Cairu1, TIAN Yingliang1,2, YU Guangcai3, HE Feng1,2, ZHAO Zhiyong1,2(), WU Yufeng1,2   

  1. 1.College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China
    2.State Key Laboratory of Materials Low-Carbon Recycling,Beijing University of Technology,Beijing 100124,China
    3.Hebei Province Tailings Microcrystalline Glass Electric Melting Technology Innovation Center,Chengde 067000,China
  • Received:2025-09-25 Revised:2025-11-02 Online:2026-04-20 Published:2026-05-14
  • Contact: ZHAO Zhiyong

Abstract:

Fluorine-containing sludge represents a primary pollutant generated during the production processes of industries such as photovoltaic and optoelectronic devices, semiconductors, fluorochemical engineering, and electronic information industry. Its main component is CaF2, which has potential resource recovery. Common resource utilization approaches include high-purity extraction of CaF2 and direct recycling of fluorine-containing sludge. The former encompasses methods such as flotation enrichment, acid leaching purification, and atmospheric distillation, while the latter involves using the sludge as a raw material to produce zeolite, cement, and glass. Among these, the glass solidification method is frequently employed for the safe and stable immobilization of hazardous elements, enabling efficient and reliable treatment of fluorine-containing sludge. This review discusses the current status of fluorine-containing sludge disposal and the glass solidification method, providing valuable insights and references for future management strategies.

Key words: fluorine-containing sludge, sludge disposal, resource utilization, glass solidification, calcium fluoride

CLC Number: