We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Influence of Fe x O y and Al 2 O 3 Contents on the Thermal Stability of Iron Ore-Waste Fibers: Key Mechanisms and Control.
- Authors
Li, Xiaoguang; Wang, Xiaohui; Fang, Xianju; Shen, Xianglong; Huang, Liding; Qin, Jinyi; Fu, Wanzhang; Li, Weiguang
- Abstract
Traditional rock wool fibres are susceptible to crystallization and pulverization. To mitigate this, glass fibres were produced from iron ore waste (IOW). When the ratio of Fe2+ and Fe3+ is 1:3 and the Al2O3 content is 10 wt.%, increasing the FexOy content enhances the thermal stability.At an FexOy content of 17–19% and an Al2O3 content of 10–13%, the glass transition temperature (Tg) peaked. Increasing the FexOy content from 10% to 20% enhanced the stability of Si-O and Al-O bonds and increased bridged oxygen, stabilizing the structure. Here, Fe2+ balances structural charges, while Fe3+ replaces some Al atoms in the network. When the Al2O3 content is 10–13% and the FexOy content is 17–19%, the thermal stability of the IOW rock glass reaches its optimal level. At 20% FexOy content, the structure becomes three-dimensional and cyclic, increasing polymerization. Consequently, incorporating FexOy alongside a 10% Al2O3 content improves thermal stability, supporting the development of high-stability rock wool from IOW. This approach also enhances the refractory properties of rock wool fibres within the FexOy-Al2O3-SiO2-MgO-CaO system.
- Subjects
GLASS transition temperature; GLASS fibers; ALUMINUM oxide; MINERAL wool; THERMAL stability
- Publication
Materials (1996-1944), 2024, Vol 17, Issue 14, p3480
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma17143480