Abstract
Borax fluxing agent was added to four kinds of coal ash in terms of different quality ratios. The ash fusion test (AFT) of the mixtures of coal ash plus borax fluxing agent was carried out and the reactivity of mullite in coal ash was calculated by the density functional theory (DFT). The space group of the mullite is Pbam, belonging to the orthorhombic system. The results suggest that mullite is likely to combine with electron acceptor rather than with electron donor. The activity of Si is higher than that of Al when mullite combines with the electron donor. When borax is added into mullite, Na + as the electron acceptor easily enters into the lattice of mullite, causing a transition from mullite to nepheline. The calculation results agreed well with the AFT results under reducing atmosphere.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
