Buletinul Institutului Politehnic din Iași Secția Chimie și Inginerie Chimică ISSN: 2537-2947
ISSN-L: 0254-7104
2024, Volume 70(74), Issue 4 (December), pp. 63 - 76
Cellular Glass-Ceramic from Recycled Residual Glass, Metakaolin and Coal
Fly Ash
LUCIAN PĂUNESCU, Daily Sourcing & Research SRL,
Bucharest, Romania,
lucianpaunescu16@gmail.com SORIN MIRCEA AXINTE, Daily Sourcing & Research SRL,
Bucharest, Romania; National Faculty of Applied Chemistry and Materials
Science, University of Science and Technology “Politehnica” Bucharest,
Romania LILIANA MARINESCU, Faculty of Applied Chemistry and Materials Science,
National University of Science and Technology “Politehnica” Bucharest,
Romania
Abstract In this paper, the care for environmental health was
promoted, selecting raw materials that meet these requirements. Thus,
recycled glass waste in predominant proportion, coal fly ash as a by-product
of the energy industry, and a natural alumina-silicate material (metakaolin)
were used. Silicon carbide (SiC) was chosen as an expanding agent. Although
insignificantly used until now for high-temperature industrial processes,
the microwave heating has been adopted to perform the sintering and
expanding process. The results showed very good thermal insulation
properties and high mechanical strength of the optimal expanded product.
Keywords: glass-ceramic, cellular, glass, metakaolin, coal fly ash