Glass-ceramics obtained by the recycling of end of life cathode ray tubes glasses.
This work is concerned with open-loop recycling of end of life Cathode Ray Tubes glass (an unsolved problem when considering that in Europe almost 90% of EOL electronic goods is disposed of in landfills), focusing on the development of glass-ceramics from panel or funnel glass with dolomite and alumina, and the evaluation of the tendency towards crystallisation with particular attention on composition and thermal treatment. Glasses were melted at a temperature of about 1500 degrees C and transformed into glass-ceramics by different thermal treatments (900 degrees C to approximately 1100 degrees C temperature range and 0.5 to approximately 8h soaking time). By using the evaluation of thermal, mineralogical and microstructural data it has been pointed out that a good degree of crystallisation is reached at about 1000 degrees C and with a high proportion of waste glass (50-75%) if 40-45% of CaO and MgO bearer (dolomite) is introduced. In this way alkaline and alkaline-earth silicate and aluminosilicate mainly develop probably with a surface mechanism.
Andreola
F
F
Dipartimento di Ingegneria dei Materiali e dell'Ambiente, Facoltà di Ingegneria, Università di Modena e Reggio Emilia, Modena, Italia.
Barbieri
L
L
Corradi
A
A
Lancellotti
I
I
Falcone
R
R
Hreglich
S
S
D002516:Ceramics; D003247:Conservation of Natural Resources; D003460:Crystallization; D003626:Data Display; D004581:Electronics; D005898:Glass; D008422:Materials Testing; D012037:Refuse Disposal / Q000379:methods*; D013696:Temperature