Urban incinerator grate ash used as raw material to produce sintered glass-ceramics

Sintering is shown to be a very convenient alternative way to valorise urban incinerator grate ash as raw material to produce glass-ceramics. The results reached by thermal, mineralogical, physical and microstructural analysis show that it is possible to obtain sintered finished products constituted of common silicate crystalline phases (wollastonite, diopside/augite) by heat treatments with shorter time and lower temperature with respect to the bulk devitrification