Nucleation and crystallization kinetics of glass derived from incinerator fly ash waste

Abstract

Nucleation and crystallization kinetics concerning the conversion of a glass made from municipal solid waste (MSW) incinerator fly ash to glass-ceramics have been investigated. The maximum nucleation rate was found near 720 degreesC, Activation energies of crystallization were 468-293 kJ/mol and decreased with increasing powder particle size. Avrami exponents for crystallization were 1.5-2.0 which indicates that Surface crystallization dominates the overall crystallization. Maximum crystallization can be achieved in a temperature range of 870-980 degreesC and this temperature increased as the particle size of the specimen increased. (C) 2002 Elsevier Science Ltd and Techna S.r.l. All rights reserved.