The production of shaped glass-ceramic materials from inorganic waste precursors using controlled atmospheric DC plasma vitrification and crystallisation

D Deegan, C Chapman, C Bowen

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A tilting, twin electrode/torch cold skull plasma reactor has been used for the production of glass-ceramic materials from waste ashes and sediments. The reactor produced a homogeneous and de-gassed melt over a skull of the same composition within a single chamber, which allowed the rapid attainment of steady state conditions. The as-cast tiles were subjected to a scientifically defined cooling and heat treatment cycle to encourage the formation of crystalline phases and a uniform microstructure. The material performance requirements for economical viability, practical applications and ecological compatibility have been assessed. Dynamic process control has been used to compensate for the complex and variable nature of the waste streams to produce a consistent product.
Original languageEnglish
Pages (from-to)367-372
Number of pages6
JournalHigh Temperature Material Processes
Volume7
Issue number3
Publication statusPublished - 2003

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vitrification
Vitrification
skull
Glass ceramics
Ceramic materials
Crystallization
Ashes
direct current
reactors
Plasma Gases
ceramics
crystallization
Plasmas
Plasma torches
torches
glass
tiles
ashes
Tile
viability

Cite this

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AB - A tilting, twin electrode/torch cold skull plasma reactor has been used for the production of glass-ceramic materials from waste ashes and sediments. The reactor produced a homogeneous and de-gassed melt over a skull of the same composition within a single chamber, which allowed the rapid attainment of steady state conditions. The as-cast tiles were subjected to a scientifically defined cooling and heat treatment cycle to encourage the formation of crystalline phases and a uniform microstructure. The material performance requirements for economical viability, practical applications and ecological compatibility have been assessed. Dynamic process control has been used to compensate for the complex and variable nature of the waste streams to produce a consistent product.

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