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Effects of Particle Size on the Fusion of Soda–Lime–Silicate Glass Containing NaCl
Author(s) -
Savard Michael E.,
Speyer Robert F.
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb03658.x
Subject(s) - particle size , dissolution , dolomite , eutectic system , mineralogy , particle (ecology) , materials science , enstatite , calcite , fusion , soda lime , chemical engineering , chemistry , metallurgy , microstructure , geology , composite material , chondrite , oceanography , meteorite , physics , astronomy , engineering , linguistics , philosophy
The coupled effects of particle size and 1 wt% NaCl additions on the sequence of melting reactions in a multicomponent system (sand–soda ash–calcite–dolomite–feldspar) were studied using data from DTA, DTGA, and XRD interactively. Glass batches varied in average particle size from 250 μm to finer than 45 μm. Milestone events in the fusion process of the coarse particle base glass were elucidated. The termination temperature of the last significant reaction associated with CO 2 release was 35°C lower in the fine particle size batch than with the coarsest batch. Liquid‐phase formation at ∼523°C in the batch with 1 wt% NaCl occurred to an increasingly sizable extent with decreasing particle size. This contrasts with a similar effect at ∼630°C for a comparable batch without NaCl via eutectic melting between soda ash and dolomite. Sodium chloride additions significantly enhanced dissolution of CaO relic.