Study for recycling of ceria-based glass polishing powder II-recovery of hydroxysodalite from the alkali waste solution containing SiO2 and Al2O3

Citation
K. Kato et al., Study for recycling of ceria-based glass polishing powder II-recovery of hydroxysodalite from the alkali waste solution containing SiO2 and Al2O3, IND ENG RES, 39(11), 2000, pp. 4148-4151
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemical Engineering
Journal title
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN journal
0888-5885 → ACNP
Volume
39
Issue
11
Year of publication
2000
Pages
4148 - 4151
Database
ISI
SICI code
0888-5885(200011)39:11<4148:SFROCG>2.0.ZU;2-W
Abstract
The recovery of SiO2 and Al2O3 from the alkali waste solution of the glass polishing powder-recycling process was investigated. The effects of seed cr ystal, stirring speed, and temperature were also studied. Hydroxysodalite w as obtained from the waste solution by heating to 80-100 degreesC. Addition of seed crystal shortened the reaction time and made easy the recovery of hydroxysodalite. The hydroxysodalite deposition process was rate-determined by the chemical reaction step, and increased temperature was also effectiv e in shortening a reaction time.