JaLCDOI 10.18926/fest/11475
Title Alternative Material Recycling of Municipal Waste Slags by Using Phase Separation of Glass
FullText URL 012_161_165.pdf
Author Imaoka, Takuya| Sakida, Shinichi| Nanba, Tokuro| Miura, Yoshinari|
Abstract A novel recycling process of municipal waste slags obtaining Fe-free colorless materials was developed by using a phase separation of borosilicate glass. B(2)O(3) was added to a simulated waste slag to promote the phase separation. The slag glasses were heat-treated above glass transition temperatures, from which phase separation was successfully induced. The phase-separated slag glasses were still colored in black due to Fe ions, and after soaking in acid, they were successfully bleached, obtaining colorless solids. According to compositional analyses, no Fe ions were confirmed in the remaining insolubles, indicating that Fe ions were preferentially incorporated into the borate-rich phases soluble in acid. The main constituent of the colorless solids was SiO(2) and the end products obtained in the present process were expected as an alternative of pure silica glass.
Keywords slag recycling colorless glass phase separation
Publication Title 岡山大学環境理工学部研究報告
Published Date 2007-03-15
Volume volume12
Issue issue1
Start Page 161
End Page 165
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313957