Foaming of E-Glass (Report for G Plus Project for PPG)

Kim, Dong-Sang ; Hrma, Pavel R. ; Pilon, Laurent ; Dutton, Bryan C.

Pacific Northwest National Laboratory (U.S.)

关键词: Sulfate;    Foam;    E-Glass;    Glass Melting;    32 Energy Conservation, Consumption, And Utilization E-Glass;   

DOI  :  10.2172/15010631
RP-ID  :  PNNL-14625
RP-ID  :  AC05-76RL01830
RP-ID  :  15010631

美国|英语

来源: UNT Digital Library

【 摘 要 】

The behavior of foams generated in the crucible melts was investigated to study the effect of furnace atmosphere on E-glass foaming, specifically focused on its water content to understand the effect of oxy-firing. A quartz-crucible furnace equipped with video recording was used to observe the behavior and to evaluate stability of foams generated from the PPG E-glass under various atmospheres. The present study preliminarily concluded that the higher foaming in oxy-fired furnace compared to air-fired is caused by the effect of water on early sulfate decomposition, promoting more efficient refining gas generation from sulfate (known as ''dilution effect''), not by the effect of humidity on foam lamella stability. A plausible explanation for the difference between soda-lime glass and E-glass in the end result of the dilution effect on glass refining and foaming is presented. A preliminary experiment on the effect of heating rate also suggests that thermal history of glass melting can be a major factor in the rate of E-glass foaming. Approaches to develop the methods to reduce foaming in oxy-fired furnace are recommended.