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Production of Foamed Glass by Using Hydrolysis of Waste Glass (I) - Hydrolysis of Waste Glass -  

Lee, Chul-Tae (Department of Chemical Engineering, Dankook University)
Lee, Hong-Gil (Department of Chemical Engineering, Dankook University)
Publication Information
Applied Chemistry for Engineering / v.16, no.4, 2005 , pp. 519-526 More about this Journal
Abstract
Hydrolysis of soda-lime waste glass was investigated to test the feasibility for use of waste glass as feed material in the production of foamed glass. The soda-lime glass, such as plate glass and various bottle glasses, was effectively hydrolyzed by steam and water under high pressure. The proper condition for the hydrolysis was found to be reaction temperature of $250^{\circ}C$ and reaction time of 2 h. Under this condition, the water content of hydrated glass through hydrolysis was 7.85~10.04%, allowing successful foaming process for production of foamed glass. Using Na as the modifying agent of glass was effective in the hydrolysis by water. The highest water content of hydrated glass was obtained when weight ratio of NaOH to the glass was 0.04.
Keywords
waste glass; foamed glass; insulating construction material; hydrolysis; recycling;
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