Cellular glass product and process for making the same

Abstract

Disclosed is a cellular glass product having a density D at ambient temperature of at most 200 kg / m3 and a process for the production of a cellular glass product having a density D at ambient temperature of at most 200 kg / m3. The process comprises the steps of: a) contacting glass powder with foaming agent to form a dry mixture, b) thermally treating the mixture in a foaming furnace, thereby forming cellular glass, and c) annealing the cellular glass of step b) in an annealing lehr, wherein the concentration of at least one of the reagents in the dry mixture of step a) that are necessary for enabling the foaming reaction is at least 150% of the concentration corresponding to the theoretical minimum requirement for obtaining the density D.

Description

technical field [0001] The present invention relates to honeycomb glass products and methods of making honeycomb glass products, and in particular, but not exclusively, to honeycomb glass products made from glass and one or more foaming reactants, by means of the foaming reaction matter, which can form foaming gas in a higher supersaturated state. Background technique [0002] Glass is an inorganic fusion product that has been cooled to a rigid state without crystallization (ASTM C-162). The most common glass is silicate glass. The basic structural unit of silicate glasses is the silicon-oxygen tetrahedron, in which a silicon atom is tetrahedrally coordinated to four surrounding oxygen atoms. Similar to crystalline silicates, SiO in silicate glasses 4 Tetrahedra exist in various configurations depending on the ratio of oxygen to silicon in the glass composition. [0003] Some glasses occur naturally, such as perlite, pumice, obsidian, pitch stone, and volcanic ash. Othe...

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Problems solved by technology

The gain in reduced k-values ​​is thus accompanied by a simultaneous decrease in compressive strength

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