Method of producing foamed glass

摘要

A method is described for producing foamed glass characterized by (1) blending mineral powders, which are amorphous, or capable of being rendered amorphous by heating to a few hundred degrees centigrade, and which have a high SiO2 content and large specific area, with gas forming agents and alkali silicate, and (2) heating this mixture in the range 750 to 950 DEG C, whereby the mixture expands due to formation of gas therein and becomes set in the thus-expanded condition.