METHOD OF PREPARING RAW MIX FOR FABRICATING GLASS FOAM Russian patent published in 2005 - IPC

FIELD: manufacture of building materials.

SUBSTANCE: invention relates to building materials with low values of heat conductivity and density. Preparation of raw mix comprises stirring glass-forming components and powderlike additives containing gasifier among other components. Glass-forming component utilized is sodium and/or potassium silicate aqueous solution taken in amounts 30 to 70% and silicate-reactive additive is fine powder of broken glass. Stirring is carried out at temperature not superior to 70°C and, after stirring, resulting mix is subjected to heat treatment at temperature between 450 and 550°C for a period of time long enough to completely remove of water, including chemically bound one, after which mix is cooled and powdered.

EFFECT: improved reproducibility of homogenous fine-porous structure of glass foam containing closed pores, improved heat-engineering characteristics, and reduced cost production cost.

2 cl