FIELD: technological processes.
SUBSTANCE: invention is related to the field of heat insulation materials production. Charge for production of glass foam contains glass, carbonic gasifier and foaming agent (sodium or potassium nitrates) at the following ratio of components, wt %: glass (crushed) - 95.5-96.0; carbonic gasifier - 3.0-4.0; sodium or potassium nitrate - 1.0 -1.5. Glass is produced on the basis of silica-alumina rocks characterised by the following ratio of oxides SiO2/Al2O3=3.3-5.0 and SiO2/(Al2O3+Fe2O3)=2.45-4.20.
EFFECT: production of glass foam with pore size of 1,5-3,5 mm and density of 180-300 kg/m3.
4 cl, 6 tbl, 5 ex
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