FIELD: manufacture of building materials at low heat conductivity and density; production of granulated foamed glass from non-assorted broken glass at form of granules close to ball-shaped.
SUBSTANCE: initial raw mixture is made from aqueous alkaline solution of sodium silicate in the amount of no less than 30-70 mass-% and broken glass powder of arbitrary chemical composition in the amount of 25-65 mass-%. This raw mixture is subjected to heat treatment to dehumidified state and powder-like charge and aqueous dispersion are prepared in presence of plasticizing agents. Product thus obtained is dried at dried at temperature of 450-500°C, pelletized and is held at foaming temperature within range of 800-850°C.
EFFECT: reduced labor consumption and power requirements.
4 cl, 1 tbl, 1 ex
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