FIELD: chemistry.
SUBSTANCE: invention relates to production of foamed glass. The crude mixture for producing foamed glass contains the following components in wt %: scrap sheet glass 80.0-84.5; chalk 0.5-1.0; sludge 15.0-19.0. The sludge is characterised by the following composition in wt %: SiO2 - 41.0-50.3; Fe3+ - 25.0-33.1; Ca2+ - 4.0-6.0; Mg2+ - 1.5-2.4; HCO3 -, CO3 -, SO4 -, CI-, OHCl2- - 1.6-23.0.
EFFECT: low temperature for heat processing foamed glass.
1 tbl
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