FIELD: production of stable dispersion systems of foams for manufacture of articles on base of clay, cement, gypsum and technogenious raw material. SUBSTANCE: proposed foaming agent includes stabilizer water glass and water; water glass is made on base of microsilica at specific surface more than 25000 sq cm/g and content of amorphous SiO2 of 90 to 95% by direct dissolving in alkali solution during one stage at atmospheric pressure and temperature of up to 100 C for 40 to 120 min. It additionally includes tall pitch emulsified by NaOH solution at the following ratio of components, mass-%: tall pitch, 25-50; water glass, 50-75. EFFECT: increased expansion of foam. 2 tbl
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