METHOD OF MAKING HEAT INSULATING ARTICLES Russian patent published in 2014 - IPC C04B28/26 C04B38/08 C04B40/00 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to production of heat insulating building materials in form of slabs, casings and other articles with a given geometrical shape and size. In the method of making heat insulating articles, which involves feeding and mixing expanded vermiculite and liquid glass with density of 1360-1450 kg/m³, followed by moulding and heat treatment, liquid glass with modulus of 2.8-3.2 is used, and the articles are moulded while heating the prepared crude mixture at temperature of 500-550°C for 1 hour, said crude mixture containing, wt %: said liquid glass 70-73, expanded vermiculite 27-30 and said mixture is loaded into dismountable metal moulds equipped with covers with rigid catchers, and packed with compression coefficient K_com of 1.1-1.5 while filling the entire inner volume of the mould; after cooling to temperature of 120-150°C, the moulds re dismantled and the articles with the given shape and size are removed. The invention is developed in subclaims.

EFFECT: simple technique, shorter duration of the process and improved properties of the articles.

2 cl, 1 ex, 2 tbl