METHOD OF PRODUCING BRICK GLAZE Russian patent published in 2021 - IPC C04B41/86 

FIELD: construction.

SUBSTANCE: invention relates to the industry of construction materials and specifically to methods of making brick glazes applied on ceramic bricks used to make structural decorative functions, for finishing of internal walls of vestibules, staircases, passages, interiors of separate architectural elements of buildings and facades. In the method of producing brick glaze, mixture is used as a charge, containing, wt. %: low-melting clay 30–40; blast-furnace slag 17–20; microsilica 13–15; burning out of burnt rock 12–15; flue dust 13–15; water is the rest, and the glaze preparation process is carried out in three stages. At the first stage blast-furnace slag is crushed and burnt rock is screened with addition of water to particle size of 50–60 mcm. At the second step, the obtained suspension is mixed with silica, flue dust and low-melting clay pre-ground to 55–60 mcm. At the third stage, this suspension is sprayed into the upper part of the boiling layer furnace and is heat treated at temperature of 950–1100 °C for 30–40 minutes.

EFFECT: technical result is possibility of using glaze for all types of ceramic bricks, as well as high strength and frost resistance.

1 cl, 1 dwg, 2 tbl