METHOD OF MANUFACTURE OF WALL CERAMIC ARTICLES Russian patent published in 2005 - IPC

FIELD: wall and facing ceramics; manufacture of heat-insulating and decorative materials: tiles, blocks, wall panels.

SUBSTANCE: proposed method includes grinding of clay component, introduction of foam glass grits at size of grains of 0.1-5.0 mm preliminarily treated with water-repellent agent till obtaining of smooth surface, moistening and plasticizing, molding blanks by semi-dry method, drying and burning. Molding mass contains components at the following ratio, mass-%: water-repellent foam glass grits, 5-70; the remainder being clay component. Amount of water-repellent agent ranges from 0.1 to 10% of mass of grits. Molding of blanks by semi-dry molding method is performed at specific pressure of 4 Mpa. Waterproofed grits may be of egg-shaped or spherical form.

EFFECT: reduced heat conductivity and density of wall ceramic panels at retained strength.

2 cl, 3 tbl, 2 ex