METHOD OF MAKING CONGLOMERATE ENGOBE Russian patent published in 2008 - IPC C04B41/87 C04B33/18 

FIELD: construction.

SUBSTANCE: any type of clay can be used when making conglomerate angobes, provided it can dissolve in natrium liquid glass. The clay is unfurled in water with natrium liquid glass up to 50-70% moisture. The quantity of liquid natrium glass added to the unfurled clay is equal to the quantity necessary for maximum dissolution of the watery ceramic slip with 40-45% moisture of the same clay. The unfurled clay is settled until it fully separates into sediments and a sedimental-stable suspension of clay minerals. The obtained water suspension of clay minerals, Particles of which are mot more than 1 mcm in size, are taken to the surface of the formed dry clay products, dried and are burnt in an acidic medium at temperature of 900-1050°C. An engobe-gloss coating with low water absorption capacity is obtained on the surface of the product.

EFFECT: simplified method of obtaining conglomerate engobes of various colours while using a wide range of clay types.

3 cl, 6 tbl