METHOD OF PREPARING CERAMIC GLASS MATERIAL IN FORM OF SHEETS, SHEETS MADE USING SAID METHOD AND USE THEREOF Russian patent published in 2013 - IPC C03C10/12 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing ceramic glass material in form of large sheets that are suitable for use in construction for panelling and for making floor boards An oxide mixture used to produce the ceramic glass material is melted; the obtained vitreous mass is processed using operations and equipment usually used to process and produce glass. Said oxide mixture consists of the following, wt %: SiO₂: 50-80%; Al₂O₃: 5-30%; Li₂O: 3-20%, and optionally other oxides, wherein the other oxides are selected from a group consisting of ZnO, P₂O₅, K₂O, Na₂O, CaO, MgO, BaO, ZrO₂. The obtained material is subjected to a thermal crystallisation cycle, which is the last step preceding final cooling at temperature from 550°C to 920°C for 2 to 6 hours, wherein the full cycle is 12-25 hours long. The crystallisation cycle is carried out while raising temperature in steps by 20°C.

EFFECT: enabling continuous production of large sheets and changing the colour and transparency of material during crystallisation.

7 cl, 3 ex