METHOD FOR CORDIERITE GLASS CERAMIC MATERIAL PRODUCTION Russian patent published in 2017 - IPC C03C10/08 C04B35/195 

FIELD: chemistry.

SUBSTANCE: method comprises magnesium aluminium silicate glass wet grinding to obtain an aqueous slurry with a density of 2.06-2.20 g/cm³, pH of 8.0-9.5 and fineness with a residue of 6.0-12.0 % on a 0.063 mm sieve in the presence of a polyacrylic acid sodium salt in an amount of 1.6-2.0 % by volume of the dispersion medium to be loaded. Preform are moulded and heat treated with a lifting speed and temperature lowering of not more than 500°C per hour. The heat treatment of preforms is carried out in two stages - the first stage temperature is 850°C held for 3 hours, and further holding for 1-3 hours at a temperature in the range of 1330-1350°C.

EFFECT: simplification of glass-ceramic material production process.

2 ex, 1 tbl