FIELD: manufacture of glass ceramics. SUBSTANCE: batch mixture includes the following components, % by weight: silica sand 16-30; soda 5-15 and alumina concentration slurry for the balance. The characterization of glass-ceramic material is as follows: water resistance 99.7-99.85 % , compressive strength 470-495 MPa, microidentation hardness 7.22-8.03 GPa. EFFECT: improved product quality. 3 tbl
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