FIELD: refractory materials. SUBSTANCE: composition has, wt.-%: crushed quartz glass waste 72-80; boric acid 12-25, and at least one transient metal oxide of the group: iron, copper, nickel, cobalt, chrome 3-10. Properties: thermic stability at 1100-20 C is 400-4286 heat changes, mechanical strength is 5.9-9.8 kg/cm2. EFFECT: enhanced quality of composition. 1 tbl
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