FIELD: chemistry.
SUBSTANCE: invention relates to the composition of fireproof mixtures and can be used during the laying of the upper sectors of glass furnaces. The fireproof mixture has a composition of, mass %: silica powder 60-64; ortho-phosphoric acid 16-20; refractory clay 4-6; dolomite powder 4-6; powdered discarded portion of the raw material zircon-ilmenitory ore.
EFFECT: strengthening the products made from the mixture.
1 tbl
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