FIELD: chemistry.
SUBSTANCE: invention relates to a crude mixture for melt for producing continuous mineral fibres. Crude mixture for producing fibres contains 30 % to 70 % basalt and/or diabase, 19 % to 34 % quartz sand and 7 % to 13 % of blast-furnace slag.
EFFECT: technical result consists in improvement of heat resistance, tensile strength, resistance to chemicals and alkali.
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