METHOD FOR PRODUCTION OF MINERAL INSULATION Russian patent published in 2023 - IPC C03B37/00 F27B1/16 

FIELD: production of building materials.

SUBSTANCE: A method for the production of mineral wool using a continuous shaft melting furnace. To melt the stone material, simultaneous supply of both oxygen-enriched air and natural gas through the tuyeres in the lower part of the furnace is provided for its combustion using burners placed in each tuyere evenly around the circumference of the furnace. Oxygen is supplied through concentrically arranged burner channels, where oxygen is supplied at the first speed through the central channel surrounded by a natural gas supply channel, and oxygen is supplied at the second speed through the outer burner channel concentrically located around the natural gas supply channel, the value of which is from 1 to 5 values of the first speed; moreover, oxygen and natural gas is fed through burners into the furnace tuyeres in a ratio from 0.9:1 to 1.4:1, respectively.

EFFECT: The present invention enables to reduce the consumption of solid fuel in the cupola by up to 50% by replacing the energy from the combustion of coke with the energy obtained from the combustion of other fuel, without significant changes in the melting process of the stone material and the composition of the exhaust gases.

11 cl, 3 dwg