Abstract: The invention relates to a method for producing mineral wool, wherein a mineral base material is melted in a cupola furnace having a shaft to hold the base material, the lower section of said shaft being provided with a grate, and beneath said grate there is a combustion chamber. The combustion chamber is heated by one or a plurality of burners, the burner or burners being run on liquid or gaseous fuel and an oxygen-containing gas. The burners are operated such that the length of the flames occurring during combustion of the fuel with the oxygen-containing gas is between 60% and 100% of the combustion chamber diameter.

Abstract: The invention relates to a method for producing mineral wool, wherein a mineral base material is melted in a cupola furnace having a shaft to hold the base material, the lower section of said shaft being provided with a grate, and beneath said grate there is a combustion chamber. The combustion chamber is heated by one or a plurality of burners, the burner or burners being run on liquid or gaseous fuel and an oxygen-containing gas. The burners are operated such that the length of the flames occurring during combustion of the fuel with the oxygen-containing gas is between 60% and 100% of the combustion chamber diameter.

Abstract: Method and device for manufacturing siliceous melts to produce light-yellow mineral wool fibres using a cupola furnace includes (a) a charge including at least two different types of briquet, wherein chemical components take into account an anticipated proportion of iron, (b) the components of Al2O3 in the briquets are a supporting structure for the melting process, (c) a plurality of high temperature gas burners for heating, an arrangement of said gas burners chosen such that the burner flames reinforce each other, (d) collecting pan flared conically downwards from a mantle of a shaft in the furnace to a floor of the furnace.