METHOD AND APPARATUS FOR THE MANUFACTURE OF MINERAL WOOL

摘要

The invention relates to a method and an apparatus for the manufacture of mineral wool fibres with a fiberising apparatus comprising rotating rotors, in order to form mineral melt into fibres. The first and second rotors of the fiberising apparatus rotating toward each other form an upper rotor pair, and the fiberising apparatus comprises at least one further rotor, advantageously a rotor pair, which is arranged below the upper rotor pair. Mineral melt is fed from a melting furnace or the like in the form of a melt jet toward a first position on the mantle surface of the first rotor, from where it is thrown out from the mantle surface of the first rotor in the form of a drop cascade toward the mantle surface of the second rotor. A first portion of mineral melt is formed into fibres at the second rotor and blown off the rotor, and a second portion of mineral melt is thrown out from the second rotor in the form of a drop cascade. The main portion of that drop cascade being thrown out from the second rotor is arranged to be thrown toward the mantle surface of the first rotor, toward a second position downstream from said first position on the mantle surface. A portion of mineral melt is formed into fibres at the first rotor and blown off the rotor.