ARRANGEMENT AND METHOD IN THE MANUFACTURE OF MINERAL WOOL AND FIBERISING APPARATUS

The invention relates to a method for the manufacture of mineral fibres. Mineral melt is led to a first rotating fiberising rotor in a fiberising apparatus comprising at least two fiberising rotors, and mineral melt is thrown from the mantle surface of the first rotating rotor to the mantle surface of a second rotating rotor, and from there successively to the mantle surfaces of possible following rotors. The melt is formed to mineral fibres at the active peripheries of the rotating fiberising rotors, and the formed mineral fibres are blown-off from the fiberising rotors of the fiberising apparatus towards a collecting member by means of fibre blow-off means arranged at the active peripheries of the rotors. Binder is applied onto the mineral fibres during their formation by means of a binder applying member arranged at the active peripheries of the rotors. A number of separate treatment nozzles are arranged directly on the outside of the blow-off means or in the immediate vicinity of the blow-off means, and a first number of treatment nozzles is fed with a first binder and second number of treatment nozzles is fed with a second binder.