METHOD FOR PRODUCING INSULATING MATERIALS FROM MINERAL FIBERS

摘要

The invention relates to a method for producing insulating materials from mineral fibers, especially from glass and/or rock wool. A silicate melt is produced in a melting unit, especially a cupola melting furnace, and is disintegrated in a disintegration device to preferably microfine fibers. Preferably, a binder and/or proofing agent is added to the fibers and they a re placed on a conveyor means in the form of an unwoven material. The aim of th e invention is to improve said method and said melt in such a manner that the method can be carried out at lower costs or that an inexpensive melt is provided by using inexpensive starting materials. To this end, the silicate melt is at least partially produced from catalysts derived from oil refining that are especially no longer useful.