METHOD FOR MANUFACTURING FIBROUS HEAT-INSULATING ARTICLES Russian patent published in 1998 - IPC

FIELD: production of building materials. SUBSTANCE: first, slurry consisting of inorganic, preferably, basalt, fibers and clayey binder is prepared, followed by spreading slurry as a layer all over surface of continuously moving net-type conveyor. Slurry is moulded to assume shape of blank and dewatered by filtering under vacuum conditions. Finally, blank is subjected to heat treatment. Novelty of the method is in that 5-7-% clayey binder is used to prepare slurry; moulding and shaping of layer forming blank are effected by ramming slurry into calibrating channel defined by horizontal surface of net-type conveyor and belt of overheat blank-shaping conveyor; killed slurry containing uniformly distributed fibers is used for moulding and shaping. EFFECT: higher efficiency. 1 dwg, 1 tbl