Producing mineral wool using centrifugal spinner with supplementary hot gas flow
Номер патента: NZ248379A
Опубликовано: 21-12-1995
Автор(ы): Daniel Sainte-Foi, Guy Berthier, Hans Furtak, Jean Battigelli
Принадлежит: Saint Gobain Isover
Опубликовано: 21-12-1995
Автор(ы): Daniel Sainte-Foi, Guy Berthier, Hans Furtak, Jean Battigelli
Принадлежит: Saint Gobain Isover
Реферат: Mineral material, particularly of the basalt type, is fiberized by internal centrifuging in a spinner (1') having a peripheral wall (19) with a multiplicity of orifices through which the melt may emanate into the environment where a hot gas blast attenuates the melt cones emanating from the orifices to fibers. As such mineral material has a high melting point or liquidus temperature, and low viscosity at the liquidus temperature, a high proportion of unfiberized particles is likely to be produced. However, the production of mineral wool with good fiber fineness and largely free of unfiberized particles surprisingly is possible if the cone lengths and the configuration of the gas flows generated around the spinner are such that the majority of the filament forming cones emanating from the spinner orifices intersect the isotherm corresponding to a viscosity of 100 poises, or otherwise reach into a zone cooled down to a temperature corresponding to a viscosity of more than 100 poises. In practice, such a configuration of the gas flows is produced by an outer annular blower (24) complementing the external annular burner (13) which produces jets of cool air so as to bring low-temperature isotherms in close vicinity of the peripheral wall (19) of the spinner (1') where the tips of the cones reach into such cool zone so as to increase the viscosity at the tip of the cones to avoid breakage of the filament to be attenuated.
Method and apparatus for the production of mineral wool, and mineral wool thereby produced
Номер патента: CA2121573C. Автор: Hans Furtak,Jean Battigelli,Daniel Sainte-Foi,Guy Berthier. Владелец: Saint Gobain Isover SA France. Дата публикации: 1999-10-26.