Title:
【発明の名称】ミネラルウールの製造方法及び製造装置、並びにそれによって製造されたミネラルウール
Document Type and Number:
Japanese Patent JP2752256
Kind Code:
B2
Abstract:
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.
Inventors:
BATEIGERI JAN
BERUTEIA GII
FURUTAKU HANSU
SANNFUOA DANIERU
BERUTEIA GII
FURUTAKU HANSU
SANNFUOA DANIERU
Application Number:
JP50580294A
Publication Date:
May 18, 1998
Filing Date:
August 20, 1992
Export Citation:
Assignee:
IZOBEERU SAN GOBAN
International Classes:
C03B37/00; C03B37/04; C03C13/06; D01D5/08; D01F9/08; B28B1/00; (IPC1-7): C03B37/04; D01F9/08; D01D5/08
Other References:
【文献】米国特許3928009(US,A)
【文献】英国特許895540(GB,B)
【文献】仏国特許1284035(FR,A)
【文献】英国特許895540(GB,B)
【文献】仏国特許1284035(FR,A)
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)