C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 37/04 (2006.01) C03B 37/095 (2006.01) C03C 13/06 (2006.01) C22C 32/00 (2006.01)
Patent
CA 2121572
47 Abstract A method for producing mineral wool of a material which is highly fluid at an elevated liquidus temperature in parti- cular above 1,200°C, with a viscosity of less than 5,000 poises at liquidus temperature, is proposed wherein the mol- ten mineral material, after having destroyed all nuclei of crystallization, is supplied into a spinner (1') the peri- pheral wall (19) of which comprises a multiplicity of ori- fices with small diameters wherethrough said molten material is centrifuged to form filaments which, in a given case, are subjected to a supplementary attenuating effect of a pre- ferably hot gas flow flowing along said peripheral wall (19) of said spinner (1') and generated by a concentric annular external burner (13). If fiberization of such a material is effected in the traditional way, a great proportion of unfi- berized particles in the product will result. To avoid this, the spinner temperature in ongoing, continuous operation is maintained at a balanced value which is lower than or equal to the temperature at which the viscosity of the molten mi- neral material is 100 poises, and higher than the crystalli- zation temperature in undercooled state of said material to be fiberized.
Battigelli Jean
Bernard Jean Luc
Berthier Guy
Furtak Hans
Vignesoult Serge
Isover Saint-Gobain
Sim & Mcburney
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