Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms
Reexamination Certificate
2008-05-21
2011-10-11
Daniels, Matthew (Department: 1741)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
C501S036000
Reexamination Certificate
active
08033140
ABSTRACT:
Magnesium silicate mineral wools having a relatively high liquidus temperature of at least about 1400° C. and to methods for the production thereof are provided. The methods of the present invention comprise melting a magnesium silicate feedstock (e.g., comprising a serpentine or olivine ore) having a liquidus temperature of at least about 1400° C. to form a molten magnesium silicate, and subsequently fiberizing the molten magnesium silicate to produce a magnesium silicate mineral wool. In one embodiment, the magnesium silicate feedstock contains iron oxide (e.g., up to about 12% by weight). Preferably, the melting is performed in the presence of a reducing agent to produce an iron alloy, which can be separated from the molten ore. Useful magnesium silicate feedstocks include, without limitation, serpentine and olivine ores. Optionally, silicon dioxide can be added to the feedstock to lower the liquidus temperature thereof.
REFERENCES:
patent: 4365984 (1982-12-01), Gee
patent: 4830989 (1989-05-01), Trivedi et al.
patent: 5045506 (1991-09-01), Dube et al.
patent: 2002/0027316 (2002-03-01), Ishikawa et al.
O'Connor William K.
Rush Gilbert E.
Soltau Glen F.
Belyaev Yana
Daniels Matthew
Lally Brian J.
Lucas John T.
Potts James B.
LandOfFree
Method for the production of mineral wool and iron from... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the production of mineral wool and iron from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the production of mineral wool and iron from... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4294015