Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2005-11-01
2005-11-01
Bos, Steven (Department: 1754)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
Reexamination Certificate
active
06960336
ABSTRACT:
A method of producing alumina having a low soda content and excellent sintering properties includes the steps of adding a soda removal agent to alumina source material and calcining the alumina source material in a calciner (2), using a dust collector (5) to collect calcined alumina source material dust contained in the exhaust gas, discharging a portion of the collected dust out of the system, slurrying another portion of the collected dust in a slurrifier (10) while controlling slurry pH, washing and filtering the slurried dust and recirculating it back to the calciner, recirculating still another portion of the collected dust together with a mineralizing agent to the calciner, and removing the low soda alumina after the calcination.
REFERENCES:
patent: 3106452 (1963-10-01), Watson et al.
patent: 3175883 (1965-03-01), Lindsay et al.
patent: 6203773 (2001-03-01), Easley et al.
patent: 281265 (1988-09-01), None
patent: 728700 (1996-08-01), None
patent: 06-329412 (1994-11-01), None
patent: 07-041318 (1995-02-01), None
patent: 10-167725 (1998-06-01), None
patent: 11-049515 (1999-02-01), None
Bos Steven
Showa Denko K.K.
Sughrue & Mion, PLLC
LandOfFree
Method of producing low soda alumina, low soda alumina... 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 of producing low soda alumina, low soda alumina..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing low soda alumina, low soda alumina... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3461760