Densification of aerated powders using positive pressure

Details Densification of aerated powders using positive pressure Densification of aerated powders using positive pressure

2005-01-18

2005-01-18

Scherbel, David A. (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

Processes

Plural materials

C141S012000, C141S073000, C141S080000

Reexamination Certificate

active

06843282

ABSTRACT:
A process for increasing the bulk density of an aerated powder is provided. The powder is placed in a container. The container is then closed and the gas pressure within the container is increased to a level above atmospheric pressure and at a rate sufficient to cause the powder to compact before a substantial portion of said pressurization gas diffuses into said powder. In one embodiment, the process is utilized to increase the bulk density of an aerated, free-flowing titanium dioxide pigment. Apparatus for carrying out the process is also provided.

REFERENCES:
patent: 3195586 (1965-07-01), Vogt
patent: 3260285 (1966-07-01), Vogt
patent: 3586066 (1971-06-01), Brown
patent: 3788368 (1974-01-01), Geng et al.
patent: 4145045 (1979-03-01), Pocklington
patent: 4859401 (1989-08-01), Murase et al.
patent: 4859640 (1989-08-01), Newkirk
patent: 5109893 (1992-05-01), Derby
patent: 5137665 (1992-08-01), Tarry
patent: 5169572 (1992-12-01), Matthews
patent: 5234037 (1993-08-01), Derby
patent: 5244019 (1993-09-01), Derby
patent: 5275215 (1994-01-01), Derby
patent: 5513682 (1996-05-01), Derby
patent: 5518048 (1996-05-01), Derby
patent: 5531252 (1996-07-01), Derby et al.
patent: 5538053 (1996-07-01), Derby
patent: 5711215 (1998-01-01), Sextl et al.
patent: 5749401 (1998-05-01), Shinya et al.
patent: 6139617 (2000-10-01), Halko et al.
patent: 6207131 (2001-03-01), Magyar et al.
patent: 2052339 (1992-07-01), None
patent: 0 590 523 (1994-04-01), None
patent: 987165 (1965-03-01), None
Joseph Marinelli, “Why We Hate Titanium Dioxide,” Undated, Solids Handling Technologies, Internet www.solidshandlingtech.com/articletitanium.htm.
Lee Won Joon, “Re: Want to increase the bulk density?”, Aug. 6, 2001, Powder and Bulk Dot Com Materials Handling Help Forum, Internet www.powderandbulk.com/_forum2/000000bb.htm.
Lyn Bates, “Re: Want to increase the bulk density?”, Jun. 16, 2001, Powder and Bulk Dot Com Materials Handling Help Forum, Internet www.powderandbulk.com/_forum2/000000bf.htm.
2001, Model BG-700 De-Aerator, International Headquarters B.A.G. Equipment by Premier Tech, Internet www.premiertech.com/bagequip/main/htdocs/specialty/deaerator/index/html.
2001, SEP-500 Series Deaerator Bagger, Premier Tech, Internet www.premiertech.com/unites/ptp/prod/sep500.htm.
Undated, Untitled document, ajusystem.com, Internet @ www.ajusystem.com/english/total/data2—9.html.
Undated, Specification Guide Spherical Disc Valves, Gemcovalve.com, Internet www.gemcovalve.com/prod/pmtspec/air4.html.

Affiliated with

Also associated with

Rating

Densification of aerated powders using positive pressure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Densification of aerated powders using positive pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Densification of aerated powders using positive pressure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3431650