Filter aid

Liquid purification or separation – Filter – Material

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B01D 3904

Patent

active

045100551

ABSTRACT:
This invention provides a non-fibrous combustible filter aid for vacuum pre-coat filter units which is effective to maintain a filter bed coating on rotary filter drums just sufficiently porous to pass the liquid of a slurry while retaining the slurry solids thereon and is capable of being scraped off the bed in thin film form with the slurry solids thereon. The filter aid comprises relatively non-compressible non-fibrous granular charcoal or nut shell particles having a dry bulk density from about 0.3 to about 0.6 grams per cubic centimeter, a particle density of about 1.4 to 1.7 grams per cubic centimeter and a particle size range of 30 to 125 microns. The filter aid of this invention is capable of being burned with the solids deposited thereon to recover the heat value thereof or to dispose of the solids, is free from silicates or other non-combustible ingredients, and is devoid of fibers which will interfere with the proper operation of the filter unit.

REFERENCES:
patent: 3635341 (1972-01-01), Davis
patent: 3780861 (1973-12-01), Hirs
patent: 3870632 (1975-03-01), Erskine
patent: 3900395 (1975-08-01), Hirs
patent: 4197205 (1980-04-01), Hirs
patent: 4238334 (1980-12-01), Halbfoster
patent: 4315824 (1982-02-01), Kalolkiewicz et al.
Johns-Manville, "Celite Filter Aids", Brochure FA-84A-RWC.
Eagle-Picher Celatom "Diatomite Filter Aids", Brochure A-500.
Grefco, Inc. "Diacalite Perlite Filter Aid", Technical Bulletin P-11-E.
Eagle Picher, "Pre-co-Floc", Cellulose Fiber Filter Aids Provide Superior Performance, Bulletin, Form C-100.
Johns-Manville, "Celite", Technical Data Sheet FF-238A.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Filter aid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filter aid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter aid will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1168458

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.