Froth flotation process for deinking wastepaper using multiflow

Details Froth flotation process for deinking wastepaper using multiflow Froth flotation process for deinking wastepaper using multiflow

1997-04-14

1998-11-24

Silverman, Stanley S.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

209552, 2102211, 2102212, 210 86, D21C 502

Patent

active

058401563

ABSTRACT:
A mixture of air and paper stock made from recycled paper from which the ink particles have been chemically released is injected into a cylindrical processing vessel. Added surfactants create a foam from the air as it rises through the stock and cause the ink particles to adhere to the air bubbles, resulting in a foam containing a concentrated fraction of the ink particles with some included fibers. The foam rises to the top of the vessel, and carries with it ink particles. Additional air injection ports can be used to increase the amount of foam generated and the amount of ink removed. Flow of stock and foam from the vessel can be controlled by adjusting valves on the stock and foam outlets. Flotation sensors allow the foam head to be maintained at the stock level by controlling the rate foam is withdrawn through the foam outlets.

REFERENCES:
patent: 4145286 (1979-03-01), Bereskin et al.
patent: 4190522 (1980-02-01), Tra
patent: 4563274 (1986-01-01), Rothon et al.
patent: 4618430 (1986-10-01), Favret, Jr. et al.
patent: 5273624 (1993-12-01), Chamberlain et al.

Affiliated with

Also associated with

Rating

Froth flotation process for deinking wastepaper using multiflow does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Froth flotation process for deinking wastepaper using multiflow , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Froth flotation process for deinking wastepaper using multiflow will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1698414