Title:
Froth Flotation Deinking Process For Paper Recycling
Froth Flotation Deinking Process For Paper Recycling
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Abstract
The present invention provides a froth flotation process for the separation of paper and wood fibers from printed and copying inks and other contaminants during the recycling of paper. A liquid solution containing a frothing agent is applied from the top of a froth flotation device, preferably in the form of a spray, to the upper surface or portion of an aqueous pulp slurry present in the device, or of a froth phase produced in the device, prior to or during the froth flotation process.
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Date Issued
3/2/1999
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Patent