Deinking of printed paper by agglomeration process

Details Deinking of printed paper by agglomeration process Deinking of printed paper by agglomeration process

D - Textiles, Paper

21

B

D21B 1/08 (2006.01) B01F 17/00 (2006.01) B07B 9/00 (2006.01) D21B 1/32 (2006.01) D21C 5/02 (2006.01)

Patent

CA 2149235

Deinking of impact and nonimpact printed is accomplished by repulping (1) the printed paper in an alkali aqueous medium containing a deinking composition comprising one or mono nonionic surfactants and/or alkanols. The presence of the deinking composition causes ink particles to agglomerate, which are removed from the aqueous medium by size and density separation (3, 4, 5 and 6). The invention provides an agglomeration method with high ink removal from all of impact and nonimpact printed paper.

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