D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
9/36.8
D21C 11/00 (2006.01) C02F 1/52 (2006.01) C02F 1/54 (2006.01) C02F 1/72 (2006.01) C02F 9/00 (2006.01)
Patent
CA 1307879
A method for purifying resin-containing waste liquor in the manufacture of cellulose pulps A B S T R A C T The present invention solves the problem of managing resin-containing waste liquors within the cellulose pulp industry. The invention relates to a method for purifying resin-containing waste liquor in the manufacture of cellu- lose pulp, in which method a pH-adjusting chemical is, when necessary. added to resin-containing waste liquor removed from the cellulose pulps, so that the pH of the waste liquor will lie within the pH range 1-7, and in which a water- -soluble organic polymer is added to the waste liquor in the form of a forwardly moving liquid stream. The method is characterized by dividing up the requisite amount of polymer into part quantities which are introduced into the liquid stream on at least two occasions, by subjecting the liquid stream to a pronounced shearing and/or turbulent treatment process, and by subsequently separating agglomerated resin from the waste liquor.
586061
Engstrom Bengt Thomas
Nordberg Cecilia Maria
Ohlund Jan
Pinzke Thomas
Sanneskog Owe
Boliden Aktiebolag
Macrae & Co.
Mo Och Domsjo Aktiebolag
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