Title: Method for regulating whiteness for removal of printing ink in deinking installations and deinking installation comprising a flotation cell for removal of printing ink
Application Number: 200480031806 Application Date: 2004.10.27
Publication Number: 1875145 Publication Date: 2006.12.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: D21B1/32,B03B13/02,B03D1/14
Applicant(s) Name: Siemens AG Address:
Inventor(s) Name: Dinkel Markus, Goetz Reinhold, Palm Rainer, Runkle
Attorney & Agent: shao yali li xiaoshu
Abstract:
     The invention relates to a method for regulating whiteness for removal of printing ink in deinking installations, whereby printing ink particles in a fiber suspension are removed in a flotation cell (20) by means of gas bubbles. Said removal is carried out by removing the foam produced in a foam gutter (11), the amount of foam removed being adjusted. The method comprises the steps of measuring (24) a feed whiteness of the fiber suspension added; determining an adjustable variable (SRN) as a function of the feed whiteness and a predetermined desired value for an acceptor whiteness of the removed fiber suspension; adjusting the quantity of the removed foam subject to the adjustable variable (SRN).
Time: 12