Title (en)

METHOD FOR REMOVING SOLIDS FROM A FIBRE SUSPENSION BY FLOTATION AND FLOTATION DEVICE FOR CARRYING OUT THE SAME

Title (de)

VERFAHREN ZUR ENTFERNUNG VON FESTSTOFFEN AUS EINER FASERSUSPENSION DURCH FLOTATION SOWIE FLOTATIONSVORRICHTUNG ZU SEINER DURCHFÜHRUNG

Title (fr)

PROCÉDÉ PERMETTANT DE RETIRER DES MATIÈRES SOLIDES D'UNE SUSPENSION DE FIBRES PAR FLOTTATION ET DISPOSITIF DE FLOTTATION PERMETTANT LA MISE EN OEUVRE DUDIT PROCÉDÉ

Publication

EP 2379797 A2 20111026 (DE)

Application

EP 09748115 A 20091105

Priority

• EP 2009064662 W 20091105
• DE 102008064271 A 20081220

Abstract (en)

[origin: WO2010069670A2] The invention relates to a method for removing solids from an aqueous fiber suspension (S) by means of gas bubbles (4), in particular from a waste paper suspension, wherein gas (6) is introduced into the fibre suspension (S) in at least one mixing device (1) and gas bubbles are formed. The gasified suspension (S') is taken from the mixing device (1) through an adjustable flow resistance, in particular a throttle (4), into a flotation tank (3), in which the separation of solids by flotation occurs. The method permits the air content of the gasified suspension (S') to be adjusted.

IPC 8 full level

D21B 1/32 (2006.01); B01F 3/04 (2006.01); B03D 1/14 (2006.01); D21C 5/02 (2006.01); D21F 1/70 (2006.01)

CPC (source: EP)

B03D 1/028 (2013.01); B03D 1/1456 (2013.01); B03D 1/247 (2013.01); D21B 1/327 (2013.01); D21F 1/70 (2013.01); Y02W 30/64 (2015.05)

Citation (search report)

See references of WO 2010069670A2

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DOCDB simple family (publication)

WO 2010069670 A2 20100624; WO 2010069670 A3 20100812; CN 102257211 A 20111123; DE 102008064271 A1 20100701; EP 2379797 A2 20111026

DOCDB simple family (application)

EP 2009064662 W 20091105; CN 200980151392 A 20091105; DE 102008064271 A 20081220; EP 09748115 A 20091105