Global Patent Index - EP 2509709 A4

EP 2509709 A4 20160106 - METHOD AND APPARATUS TO CREATE UNIFORM MIXING IN CONNECTION WITH A HYDROMETALURGICAL PROCESS

Title (en)

METHOD AND APPARATUS TO CREATE UNIFORM MIXING IN CONNECTION WITH A HYDROMETALURGICAL PROCESS

Title (de)

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG GLEICHFÖRMIGER MISCHUNGEN IN VERBINDUNG MIT EINEM HYDROMETALLURGIEVERFAHREN

Title (fr)

PROCÉDÉ ET APPAREIL DESTINÉS À CRÉER UN MÉLANGE UNIFORME EN RELATION AVEC UN PROCÉDÉ HYDROMÉTALLURGIQUE

Publication

EP 2509709 A4 20160106 (EN)

Application

EP 10835537 A 20101208

Priority

  • FI 20096296 A 20091208
  • FI 2010000074 W 20101208

Abstract (en)

[origin: WO2011070218A1] A method and equipment for separating solids from slurry containing a suspension of liquid and fine solid particles. An amount of liquid flocculant is added to the slurry that is considerably smaller than the amount of slurry. The slurry and flocculant are mixed with a mixer (1) to bring about contact between the fine solid particles and the flocculant in order to bind the fine solid particles to each other as floes. The solids and liquid of the flocculated slurry are separated from each other with a separation device (2) in a separate process stage after the flocculation stage. The flocculant is gently mixed into the slurry with a helical rotor mixer (1) at a low mixing intensity, giving the mixture in the cylindrical tank of the mixer a vertical macrocirculation flow and simultaneously creating in it smaller turbulent microflows without essentially subjecting the mixture to shear forces in order to avoid breaking up the floes. The method and equipment are extremely practical in the treatment of the fine tailings generated in oil sands refining.

IPC 8 full level

B01F 23/53 (2022.01); B01D 21/01 (2006.01); B01D 21/08 (2006.01); B01D 21/28 (2006.01); B01F 27/1145 (2022.01); B01F 27/86 (2022.01); B01F 27/922 (2022.01); C02F 1/34 (2006.01); C02F 1/52 (2006.01); C02F 11/147 (2019.01); C10G 1/00 (2006.01)

CPC (source: EP FI US)

B01D 21/01 (2013.01 - EP); B01D 21/08 (2013.01 - EP); B01D 21/286 (2013.01 - EP); B01F 23/53 (2022.01 - EP); B01F 27/1145 (2022.01 - EP); B01F 27/11451 (2022.01 - EP); B01F 27/86 (2022.01 - EP); B01F 27/92 (2022.01 - FI); B01F 27/922 (2022.01 - EP); C02F 11/147 (2018.12 - EP FI US); C10G 1/00 (2013.01 - EP US); C02F 1/34 (2013.01 - EP); C02F 1/52 (2013.01 - EP); C02F 2301/024 (2013.01 - EP)

Citation (search report)

Designated contracting state (EPC)

AL 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 RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2011070218 A1 20110616; AU 2010329807 A1 20120621; AU 2010329807 A8 20120719; BR 112012013894 A2 20160503; CA 2780852 A1 20110616; CL 2012001477 A1 20121116; CN 102665887 A 20120912; CN 102665887 B 20150624; EA 022724 B1 20160229; EA 201290405 A1 20130130; EP 2509709 A1 20121017; EP 2509709 A4 20160106; FI 123597 B 20130731; FI 124092 B 20140314; FI 20096296 A0 20091208; FI 20096296 A 20110609; FI 20100318 A0 20100916; FI 20100318 A 20110609; PE 20130300 A1 20130322; WO 2011070219 A1 20110616; WO 2011070219 A8 20111117; ZA 201203911 B 20130424

DOCDB simple family (application)

FI 2010000073 W 20101208; AU 2010329807 A 20101208; BR 112012013894 A 20101208; CA 2780852 A 20101208; CL 2012001477 A 20120606; CN 201080055633 A 20101208; EA 201290405 A 20101208; EP 10835537 A 20101208; FI 20096296 A 20091208; FI 2010000074 W 20101208; FI 20100318 A 20100916; PE 2012000773 A 20101208; ZA 201203911 A 20120529