ES2042219T3 - Procedimiento y aparato para la decantacion de suspensiones. - Google Patents

Procedimiento y aparato para la decantacion de suspensiones.

Info

Publication number
ES2042219T3
ES2042219T3 ES199090311049T ES90311049T ES2042219T3 ES 2042219 T3 ES2042219 T3 ES 2042219T3 ES 199090311049 T ES199090311049 T ES 199090311049T ES 90311049 T ES90311049 T ES 90311049T ES 2042219 T3 ES2042219 T3 ES 2042219T3
Authority
ES
Spain
Prior art keywords
liquid
section
suspension
level
region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES199090311049T
Other languages
English (en)
Inventor
Peter Francis Bagatto
Bernard Paul Dancose
Pierre Charles Harrington
Gaston Marcel Jean
Marc Aurele Lepage
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Application granted granted Critical
Publication of ES2042219T3 publication Critical patent/ES2042219T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/009—Heating or cooling mechanisms specially adapted for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/32—Density control of clear liquid or sediment, e.g. optical control ; Control of physical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters

Abstract

UN PROCESO Y APARATO UTILES PARA DECANTAR SUSPENSIONES A TEMPERATURAS EN Y POR ENCIMA DEL PUNTO DE EBULLICION ATMOSFERICO DEL LIQUIDO DE LA SUSPENSION. EL APARATO TIENE LA FORMA DE UN DEPOSITO ALARGADO VERTICALMENTE DE RELACION DE GRAN ALTURA RESPECTO DEL DIAMETRO QUE TIENE UNA SECCION SUPERIOR CILINDRICA (10) Y UNA SECCION INFERIOR (12) Y QUE ESTA DISPUESTO PARA RELLENARSE HASTA UN NIVEL DE LIQUIDO PREDETERMINADO (13) EN UNA REGION SUPERIOR DE DICHA SECCION CILINDRICA; MEDIOS DE ALIMENTACION (17) PARA ALIMENTAR UNA SUSPENSION EN LA SECCION CILINDRICA EN UNA REGION CENTRAL ENTRE EL FONDO DEL DEPOSITO Y DICHO NIVEL DE LIQUIDO, INCLUYENDO DICHOS MEDIOS DE ALIMENTACION MEDIOS PARA INYECTAR LA ALIMENTACION BAJO UNA PRESION POSITIVA SUFICIENTE PARA SUPERAR LA CABEZA HIDROSTATICA DEL LIQUIDO EN EL DEPOSITO POR ENCIMA DE LA ENTRADA DE ALIMENTACION; MEDIOS (20) PARA AÑADIR UN FLOCULANTE A LA ALIMENTACION DE SUSPENSION; MEDIOS DE SALIDA DE LIQUIDO (14) EN UNA REGION SUPERIOR DE LA SECCION CILINDRICAEN O POR DEBAJO DE DICHO NIVEL DE LIQUIDO PARA RETIRAR EL LIQUIDO CLARIFICADO; MEDIOS DE DESCARGA DE SOLIDOS (30) EN EL FONDO DE DICHO DEPOSITO; MEDIOS (22,23) PARA CONTROLAR UN INTERFAZ DE LIQUIDO CLARIFICADO DE LECHADA EN UN NIVEL PREDETERMINADO EN UNA REGION INFERIOR DE DICHA PORCION CILINDRICA POR DEBAJO DE LA ENTRADA DE ALIMENTACION Y MEDIOS DE REJILLA GIRATORIOS (24) EN LA SECCION DE FONDO ADAPTADOS PARA REMOLDEAR LOS SOLIDOS SEDIMENTADOS Y EXPONER CONTINUAMENTE LAS SUPERFICIES RENOVADAS. ES PARTICULARMENTE UTIL PARA CLARIFICAR LICOR CAUSTICO QUE CONTENGA RESIDUOS DE BARRO ROJO DEL PROCESO DE BAYER.
ES199090311049T 1989-10-13 1990-10-09 Procedimiento y aparato para la decantacion de suspensiones. Expired - Lifetime ES2042219T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42126889A 1989-10-13 1989-10-13

Publications (1)

Publication Number Publication Date
ES2042219T3 true ES2042219T3 (es) 1993-12-01

Family

ID=23669862

Family Applications (1)

Application Number Title Priority Date Filing Date
ES199090311049T Expired - Lifetime ES2042219T3 (es) 1989-10-13 1990-10-09 Procedimiento y aparato para la decantacion de suspensiones.

Country Status (8)

Country Link
EP (1) EP0422893B1 (es)
AU (1) AU623837B2 (es)
BR (1) BR9005136A (es)
CA (1) CA2027519A1 (es)
DE (1) DE69002045T2 (es)
ES (1) ES2042219T3 (es)
IE (1) IE64656B1 (es)
OA (1) OA09268A (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407561A (en) * 1993-05-07 1995-04-18 Alcan International Limited Pressure decanter
AUPM654094A0 (en) * 1994-06-29 1994-07-21 Alcoa Of Australia Limited Thickener mud gauge (conductivity)
SE520068C2 (sv) * 2000-03-01 2003-05-20 Itt Mfg Enterprises Inc Sätt och anordning för behandling av vätskor
FR2846319B1 (fr) * 2002-10-25 2004-12-10 Pechiney Aluminium Procede d'attaque de la bauxite ameliorant la filtrabilite des boues en sortie d'attaque
CA2829049C (en) 2011-03-18 2014-12-02 Orbite Aluminae Inc. Processes for recovering rare earth elements from aluminum-bearing materials
WO2012149642A1 (en) 2011-05-04 2012-11-08 Orbite Aluminae Inc. Processes for recovering rare earth elements from various ores
RU2013157943A (ru) 2011-06-03 2015-07-20 Орбит Элюминэ Инк. Способ получения гематита
JP2014526431A (ja) 2011-09-16 2014-10-06 オーバイト アルミナ インコーポレイテッド アルミナ及び様々な他の生成物の調製プロセス
US9023301B2 (en) 2012-01-10 2015-05-05 Orbite Aluminae Inc. Processes for treating red mud
AU2013203808B2 (en) 2012-03-29 2016-07-28 Orbite Aluminae Inc. Processes for treating fly ashes
WO2014008586A1 (en) 2012-07-12 2014-01-16 Orbite Aluminae Inc. Processes for preparing titanium oxide and various other products
BR112015006536A2 (pt) 2012-09-26 2017-08-08 Orbite Aluminae Inc processos para preparar alumina e cloreto de magnésio por lixiviação com hcl de vários materiais.
EP2920114A4 (en) 2012-11-14 2016-03-02 Orbite Aluminae Inc PROCESS FOR PURIFYING ALUMINUM IONS

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2095546A (en) * 1935-10-02 1937-10-12 Int Smelting & Refining Co Treatment of chemical pulp
US4226714A (en) * 1978-12-27 1980-10-07 The Anaconda Company Thickener control system
US4222879A (en) * 1979-03-12 1980-09-16 W. R. Grace & Co. Settling clarifier
ATE39679T1 (de) * 1983-11-28 1989-01-15 Mueller Johann Ag Kieswerk Behaelter und anlage zum klaeren von mit feststoffen beladenen fluessigkeiten.
US4545902A (en) * 1984-09-17 1985-10-08 Nalco Chemical Company Flocculants for bauxite (red mud)
CA1286480C (en) * 1986-02-28 1991-07-23 Peter F. Bagatto Method of and apparatus for thickening red muds derived from bauxite and similar slurries
GB8824176D0 (en) * 1988-10-14 1988-11-23 Allied Colloids Ltd Recovery of alumina from bauxite

Also Published As

Publication number Publication date
IE64656B1 (en) 1995-08-23
AU6454490A (en) 1991-04-18
EP0422893A1 (en) 1991-04-17
OA09268A (en) 1992-08-31
DE69002045D1 (de) 1993-07-29
BR9005136A (pt) 1991-09-17
DE69002045T2 (de) 1993-09-30
EP0422893B1 (en) 1993-06-23
IE903666A1 (en) 1991-04-24
AU623837B2 (en) 1992-05-21
CA2027519A1 (en) 1991-04-14

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