BRPI0515534A - aperfeiçoamento no processo bayer de fabricação de triidrato de alumina, o dito aperfeiçoamento tendo como objeto a separação do licor de aluminato e dos resìduos insolúveis - Google Patents

aperfeiçoamento no processo bayer de fabricação de triidrato de alumina, o dito aperfeiçoamento tendo como objeto a separação do licor de aluminato e dos resìduos insolúveis

Info

Publication number
BRPI0515534A
BRPI0515534A BRPI0515534-7A BRPI0515534A BRPI0515534A BR PI0515534 A BRPI0515534 A BR PI0515534A BR PI0515534 A BRPI0515534 A BR PI0515534A BR PI0515534 A BRPI0515534 A BR PI0515534A
Authority
BR
Brazil
Prior art keywords
improvement
separation
hydrocyclone
liquor
alumina trihydrate
Prior art date
Application number
BRPI0515534-7A
Other languages
English (en)
Inventor
Jean-Marc Rousseaux
Gerard Pignol
Yves Magnan
Original Assignee
Pechiney Aluminium
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 Pechiney Aluminium filed Critical Pechiney Aluminium
Publication of BRPI0515534A publication Critical patent/BRPI0515534A/pt

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
    • B01D21/01—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
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • 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
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85954—Closed circulating system

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Cyclones (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

"APERFEIçOAMENTO NO PROCESSO BAYER DE FABRICAçãO DE TRIIDRATO DE ALUMINA, O DITO APERFEIçOAMENTO TENDO COMO OBJETO A SEPARAçãO DO LICOR DE ALUMINATO E DOS RESìDUOS INSOLúVEIS". Processo de fabricação de triidrato de alumina por ataque alcalino da bauxita de acordo com o processo Bayer, no qual a separação do licor de aluminato e dos resíduos insolúveis é realizada com o auxílio de um dispositivo de separação líquido-sólido (E; W2; DC), caracterizado pelo fato de que, para acelerar e melhorar a separação do licor de aluminato de sódio e dos resíduos insolúveis no seio da suspensão (21a; 41; 230<39>) que contém o dito licor e os ditos resíduos e que alimenta o dito ou é proveniente do dito dispositivo de separação líquido-sólido, faz-se passar pelo menos parcialmente a dita suspensão (21a; 41; 230<39>) por um hidrociclone (H1; H21; H22; H3). Em uma primeira modalidade, é utilizado pelo menos um hidrociclone a montante do decantador-espessador como clarificador do licor supersaturado. Em uma segunda modalidade, é utilizado pelo menos um hidrociclone como espessador das lamas de resíduos insolúveis. Em uma terceira modalidade, é utilizado um hdrociclone em combinação com o decantador de caustificação.
BRPI0515534-7A 2004-09-21 2005-09-19 aperfeiçoamento no processo bayer de fabricação de triidrato de alumina, o dito aperfeiçoamento tendo como objeto a separação do licor de aluminato e dos resìduos insolúveis BRPI0515534A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0409946A FR2875495B1 (fr) 2004-09-21 2004-09-21 Perfectionnement au procede bayer de fabrication de trihydrate d'alumine, ledit perfectionnement portant sur la separation de la liqueur d'aluminate et des residus insolubles
PCT/FR2005/002309 WO2006032770A1 (fr) 2004-09-21 2005-09-19 Perfectionnement au procede bayer de fabrication de trihydrate d’alumine, ledit perfectionnement portant sur la separation de la liqueur d’aluminate et des residus insolubles

Publications (1)

Publication Number Publication Date
BRPI0515534A true BRPI0515534A (pt) 2008-07-29

Family

ID=34949417

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0515534-7A BRPI0515534A (pt) 2004-09-21 2005-09-19 aperfeiçoamento no processo bayer de fabricação de triidrato de alumina, o dito aperfeiçoamento tendo como objeto a separação do licor de aluminato e dos resìduos insolúveis

Country Status (10)

Country Link
US (1) US7807119B2 (pt)
EP (1) EP1791788B1 (pt)
CN (1) CN101023029B (pt)
AT (1) ATE451327T1 (pt)
AU (1) AU2005286404B2 (pt)
BR (1) BRPI0515534A (pt)
DE (1) DE602005018234D1 (pt)
ES (1) ES2338032T3 (pt)
FR (1) FR2875495B1 (pt)
WO (1) WO2006032770A1 (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2934852B1 (fr) * 2008-08-06 2011-06-24 Alcan Int Ltd Perfectionnement au procede bayer de production de trihydrate d'alumine, ledit procede comprenant une etape dans laquelle la liqueur sursaturee est filtree a haute temperature avant decomposition
CN101648087B (zh) * 2008-08-12 2011-12-21 沈阳铝镁设计研究院有限公司 氟化铝生产中尾气洗涤液沉淀物回收工艺及系统
CN103096990B (zh) * 2010-07-09 2016-06-08 力拓艾尔坎国际有限公司 用于分离浆料的絮凝剂添加率及混合速率
EP2886178A1 (en) * 2013-12-20 2015-06-24 Rio Tinto Alcan International Limited Process and installation for producing alumina trihydrate by alkaline digestion of bauxite ore
FR3036395B1 (fr) * 2015-05-20 2018-11-23 Soletanche Freyssinet Unite de traitement d'une boue et procede correspondant
US11193989B2 (en) 2018-07-27 2021-12-07 Allegro Microsystems, Llc Magnetoresistance assembly having a TMR element disposed over or under a GMR element
CN110508038B (zh) * 2019-08-09 2024-03-12 浙江省天正设计工程有限公司 一种含亚胺系列产品的硫酸溶液连续化液固分离的方法及装置
US11217626B2 (en) * 2019-08-30 2022-01-04 Allegro Microsystems, Llc Dual tunnel magnetoresistance (TMR) element structure
CN113262561B (zh) * 2021-07-05 2023-03-10 沈阳铝镁设计研究院有限公司 一种细种子料浆浓缩装置及方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4328094A (en) * 1980-02-08 1982-05-04 Peck Albert C Apparatus and process for the beneficiation, washing, elutriation and cleaning of particulate solids and recovery of chemical values
GB8906500D0 (en) * 1989-03-21 1989-05-04 Shell Int Research Process for the production of aluminium hydroxide from bauxite
FR2718982B1 (fr) * 1994-04-22 1996-06-14 Pretraitement Regional Centre Procédé de traitement des boues résiduaires minérales ou analogues et appareillage de mise en Óoeuvre dudit procédé.
DE19903011A1 (de) * 1999-01-26 2000-08-03 Akw Apparate Verfahren Verfahren zum Trennen und Entsorgen des sandigen Anteils des bei der Verarbeitung von Bauxit mittels heißer Natronlauge entstehenden Rotschlamms sowie Anordnung zur Durchführung des Verfahrens
US6340033B2 (en) * 1999-03-15 2002-01-22 Alcan International Limited Transfer of shear-thinning slurries
US6077486A (en) * 1999-03-25 2000-06-20 Cytec Technology Corp. Process for purifying alumina by mixing a Bayer process stream containing sodium aluminate with amidoxime polymer to reduce the level of iron
CN1186259C (zh) * 2002-11-12 2005-01-26 中国铝业股份有限公司 一种拜尔法生产氧化铝的方法

Also Published As

Publication number Publication date
DE602005018234D1 (de) 2010-01-21
ATE451327T1 (de) 2009-12-15
AU2005286404B2 (en) 2010-07-29
FR2875495B1 (fr) 2006-10-27
AU2005286404A1 (en) 2006-03-30
ES2338032T3 (es) 2010-05-03
EP1791788B1 (fr) 2009-12-09
US20070243118A1 (en) 2007-10-18
CN101023029B (zh) 2011-08-17
WO2006032770A1 (fr) 2006-03-30
US7807119B2 (en) 2010-10-05
CN101023029A (zh) 2007-08-22
FR2875495A1 (fr) 2006-03-24
EP1791788A1 (fr) 2007-06-06

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2260 DE 29/04/2014.