BRPI0511191A - aperfeiçoamento no processo bayer de produção de trihidrato de alumina por ataque alcalino de bauxita, esse processo comportando uma etapa de pré-dessilicatação - Google Patents

aperfeiçoamento no processo bayer de produção de trihidrato de alumina por ataque alcalino de bauxita, esse processo comportando uma etapa de pré-dessilicatação

Info

Publication number
BRPI0511191A
BRPI0511191A BRPI0511191-9A BRPI0511191A BRPI0511191A BR PI0511191 A BRPI0511191 A BR PI0511191A BR PI0511191 A BRPI0511191 A BR PI0511191A BR PI0511191 A BRPI0511191 A BR PI0511191A
Authority
BR
Brazil
Prior art keywords
attack
liquor
bauxite
bayer
alumina trihydrate
Prior art date
Application number
BRPI0511191-9A
Other languages
English (en)
Inventor
Eric Tizon
Clotilde Fryns
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 BRPI0511191A publication Critical patent/BRPI0511191A/pt

Links

Classifications

    • 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
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
    • 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
    • C01F7/0613—Pretreatment of the minerals, e.g. grinding
    • 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
    • C01F7/062—Digestion

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Nutrition Science (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

APERFEIçOAMENTO NO PROCESSO BAYER DE PRODUçãO DE TRIHIDRATO DE ALUMINA POR ATAQUE ALCALINO DE BAUXITA, ESSE PROCESSO COMPORTANDO UMA ETAPA DE PRé-DESSILICATAçãO. Processo Bayer, comportando a moagem (L, B), depois o ataque (N2, A) dessa bauxita por colocação em contato com um licor de aluminato de sódio (20b, 120b). O ataque levando à formação de uma suspensão (3a, 103) que é em seguida tratada para separar os resíduos insolúveis (5a,105a) do licor de aluminato de sódio. O licor é em seguida decomposto (D), depois reciclado como licor de ataque (20, 120), após ter sido separado do trihidrato de alumina (11, 111) precipitado no decorrer da decomposição e concentrado por evaporação (E). O processo compreende um tratamento de pré-dessilicatação (P) no decorrer do qual a bauxita moída é, antes do ataque, colocada em contato com uma solução sódica aquosa, caracterizado pelo fato de se utilizar para esse tratamento de pré-dessilicatação uma solução sódica aquosa (30, 130) cujo teor em carbonatos, em sulfatos e eventualmente em cloretos, expresso em percentagem em relação à concentração em soda cáustica, é inferior à metade do teor em impurezas correspondentes do licor decomposto (8,108).
BRPI0511191-9A 2004-05-18 2005-05-11 aperfeiçoamento no processo bayer de produção de trihidrato de alumina por ataque alcalino de bauxita, esse processo comportando uma etapa de pré-dessilicatação BRPI0511191A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0405405A FR2870535B1 (fr) 2004-05-18 2004-05-18 Perfectionnement au procede bayer de production de trihydrate d'alumine par attaque alcaline de bauxite, ledit procede comportant une etape de predessilicatation
PCT/FR2005/001177 WO2005123591A1 (fr) 2004-05-18 2005-05-11 Perfectionnement au procede bayer de production de trihydrate d'alumine par attaque alcaline de bauxite, ledit procede comportant une etape de predessilicatation

Publications (1)

Publication Number Publication Date
BRPI0511191A true BRPI0511191A (pt) 2007-12-04

Family

ID=34945589

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0511191-9A BRPI0511191A (pt) 2004-05-18 2005-05-11 aperfeiçoamento no processo bayer de produção de trihidrato de alumina por ataque alcalino de bauxita, esse processo comportando uma etapa de pré-dessilicatação

Country Status (8)

Country Link
US (1) US7704471B2 (pt)
EP (1) EP1751059A1 (pt)
CN (1) CN1956925B (pt)
AU (1) AU2005254281B2 (pt)
BR (1) BRPI0511191A (pt)
FR (1) FR2870535B1 (pt)
UA (1) UA91977C2 (pt)
WO (1) WO2005123591A1 (pt)

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CN101842504B (zh) 2007-05-21 2012-11-14 奥贝特铝业有限公司 从铝土矿石中提取铝和铁的工艺
CN101671041B (zh) * 2008-09-09 2011-07-27 中铝国际技术发展有限公司 一种氧化铝熔出后的蒸发方法及装置
US8029752B2 (en) * 2009-04-06 2011-10-04 Nalco Company Approach in controlling DSP scale in bayer process
US9416020B2 (en) 2009-09-25 2016-08-16 Nalco Company Surfactant based small molecules for reducing aluminosilicate scale in the bayer process
US8545776B2 (en) * 2009-09-25 2013-10-01 Nalco Company Reducing aluminosilicate scale in the Bayer process
US8282834B2 (en) 2009-09-25 2012-10-09 Nalco Company Di- and mono-alkoxysilane functionalized polymers and their application in the Bayer process
US9487408B2 (en) 2009-09-25 2016-11-08 Nalco Company Reducing aluminosilicate scale in the bayer process
JP2014508863A (ja) 2011-03-18 2014-04-10 オーバイト アルミナ インコーポレイテッド アルミニウム含有材料から希土類元素を回収する方法
US9410227B2 (en) 2011-05-04 2016-08-09 Orbite Technologies Inc. Processes for recovering rare earth elements from various ores
EP2714594A4 (en) 2011-06-03 2015-05-20 Orbite Aluminae Inc PROCESS FOR PRODUCING HEMATITE
CN102259903B (zh) * 2011-06-20 2013-06-05 中国铝业股份有限公司 降低氧化铝拜耳流程溶液中碳酸钠含量的方法
US9382600B2 (en) 2011-09-16 2016-07-05 Orbite Technologies Inc. Processes for preparing alumina and various other products
JP6025868B2 (ja) 2012-01-10 2016-11-16 オーバイト アルミナ インコーポレイテッドＯｒｂｉｔｅ Ａｌｕｍｉｎａｅ Ｉｎｃ． 赤泥を処理するプロセス
AU2013203808B2 (en) 2012-03-29 2016-07-28 Aem Technologies Inc. Processes for treating fly ashes
RU2597096C2 (ru) 2012-07-12 2016-09-10 Орбит Алюминэ Инк. Способы получения оксида титана и различных других продуктов
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.
BR112015011049A2 (pt) 2012-11-14 2017-07-11 Orbite Aluminae Inc métodos para purificação de íons de alumínio
CN104291383B (zh) * 2013-07-16 2016-08-10 中国科学院过程工程研究所 一种高铁三水铝石型铝土矿综合利用的方法
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
US10427950B2 (en) 2015-12-04 2019-10-01 Ecolab Usa Inc. Recovery of mining processing product using boronic acid-containing polymers
FR3072956B1 (fr) * 2017-10-31 2024-03-01 Amber Dev Procede de traitement de bauxite
AU2019412507A1 (en) * 2018-12-27 2021-08-12 Companhia Brasileira De Alumínio Aluminium recovery method
CN109850929B (zh) * 2018-12-31 2021-03-16 贵州博汇联润铝业有限公司 一种种分槽稀释原矿矿浆制备氢氧化铝微粉方法
FR3095433A1 (fr) * 2019-04-29 2020-10-30 Ib2 Procede de traitement de residus d’enrichissement physique de bauxite
CN111592022B (zh) * 2020-04-20 2023-05-12 中铝山东新材料有限公司 一种拟薄水铝石的生产方法
US20230330971A1 (en) 2020-06-08 2023-10-19 Eastman Chemical Company Multilayer resilient flooring article
CN113716589A (zh) * 2021-10-09 2021-11-30 贵州华锦铝业有限公司 一种拜耳法氧化铝脱硫脱碳协同处理的方法及其系统
CN113856507B (zh) * 2021-10-18 2024-04-02 中铝矿业有限公司 一种进口铝土矿矿浆配制装置及方法

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US3481705A (en) * 1964-08-31 1969-12-02 Kaiser Aluminium Chem Corp Predigestion of low-silica bauxite
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HU203789B (en) * 1988-02-08 1991-09-30 Pfizer Process for producing polycyclic acidic ether-type antibiotica of anticoccidial and growth-stimulating activity
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FR2758544B1 (fr) * 1997-01-22 1999-02-26 Pechiney Aluminium Procede ameliore de traitement de bauxites riches en monohydrate d'alumine

Also Published As

Publication number Publication date
FR2870535A1 (fr) 2005-11-25
CN1956925B (zh) 2012-04-11
AU2005254281A1 (en) 2005-12-29
FR2870535B1 (fr) 2007-02-16
AU2005254281B2 (en) 2010-07-29
US7704471B2 (en) 2010-04-27
EP1751059A1 (fr) 2007-02-14
WO2005123591A1 (fr) 2005-12-29
US20070178041A1 (en) 2007-08-02
UA91977C2 (ru) 2010-09-27
CN1956925A (zh) 2007-05-02

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