ES2137564T3 - Procedimiento de eliminacion del hierro en las soluciones de aluminato sodico resultantes del ataque alcalino de bauxita de monohidrato de alumina (metahidroxido de aluminio). - Google Patents

Procedimiento de eliminacion del hierro en las soluciones de aluminato sodico resultantes del ataque alcalino de bauxita de monohidrato de alumina (metahidroxido de aluminio).

Info

Publication number
ES2137564T3
ES2137564T3 ES95943250T ES95943250T ES2137564T3 ES 2137564 T3 ES2137564 T3 ES 2137564T3 ES 95943250 T ES95943250 T ES 95943250T ES 95943250 T ES95943250 T ES 95943250T ES 2137564 T3 ES2137564 T3 ES 2137564T3
Authority
ES
Spain
Prior art keywords
aluminum
attack
suspension
degrees
sodium aluminate
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
ES95943250T
Other languages
English (en)
Inventor
Jean Deville
Jean-Michel Lamerant
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 France SAS
Original Assignee
Aluminium Pechiney SA
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 Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Application granted granted Critical
Publication of ES2137564T3 publication Critical patent/ES2137564T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C01F7/04—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
    • C01F7/0633—Digestion characterised by the use of additives
    • 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
    • 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

Landscapes

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

Abstract

PROCEDIMIENTO DE ELIMINACION DEL HIERRO EN LAS SOLUCIONES DE ALUMINATO DE SODIO SOBRESATURADAS RESULTANTES DEL ATAQUE ALCALINO SEGUN EL PROCEDIMIENTO BAYER DE BAUXITA QUE CONTIENE MONOHIDRATO DE ALUMINA, QUE TIENE SUCESIVAMENTE LAS ETAPAS DE TRITURACION ,. EVENTUALMENTE DE DESILICATACION EN PRESENCIA DE UNA FRACCION DE LICOR DESCOMPENSADA, Y DE ATAQUE A UNA TEMPERATURA SUPERIOR A 200 (GRADOS) C, COMPRENDIDA GENERALMENTE ENTRE 240 Y 270 (GRADOS) C DE DICHA BAUXITA TRITURADA Y EVENTUALMENTE DESILICATADA POR LA FRACCION RESTANTE DEL LICOR DESCOMPENSADO, PARA SOLUBILIZAR EL HIDRATO DE ALUMINATO Y FORMAR AL FINAL DEL ATAQUE UNA SUSPENSION DEL RESIDUO INSOLUBLE O LODOS ROJOS EN EL LICOR SOBRESATURADO DE ALUMINATO DE SODIO QUE, TRAS EL ENFRIAMIENTO Y DILUCION, SE DECANTA PARA SEPARAR LOS LODOS O RESIDUO INSOLUBLE DEL LICOR INSATURADO DESTINADO TRAS LA FILTRACION A SER DESCOMPUESTO EN PRESENCIA DE UN CEBO CARACTERIZADO PORQUE AL FINAL DEL ATAQUE, A LO LARGO DEL ENFRIAMIENTO DE LA SUSPENSION POR REDUCCION PROGRESIVA DE LA PRESION EN LOS REACTORES, SE INYECTA EN DICHA SUSPENSION A UNA TEMPERATURA SUPERIOR A 140 (GRADOS) C UNA PEQUEÑA CANTIDAD DE UN COMPUESTO QUE CONTIENEN CALCIO.
ES95943250T 1994-12-22 1995-12-20 Procedimiento de eliminacion del hierro en las soluciones de aluminato sodico resultantes del ataque alcalino de bauxita de monohidrato de alumina (metahidroxido de aluminio). Expired - Lifetime ES2137564T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9415727A FR2728556B1 (fr) 1994-12-22 1994-12-22 Procede d'elimination du fer dans les liqueurs d'aluminate de sodium issues de l'attaque alcaline de bauxite a monohydrate d'alumine

Publications (1)

Publication Number Publication Date
ES2137564T3 true ES2137564T3 (es) 1999-12-16

Family

ID=9470296

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95943250T Expired - Lifetime ES2137564T3 (es) 1994-12-22 1995-12-20 Procedimiento de eliminacion del hierro en las soluciones de aluminato sodico resultantes del ataque alcalino de bauxita de monohidrato de alumina (metahidroxido de aluminio).

Country Status (10)

Country Link
US (1) US5628972A (es)
EP (1) EP0748294B1 (es)
CN (1) CN1085621C (es)
AU (1) AU691716B2 (es)
DE (1) DE69511528T2 (es)
ES (1) ES2137564T3 (es)
FR (1) FR2728556B1 (es)
GR (1) GR3031748T3 (es)
HU (1) HU225042B1 (es)
WO (1) WO1996019410A1 (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPN808296A0 (en) * 1996-02-15 1996-03-07 Queensland Alumina Limited Bauxite treatment
UA50757C2 (uk) 1996-12-20 2002-11-15 Поханг Айрон & Стил Ко., Лтд Спосіб підвищення виходу вуглепаління (варіанти)
FR2758544B1 (fr) * 1997-01-22 1999-02-26 Pechiney Aluminium Procede ameliore de traitement de bauxites riches en monohydrate d'alumine
CN1865146B (zh) * 2005-05-18 2010-07-28 贵阳铝镁设计研究院 氧化铝生产中含泥原矿除砂与排粗的方法
CN1865141B (zh) * 2005-05-18 2010-10-27 贵阳铝镁设计研究院 提高氧化铝生产中溶出液Rp的方法
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
EP2676932B1 (de) * 2012-06-20 2015-03-25 Pleason Ventures LTD Verfahren zur komplexen Verarbeitung von Bauxit
CN102976374B (zh) * 2012-12-01 2014-11-12 中南大学 一种氧化铝生产过程中铁矿物的转化方法
AU2014280959B2 (en) * 2014-12-24 2020-10-22 Pleason Ventures Ltd Process For The Complex Processing Of Bauxite
US9441283B2 (en) 2014-12-24 2016-09-13 Pleason Ventures Ltd. Process for complex processing of bauxite
CN108031142A (zh) * 2017-12-13 2018-05-15 上海合全药物研发有限公司 一种简化的利用湿磨来制备大量微晶种的装置及方法
CN109179461B (zh) * 2018-09-19 2021-03-23 孝义市泰兴铝镁有限公司 一种低钠拟薄水铝石及其制备方法、装置
CN111410219B (zh) * 2020-03-26 2022-11-11 重庆市九龙万博新材料科技有限公司 一种铝土矿的溶出工艺
CN113441519A (zh) * 2021-06-28 2021-09-28 广西田东锦鑫化工有限公司 一种拜耳法赤泥脱碱及碱回收工艺

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796789A (en) * 1972-04-07 1974-03-12 Aluminum Co Of America Removal of iron from sodium aluminate liquor
SU510974A1 (ru) * 1974-01-04 1988-08-23 Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой,Магниевой И Электродной Промышленности Способ получени глинозема
IE41148B1 (en) * 1974-05-23 1979-10-24 Alcan Res & Dev Improvement in the extraction of alumina from bauxite
US3966874A (en) * 1975-05-14 1976-06-29 Reynolds Metals Company Extraction of alumina from bauxite ores
US4483830A (en) * 1981-09-10 1984-11-20 Comalco Limited Production of alumina
FR2546872B1 (fr) * 1983-06-03 1986-01-03 Inst Aljuminievoi Procede de transformation d'aluminosilicates bruts en alumine, produits sodiques et ciment
US4518571A (en) * 1984-02-27 1985-05-21 Vsesojuzny Nauchno-Issledovatelsky I Proektny Institut Aljuminievo Magnievoi I Elektrodnoi Promyshlennosti Process for desilication of aluminate liquors in the production of alumina
EP0188268A3 (de) * 1985-01-17 1990-01-31 Alcoa Chemie GmbH Verfahren zur Herstellung von Aluminiumhydroxid mit niedrigem Gehalt an Verunreinigungen, insbesondere an Eisen, und hohem Weissgrad
DE3501350A1 (de) * 1985-01-17 1986-07-17 Alcoa Chemie GmbH, 6700 Ludwigshafen Verfahren zur herstellung von aluminiumhydroxid mit niedrigem gehalt an verunreinigungen, insbesondere an eisen, und hohem weissgrad

Also Published As

Publication number Publication date
HUT76868A (en) 1997-12-29
GR3031748T3 (en) 2000-02-29
DE69511528D1 (de) 1999-09-23
HU225042B1 (en) 2006-05-29
US5628972A (en) 1997-05-13
EP0748294A1 (fr) 1996-12-18
HU9602275D0 (en) 1996-10-28
FR2728556B1 (fr) 1997-01-31
WO1996019410A1 (fr) 1996-06-27
CN1085621C (zh) 2002-05-29
AU4450996A (en) 1996-07-10
DE69511528T2 (de) 2000-03-09
CN1141620A (zh) 1997-01-29
AU691716B2 (en) 1998-05-21
FR2728556A1 (fr) 1996-06-28
EP0748294B1 (fr) 1999-08-18

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