BR9300494A - Processo de eliminacao do oxalato de sodio em pelo menos uma fracao da solucao ou licor de aluminato de sodio retirada no ciclo bayer de producao de alumina a partir de bauxita - Google Patents

Processo de eliminacao do oxalato de sodio em pelo menos uma fracao da solucao ou licor de aluminato de sodio retirada no ciclo bayer de producao de alumina a partir de bauxita

Info

Publication number
BR9300494A
BR9300494A BR9300494A BR9300494A BR9300494A BR 9300494 A BR9300494 A BR 9300494A BR 9300494 A BR9300494 A BR 9300494A BR 9300494 A BR9300494 A BR 9300494A BR 9300494 A BR9300494 A BR 9300494A
Authority
BR
Brazil
Prior art keywords
bauxite
elimination
sodium
fraction
aluminate solution
Prior art date
Application number
BR9300494A
Other languages
English (en)
Inventor
Benoit Cristol
Yves Michael Perret
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 BR9300494A publication Critical patent/BR9300494A/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
    • C01F7/473—Removal of organic compounds, e.g. sodium oxalate
    • 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
    • C01F7/0606—Making-up the alkali hydroxide solution from recycled spent liquor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
BR9300494A 1992-02-05 1993-02-05 Processo de eliminacao do oxalato de sodio em pelo menos uma fracao da solucao ou licor de aluminato de sodio retirada no ciclo bayer de producao de alumina a partir de bauxita BR9300494A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9201481A FR2686872B1 (fr) 1992-02-05 1992-02-05 Procede d'elimination de l'oxalate de sodium des solutions d'aluminate de sodium du cycle bayer.

Publications (1)

Publication Number Publication Date
BR9300494A true BR9300494A (pt) 1993-08-10

Family

ID=9426498

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9300494A BR9300494A (pt) 1992-02-05 1993-02-05 Processo de eliminacao do oxalato de sodio em pelo menos uma fracao da solucao ou licor de aluminato de sodio retirada no ciclo bayer de producao de alumina a partir de bauxita

Country Status (10)

Country Link
EP (1) EP0555163B1 (pt)
CN (1) CN1033379C (pt)
AU (1) AU648215B2 (pt)
BR (1) BR9300494A (pt)
DE (1) DE69300121T2 (pt)
ES (1) ES2071533T3 (pt)
FR (1) FR2686872B1 (pt)
GR (1) GR3015945T3 (pt)
HR (1) HRP930104B1 (pt)
OA (1) OA09774A (pt)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU669576B2 (en) * 1992-11-17 1996-06-13 Bhp Billiton Worsley Alumina Pty Ltd Hydrate precipitation and oxalate removal
FR2736908B1 (fr) * 1995-07-20 1997-08-29 Pechiney Aluminium Procede d'epuration des solutions d'aluminate de sodium contenant de l'oxalate de sodium
FR2785895B1 (fr) * 1998-11-16 2001-01-19 Pechiney Aluminium Procede d'epuration des liqueurs d'aluminate de sodium contenant de l'oxalate de sodium permettant d'augmenter la quantite d'hydrate d'alumine produit
AUPP933499A0 (en) * 1999-03-19 1999-04-15 Worsley Alumina Pty Ltd Process for the removal of oxalate and/or sulphate from bayer liquors
AU768730B2 (en) * 1999-03-19 2004-01-08 South32 Worsley Alumina Pty Ltd Process for the removal of oxalate and/or sulphate from bayer liquors
FR2794449B1 (fr) * 1999-06-04 2001-10-19 Pechiney Aluminium Procede d'epuration des liqueurs d'aluminate de sodium contenant de l'oxalate de sodium permettant de valoriser les residus
AUPR437001A0 (en) 2001-04-11 2001-05-17 Worsley Alumina Pty Ltd Process for the removal of anionic impurities from caustic aluminate solutions
FR2860782B1 (fr) * 2003-10-10 2006-09-29 Pechiney Aluminium Procede pour reduire l'encrassement des echangeurs thermiques d'un circuit bayer
CN101462114B (zh) * 2007-12-17 2010-10-13 贵阳铝镁设计研究院 一种氧化铝生产中换热器中草酸钠结晶的处理方法
CN101734694B (zh) * 2008-11-17 2012-10-03 贵阳铝镁设计研究院有限公司 采用超浓缩法从拜尔法溶液中排除草酸钠和碳酸盐的方法
CN102489244A (zh) * 2011-11-24 2012-06-13 中国铝业股份有限公司 一种过滤铝酸盐溶液的助滤剂及其使用方法
CN102716616A (zh) * 2012-06-21 2012-10-10 中国铝业股份有限公司 一种铝酸钠溶液叶滤过程的助滤剂
CN103342377B (zh) * 2013-07-23 2015-08-05 山东南山铝业股份有限公司 一种铝酸钠溶液石灰苛化除草酸钠的方法
CN103818935A (zh) * 2014-01-13 2014-05-28 赵凿元 一种从含钾铝酸钠溶液中分离氧化钾的方法
CN105731511B (zh) * 2016-01-19 2017-10-20 中国铝业股份有限公司 一种从分解原液中脱除草酸钠的方法
CN107572570A (zh) * 2017-09-15 2018-01-12 臧海伟 一种从拜耳法洗液中脱除草酸盐的方法
CN110203954A (zh) * 2019-03-20 2019-09-06 昆明冶金研究院 一种氧化法脱除氧化铝母液有机物的方法
CN113149048B (zh) * 2021-03-26 2022-08-26 马朝扬 一种氧化铝生产过程中草酸钠固体废渣的处理方法
CN113912096B (zh) * 2021-10-22 2023-07-11 中铝矿业有限公司 拜耳法种分母液草酸盐脱除工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370017A (en) * 1963-07-30 1968-02-20 Du Pont Microcrystalline corundum powder, sols thereof, and processes for preparing both
HU166060B (pt) * 1973-04-09 1975-01-28
CA1285373C (fr) * 1984-06-25 1991-07-02 Jean Fabre Purification des solutions d'aluminate de sodium du cycle bayer par elimination d'oxalate de sodium
AT389884B (de) * 1986-10-03 1990-02-12 Treibacher Chemische Werke Ag Verfahren zur herstellung eines gesinterten schleifmaterials auf der basis von alpha-al2o3
JP2639121B2 (ja) * 1989-08-25 1997-08-06 三菱マテリアル株式会社 微細α―アルミナ粉末の製造方法

Also Published As

Publication number Publication date
DE69300121T2 (de) 1995-08-31
HRP930104A2 (en) 1994-08-31
HRP930104B1 (en) 1998-10-31
CN1076427A (zh) 1993-09-22
AU648215B2 (en) 1994-04-14
ES2071533T3 (es) 1995-06-16
EP0555163A1 (fr) 1993-08-11
FR2686872A1 (fr) 1993-08-06
DE69300121D1 (de) 1995-06-01
GR3015945T3 (en) 1995-07-31
CN1033379C (zh) 1996-11-27
FR2686872B1 (fr) 1994-06-03
EP0555163B1 (fr) 1995-04-26
AU3219793A (en) 1993-08-12
OA09774A (fr) 1993-11-30

Similar Documents

Publication Publication Date Title
BR9300494A (pt) Processo de eliminacao do oxalato de sodio em pelo menos uma fracao da solucao ou licor de aluminato de sodio retirada no ciclo bayer de producao de alumina a partir de bauxita
BR8801621A (pt) Processo para reduzir a percentagem de cristais de tri-hidrato de alumina de pequeno tamanho,durante a cristalizacao a partir de um licor do processo bayer
BR9000421A (pt) Processo bayer para produzir alunina a partir de bauxita
BR9006293A (pt) Processos para tratar uma pasta de lama vermelha produzida em um processo bayer e para recuperar valores de alumina a partir de bauxita pelo processo bayer,e pasta de lama vermelha do processo bayer
BR9303028A (pt) Processo para produzir pelo menos dois produtos a partir de um local de producao
GB8907995D0 (en) Recovery of alumina trihydrate in the bayer process
BR8601223A (pt) Processo de decomposicao de um licor de aluminato de sodio supersaturado de alumina,e dispositivo para sua realizacao
BR8503020A (pt) Processo de purificacao de pelo menos uma fracao de um licor do ciclo bayer
HUT54320A (en) Process for producing aluminium hydroxide from bauxite
BR9606529A (pt) Processo de purificação das soluções de aluminato de sódio que contêm oxalato de sódio
GR861373B (en) Process for continuous alumine production from monohydrated bauxites according to the bayer process
AU3594389A (en) Method for removing sodium oxalate from caustic aluminate liquors
BR9605948A (pt) Processo de tratamento de bauxita com trihidrato de alumina de baixo teor de silica reativa
BR9505597A (pt) Processo para a precipitação de tri-hidróxido de alumínio a partir de uma solução supersaturada de aluminato de sódio
FR2758544B1 (fr) Procede ameliore de traitement de bauxites riches en monohydrate d'alumine
BR9106066A (pt) Processo para a precipitacao de hidroxido de aluminio a partir de licor de processo de bayer
BR9205965A (pt) Processo para o controle da concentração de oxalato de sódio em soluções de aluminato de sódio
ITMI911426A0 (it) Processo per la preparazione di benzotiazepine per ciclizzazione con acidi fosfonici
OA07487A (fr) Procédé de production d'un trihydroxyde d'aluminium de grosse granulométrie
BR9306780A (pt) Processo para extração de alumina a partir da bauxita
BR8905475A (pt) Aperfeicoamento em processo para produzir alumina a partir de bauxitas gibbsiticas
GR3031490T3 (en) Process for the precipitation of aluminum trihydroxide from a supersaturated sodium aluminate solution
FR2715153B1 (fr) Procédé de traitement de bauxite à trihydrate d'alumine.
BR8903858A (pt) Processo continuo em dois estagios para producao de aluminas de alta pureza
BA96130B1 (bs) Postopek za kontinuirni razkroj prenasicene luznice natrijevega aluminata v glinico

Legal Events

Date Code Title Description
FA7 Application withdrawn (art. 18 par. 1 of law 5772/71) - being contrary to morals, good customs and public security, order and health