IT7967959A0 - Procedimento per la separazione del l idrossido di alluminio nella produzione di allumina col processo bayer - Google Patents

Procedimento per la separazione del l idrossido di alluminio nella produzione di allumina col processo bayer

Info

Publication number
IT7967959A0
IT7967959A0 IT7967959A IT6795979A IT7967959A0 IT 7967959 A0 IT7967959 A0 IT 7967959A0 IT 7967959 A IT7967959 A IT 7967959A IT 6795979 A IT6795979 A IT 6795979A IT 7967959 A0 IT7967959 A0 IT 7967959A0
Authority
IT
Italy
Prior art keywords
alumina
separation
procedure
production
aluminum hydroxide
Prior art date
Application number
IT7967959A
Other languages
English (en)
Other versions
IT1118493B (it
Original Assignee
Sumitomo Aluminium Smelting Co
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 Sumitomo Aluminium Smelting Co filed Critical Sumitomo Aluminium Smelting Co
Publication of IT7967959A0 publication Critical patent/IT7967959A0/it
Application granted granted Critical
Publication of IT1118493B publication Critical patent/IT1118493B/it

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
    • 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
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
    • 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
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
    • C01F7/148—Separation of the obtained hydroxide, e.g. by filtration or dewatering

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
IT67959/79A 1978-05-08 1979-05-07 Procedimento per la separazione del l idrossido di alluminio nella produzione di allumina co processo bayer IT1118493B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53054803A JPS603005B2 (ja) 1978-05-08 1978-05-08 アルミン酸ソ−ダ溶液より析出水酸化アルミニウムを分離する方法

Publications (2)

Publication Number Publication Date
IT7967959A0 true IT7967959A0 (it) 1979-05-07
IT1118493B IT1118493B (it) 1986-03-03

Family

ID=12980888

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67959/79A IT1118493B (it) 1978-05-08 1979-05-07 Procedimento per la separazione del l idrossido di alluminio nella produzione di allumina co processo bayer

Country Status (8)

Country Link
US (1) US4201749A (it)
JP (1) JPS603005B2 (it)
AU (1) AU514212B2 (it)
CA (1) CA1097483A (it)
DE (1) DE2918520A1 (it)
FR (1) FR2425405A1 (it)
GB (1) GB2020642B (it)
IT (1) IT1118493B (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113184889A (zh) * 2021-03-22 2021-07-30 中国铝业股份有限公司 一种氧化铝生产中结晶草酸钠渣的综合利用方法
CN115282818A (zh) * 2022-08-18 2022-11-04 河津市炬华铝业有限公司 一种氢氧化铝制备生产用搅洗装置
CN116768254A (zh) * 2023-05-06 2023-09-19 中铝郑州有色金属研究院有限公司 一种两段分解过程中提高分解率和产品粒度的方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443416A (en) * 1983-04-18 1984-04-17 Kaiser Aluminum & Chemical Corporation Purification of bayer process liquors
US4595581A (en) * 1984-12-10 1986-06-17 Aluminum Company Of America Boehmite production by precipitation from sodium aluminate solution at elevated temperatures
US4999170A (en) * 1988-06-03 1991-03-12 Vereinigte Aluminum-Werke Aktiendesellschaft Method for removing sodium oxalate from caustic aluminate liquors
US5106599A (en) * 1990-02-06 1992-04-21 Nalco Chemical Company Alumina crystal growth additive
RU2175951C2 (ru) * 2000-02-25 2001-11-20 ОАО "Бокситогорский глинозем" Способ получения активного гидроксида алюминия
WO2002094715A1 (en) * 2001-05-18 2002-11-28 Beijing University Of Chemical Technology Ultrafine modified aluminium hydroxide and its preparation
RU2256616C2 (ru) * 2003-07-21 2005-07-20 Открытое акционерное общество "Сибирско-Уральская алюминиевая компания" Способ отделения гидроксида алюминия от раствора
CN106093019A (zh) * 2016-05-31 2016-11-09 贵州大学 一种分析铝酸钠溶液中有机物含量的方法
CN112047367B (zh) * 2020-09-09 2022-06-03 中国铝业股份有限公司 高活性氢氧化铝晶体、低锌氢氧化铝及其制备方法、氧化铝
CN112194160B (zh) * 2020-09-30 2021-06-29 洛阳中超新材料股份有限公司 一种超细氢氧化铝用铝酸钠溶液的脱色方法
CA3212166A1 (en) * 2022-02-15 2023-08-24 Obshchestvo S Ogranichennoy Otvetstvennost'yu "Obedinennaya Kompaniya Rusal Inzhenerno-Tekhnologicheskiy Tsentr" Method for the processing of bauxites for alumina production
CN116514152B (zh) * 2023-06-19 2025-06-03 山东南山铝业股份有限公司 一种液碱溶出铝土矿生产高白氢氧化铝微粉的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707669A (en) * 1951-02-06 1955-05-03 Kaiser Aluminium Chem Corp Alumina production
US2935376A (en) * 1957-04-08 1960-05-03 Kaiser Aluminium Chem Corp Process of precipitating alumina hydrate from a pregnant caustic aluminate liquor
US3372985A (en) * 1963-02-20 1968-03-12 Kaiser Aluminium Chem Corp Process for removing impurities from the precipitation system of the bayer process
US3486850A (en) * 1967-02-16 1969-12-30 Kaiser Aluminium Chem Corp Flash cooling of liquor during the continuous precipitation of alumina hydrate from bayer process liquor
US3649185A (en) * 1967-08-23 1972-03-14 Showa Denko Kk Method for removing impurities in the bayer process
US3838980A (en) * 1972-01-12 1974-10-01 Alcan Res & Dev Precipitation of bayer alumina trihydrate suitable for the manufacture of ceramic grade alumina of improved grindability
FR2317226A1 (fr) * 1975-07-07 1977-02-04 Alcan Res & Dev Perfectionnements a la production d'alumine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113184889A (zh) * 2021-03-22 2021-07-30 中国铝业股份有限公司 一种氧化铝生产中结晶草酸钠渣的综合利用方法
CN115282818A (zh) * 2022-08-18 2022-11-04 河津市炬华铝业有限公司 一种氢氧化铝制备生产用搅洗装置
CN116768254A (zh) * 2023-05-06 2023-09-19 中铝郑州有色金属研究院有限公司 一种两段分解过程中提高分解率和产品粒度的方法

Also Published As

Publication number Publication date
JPS54146299A (en) 1979-11-15
GB2020642B (en) 1982-08-25
DE2918520A1 (de) 1979-11-15
US4201749A (en) 1980-05-06
FR2425405B1 (it) 1981-02-13
DE2918520C2 (it) 1988-02-18
IT1118493B (it) 1986-03-03
JPS603005B2 (ja) 1985-01-25
GB2020642A (en) 1979-11-21
AU514212B2 (en) 1981-01-29
CA1097483A (en) 1981-03-17
FR2425405A1 (fr) 1979-12-07
AU4663879A (en) 1979-11-15

Similar Documents

Publication Publication Date Title
IT7967959A0 (it) Procedimento per la separazione del l idrossido di alluminio nella produzione di allumina col processo bayer
DE3486433D1 (de) Bayer-Verfahren zur Herstellung von Aluminiumhydroxid
IT1097877B (it) Processo per la preparazione di polivinilbutirrale con proprieta' migliorate
IT990533B (it) Processo per la decaffeinizzazione di caffe crudo
IT970123B (it) Filtri muniti di telai e processo per la loro preparazion
IT1179513B (it) Processo per la produzione di pellicole porose
IT1119644B (it) Procedimento per la produzione del trimetafosfato di alluminio nella forma b
IT1017280B (it) Processo per la preparazione di n vinilcarbonamidi secondarie
IT1166778B (it) Processo ed apparecchiatura per la produzione di nitruro di alluminio
IT1123574B (it) Processo per la produzione di diesterediammidi
IT1132211B (it) Processo per la produzione di composti di titanio
IT1048280B (it) Processo per la produzione di cuoroidrossidi di alluminio
IT1009631B (it) Processo per la preparazione di esteri isopropilici
BR7900845A (pt) Processo para producao de alumina
IT983209B (it) Metodo per la separazione di impurita per rimozione nella desolforazione di un efluente gasoso in un processo ad umido gesso calce
IT1008993B (it) Processo per la preparazione di esametilendiamina
IT1008887B (it) Processo per la produzione di lamine composite di alluminio
IT8050442A0 (it) Processo per la preparazione di anidride acetica
IT1040911B (it) Processo per la produzione diparticelle prose d alluminia idrata
IT1123187B (it) Processo per la preparazione di l-alfa-glicerilfosforilcolina
IT7919365A0 (it) Processo per la preparazione disolfonati di magnesio sovrabasificati.
IT1034770B (it) Processo per la preparazione di azocomposti di piu elevatapurezza
IT8050441A0 (it) Processo per la preparazione di anidride acetica
IT1026692B (it) Processo per la preparazione di poliglicerolo
IT1008995B (it) Processo per la preparazione di butindiolo