OA10684A - Reduction of impurities in bayer process alumina trihydrate - Google Patents

Reduction of impurities in bayer process alumina trihydrate Download PDF

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Publication number
OA10684A
OA10684A OA9800052A OA9800052A OA10684A OA 10684 A OA10684 A OA 10684A OA 9800052 A OA9800052 A OA 9800052A OA 9800052 A OA9800052 A OA 9800052A OA 10684 A OA10684 A OA 10684A
Authority
OA
OAPI
Prior art keywords
polymer
alumina trihydrate
trihydrate
solids
alumina
Prior art date
Application number
OA9800052A
Other languages
English (en)
Inventor
Alan S Rothenberg
Greg Flieg
Robert W Cole
Original Assignee
Cytec Tech Corp
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 Cytec Tech Corp filed Critical Cytec Tech Corp
Publication of OA10684A publication Critical patent/OA10684A/en

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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
    • 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)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
OA9800052A 1995-11-07 1998-05-07 Reduction of impurities in bayer process alumina trihydrate OA10684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US625495P 1995-11-07 1995-11-07

Publications (1)

Publication Number Publication Date
OA10684A true OA10684A (en) 2002-11-28

Family

ID=21720027

Family Applications (1)

Application Number Title Priority Date Filing Date
OA9800052A OA10684A (en) 1995-11-07 1998-05-07 Reduction of impurities in bayer process alumina trihydrate

Country Status (6)

Country Link
US (1) US5665244A (de)
EP (1) EP0859745A1 (de)
CN (1) CN1201440A (de)
AU (1) AU720125B2 (de)
OA (1) OA10684A (de)
WO (1) WO1997017293A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE149971T1 (de) * 1992-12-14 1997-03-15 Nalco Chemical Co Änderung der trihydrat-kristalle im bayer- verfahren
US5951955A (en) * 1995-11-07 1999-09-14 Cytec Technology Corp. Concentration of solids in the Bayer process
US5853677A (en) * 1996-04-26 1998-12-29 Cytec Technology Corp. Concentration of solids by flocculating in the Bayer process
GB9724032D0 (en) * 1997-11-13 1998-01-14 Allied Colloids Ltd Ore pelletisation
CN102268559A (zh) 2007-05-21 2011-12-07 奥贝特勘探Vspa有限公司 从铝土矿石中提取铝的工艺
AU2012231686B2 (en) 2011-03-18 2015-08-27 Aem Technologies Inc. Processes for recovering rare earth elements from aluminum-bearing materials
US9410227B2 (en) 2011-05-04 2016-08-09 Orbite Technologies Inc. Processes for recovering rare earth elements from various ores
WO2012162817A1 (en) 2011-06-03 2012-12-06 Orbite Aluminae Inc. Methods for preparing hematite
WO2013037054A1 (en) 2011-09-16 2013-03-21 Orbite Aluminae Inc. Processes for preparing alumina and various other products
RU2016104423A (ru) 2012-01-10 2018-11-22 Орбит Текнолоджис Инк. Способы обработки красного шлама
CA2862307C (en) 2012-03-29 2015-12-01 Orbite Aluminae Inc. Processes for treating fly ashes
BR112015000626A2 (pt) 2012-07-12 2017-06-27 Orbite Aluminae Inc processos para preparação de óxido de titânio e outros produtos variados
US9353425B2 (en) 2012-09-26 2016-05-31 Orbite Technologies Inc. Processes for preparing alumina and magnesium chloride by HCl leaching of various materials
CA2891427C (en) 2012-11-14 2016-09-20 Orbite Aluminae Inc. Methods for purifying aluminium ions
US9896366B2 (en) * 2014-02-26 2018-02-20 Ecolab Usa Inc. Alternative additives to enhance slurry dewatering
CN106830023A (zh) * 2017-02-08 2017-06-13 兰州理工大学 一种从铝灰中回收氧化铝的方法及该方法制备的氧化铝
CN106698487A (zh) * 2017-02-08 2017-05-24 兰州理工大学 一种从铝灰中回收氧化铝的除杂方法及该方法制备的氧化铝
CN109678185A (zh) * 2018-12-18 2019-04-26 杭州科创有色金属研究有限公司 一种用于氧化铝生产中粗液精制的装置及其方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981600A (en) * 1952-12-01 1961-04-25 Kaiser Aluminium Chem Corp Process of purifying caustic aluminate liquors
US3345344A (en) * 1961-09-08 1967-10-03 Nopco Chem Co Process for conversion of amidoxime polymers to polyhydroxamic acids using aqueous hydrochloric acid solutions
US3607140A (en) * 1968-11-19 1971-09-21 Aluminum Co Of America Preparation of alumina of improved purity by iron removal
US3860688A (en) * 1973-07-17 1975-01-14 Kaiser Aluminium Chem Corp Production of high purity alumina hydrate
GB2070108B (en) * 1980-02-14 1984-02-08 Elf Aquitaine Drilling and/or completion muds
FR2533572A1 (fr) * 1982-09-28 1984-03-30 Elf Aquitaine Perfectionnements a la preparation de polymeres a fonctions hydroxamiques, nouveaux polymeres obtenus et leurs applications
FR2536383A1 (fr) * 1982-11-24 1984-05-25 Elf Aquitaine Procede et produit pour l'empechement de l'entartrage par des eaux
FR2538717B1 (fr) * 1982-12-31 1987-09-11 Elf Aquitaine Procede et produit pour l'inhibition du depot d'argiles dans de l'eau
FR2551429B2 (fr) * 1983-09-05 1985-10-18 Pechiney Aluminium Procede de production d'un trihydroxyde d'aluminium de granulometrie grosse et reguliere
US4560541A (en) * 1984-03-15 1985-12-24 Atlantic Richfield Company Production of low silica content, high purity alumina
US4767540A (en) * 1987-02-11 1988-08-30 American Cyanamid Company Polymers containing hydroxamic acid groups for reduction of suspended solids in bayer process streams
US5128420A (en) * 1987-02-26 1992-07-07 Massachusetts Institute Of Technology Method of making hydroxamic acid polymers from primary amide polymers
US4902751A (en) * 1988-05-24 1990-02-20 American Cyanamid Company Preparation of modified acrylamide polymers
US5133874A (en) * 1990-12-24 1992-07-28 American Cyanamid Company Removal of humate from bayer alumina liquors
CA2105333A1 (en) * 1992-09-14 1994-03-15 Robert P. Mahoney Trihydrate clarification aid for the bayer process
US5451329A (en) * 1994-03-10 1995-09-19 Cytec Technology Corp. Dewatering of alumina trihydrate
US5534235A (en) * 1995-09-05 1996-07-09 Nalco Chemical Company Polymers containing phosphonic acid groups for the treatment of red mud in the Bayer process
US5601726A (en) * 1994-06-06 1997-02-11 Cytec Technology Corp. Hydroxameted polymers in the bayer process to reduce solids
US5539046A (en) * 1994-11-04 1996-07-23 Cytec Technology Corp. Blends of hydroxamated polymer emulsions with polyacrylate emulsions

Also Published As

Publication number Publication date
CN1201440A (zh) 1998-12-09
AU7482896A (en) 1997-05-29
US5665244A (en) 1997-09-09
AU720125B2 (en) 2000-05-25
WO1997017293A1 (en) 1997-05-15
EP0859745A1 (de) 1998-08-26

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