DE68902625T2 - Abtrennung von rotschlamm aus bayer-prozess-laugen. - Google Patents

Abtrennung von rotschlamm aus bayer-prozess-laugen.

Info

Publication number
DE68902625T2
DE68902625T2 DE8989310550T DE68902625T DE68902625T2 DE 68902625 T2 DE68902625 T2 DE 68902625T2 DE 8989310550 T DE8989310550 T DE 8989310550T DE 68902625 T DE68902625 T DE 68902625T DE 68902625 T2 DE68902625 T2 DE 68902625T2
Authority
DE
Germany
Prior art keywords
separation
bayer process
red sludge
lye
process lye
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 - Fee Related
Application number
DE8989310550T
Other languages
English (en)
Other versions
DE68902625D1 (de
Inventor
Gillian Mary Moody
Christine Anne Rushforth
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.)
Ciba Specialty Chemicals Water Treatments Ltd
Original Assignee
Allied Colloids Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10645236&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE68902625(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Allied Colloids Ltd filed Critical Allied Colloids Ltd
Application granted granted Critical
Publication of DE68902625D1 publication Critical patent/DE68902625D1/de
Publication of DE68902625T2 publication Critical patent/DE68902625T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C01F7/46—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
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud
    • C01F7/0653—Separation of the insoluble residue, e.g. of red mud characterised by the flocculant added to the slurry
DE8989310550T 1988-10-14 1989-10-13 Abtrennung von rotschlamm aus bayer-prozess-laugen. Expired - Fee Related DE68902625T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888824176A GB8824176D0 (en) 1988-10-14 1988-10-14 Recovery of alumina from bauxite

Publications (2)

Publication Number Publication Date
DE68902625D1 DE68902625D1 (de) 1992-10-01
DE68902625T2 true DE68902625T2 (de) 1993-04-15

Family

ID=10645236

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989310550T Expired - Fee Related DE68902625T2 (de) 1988-10-14 1989-10-13 Abtrennung von rotschlamm aus bayer-prozess-laugen.

Country Status (8)

Country Link
US (1) US5008089A (de)
EP (1) EP0367437B1 (de)
AU (1) AU625642B2 (de)
CA (1) CA2000515C (de)
DE (1) DE68902625T2 (de)
ES (1) ES2034647T3 (de)
GB (1) GB8824176D0 (de)
HU (1) HU204734B (de)

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US5080803A (en) * 1989-10-13 1992-01-14 Alcan International Limited Process for decantation of suspensions
DE69002045T2 (de) * 1989-10-13 1993-09-30 Alcan Int Ltd Verfahren und Vorrichtung zum Dekantieren von Suspensionen.
US5043077A (en) * 1989-12-11 1991-08-27 Alcan International Limited Treatment of bayer process red mud slurries
US5106599A (en) * 1990-02-06 1992-04-21 Nalco Chemical Company Alumina crystal growth additive
ES2103299T3 (es) * 1990-06-25 1997-09-16 Nalco Australia Pty Limited Modificacion de crecimiento cristalino.
US5118484A (en) * 1990-08-17 1992-06-02 Alcan International Limited Desilication of bayer process solutions
US5091159A (en) * 1991-06-10 1992-02-25 Nalco Chemical Company Use of dextran as a filtration aid for thickener overflow filtration in Kelly filters in the Bayer process
US5387405A (en) * 1992-03-25 1995-02-07 Nalco Chemical Company Bayer liquor polishing
US5217620A (en) * 1992-11-23 1993-06-08 Nalco Chemical Company Clarification aid for the Bayer process
FR2708587B1 (fr) * 1993-07-29 1995-09-01 Snf Sa Procédé pour fluidifier les suspensions aqueuses de boues rouges dans la fabrication de l'alumine par la technique Bayer .
US5346628A (en) * 1993-10-29 1994-09-13 Nalco Chemical Company Polymers for flocculating red mud from bayer process liquors
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
US5711923A (en) * 1994-03-25 1998-01-27 Nalco Chemical Company Hydroxymethyl diphosphonated polyacrylates for red mud treatment
US5679221A (en) * 1994-08-26 1997-10-21 Westvaco Corporation Method for aluminum reduction in recycled pulp and paper
US5478477A (en) * 1994-11-04 1995-12-26 Nalco Chemical Company Use of alginates to treat bauxite red mud
AU707514B2 (en) * 1995-04-05 1999-07-15 Nalco Chemical Company Biopolymer use as a sand filter aid
US6210585B1 (en) 1995-07-26 2001-04-03 Nalco Chemical Company Fatty acid free latex polymer flocculants
US5837215A (en) * 1995-07-26 1998-11-17 Nalco Chemical Company Method of removing insoluble materials from bayer process with fatty acid and fatty acid free polymer flocculants
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
AUPP084997A0 (en) * 1997-12-11 1998-01-08 Nalco Chemical Company Improvements relating to the bayer process
US6048463A (en) * 1997-12-12 2000-04-11 Nalco Chemical Company Water continuous methyl acrylate emulsion polymer combinations and methyl acrylate emulsion homopolymers for improved flocculation of red mud in the bayer process
US6036869A (en) * 1997-12-12 2000-03-14 Nalco Chemical Company Water continuous methyl acrylate emulsion polymers for improved flocculation of red mud in the Bayer process
US6086771A (en) * 1997-12-12 2000-07-11 Nalco Chemical Company Water continuous emulsion polymers for improving scale control in the bayer process
US6726845B1 (en) 1998-05-25 2004-04-27 Ondeo Nalco Company Dextran starch and flocculant combination for improving red mud clarification
AU755418B2 (en) * 1998-05-25 2002-12-12 Nalco Chemical Company Dextran, starch and flocculant combination for improving red mud clarification
AUPP370498A0 (en) * 1998-05-25 1998-06-18 Nalco Chemical Company Dextran, starch and flocculant combination for improving red mud clarification
US6372882B1 (en) 2000-04-03 2002-04-16 Nalco Chemical Company Method for producing substantially dry water-insoluble polymers for improved flocculation in the bayer process
US8971913B2 (en) * 2003-06-27 2015-03-03 Qualcomm Incorporated Method and apparatus for wireless network hybrid positioning
CN101538058B (zh) * 2008-03-19 2010-12-29 中国科学院过程工程研究所 低温低压水化学法回收赤泥中氧化铝和氧化钠
US8298508B2 (en) 2010-08-09 2012-10-30 Nalco Company Recovery of alumina trihydrate during the bayer process using cross-linked polysaccharides
US9199855B2 (en) 2010-08-09 2015-12-01 Nalco Company Chemical treatment to improve red mud separation and washing in the bayer process
US9102995B2 (en) 2010-08-09 2015-08-11 Nalco Company Cross-linked ethylsulfonated dihydroxypropyl cellulose
US8252266B2 (en) 2010-08-09 2012-08-28 Nalco Company Recovery of alumina trihydrate during the bayer process using scleroglucan
US9174852B2 (en) 2010-08-09 2015-11-03 Nalco Company Methods to improve filtration for the Bayer process
BR112013005398B1 (pt) * 2010-09-06 2021-05-04 Alcoa Of Australia Limited métodos para aumentar a estabilidade de um licor e para controlar a precipitação de compostos contendo alumínio de licores do processo bayer
BR112013023907A2 (pt) 2011-03-18 2019-09-24 Orbite Aluminae Inc processo de recuperação de ao menos um elemento terra-rara a partir de um material contendo alumínio
EP2705169A4 (de) 2011-05-04 2015-04-15 Orbite Aluminae Inc Verfahren zur wiedergewinnung von seltenerdelementen aus verschiedenen erzen
EP2714594A4 (de) 2011-06-03 2015-05-20 Orbite Aluminae Inc Verfahren zur herstellung von hämatit
JP2014526431A (ja) 2011-09-16 2014-10-06 オーバイト アルミナ インコーポレイテッド アルミナ及び様々な他の生成物の調製プロセス
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
CN104520237B (zh) 2012-03-29 2018-05-01 奥佰特氧化铝有限公司 处理飞灰的方法
AU2013231168B2 (en) 2012-04-26 2015-05-14 Showa Denko K.K. Washing method of goethite-containing red mud
CN102718238A (zh) * 2012-06-21 2012-10-10 中国铝业股份有限公司 一种拜耳法赤泥的洗涤沉降分离方法
MY175471A (en) 2012-07-12 2020-06-29 Orbite Tech Inc Processes for preparing titanium oxide and various other products
WO2014047728A1 (en) 2012-09-26 2014-04-03 Orbite Aluminae Inc. Processes for preparing alumina and magnesium chloride by hc1 leaching of various materials
JP6230613B2 (ja) * 2012-10-29 2017-11-15 ナルコ カンパニー バイヤー法で生じるスラリーの濾過を強化する方法
US9534274B2 (en) 2012-11-14 2017-01-03 Orbite Technologies Inc. Methods for purifying aluminium ions
EP2938575B1 (de) * 2012-12-28 2021-01-20 Nalco Company Chemische behandlung zur verbesserung von rotschlammtrennung und -waschung im bayerverfahren
US10427950B2 (en) * 2015-12-04 2019-10-01 Ecolab Usa Inc. Recovery of mining processing product using boronic acid-containing polymers
CN115448339A (zh) * 2022-08-29 2022-12-09 中铝郑州有色金属研究院有限公司 一种粗液净化药剂及其制备方法和在氧化铝生产过程中的应用方法

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* Cited by examiner, † Cited by third party
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US3085853A (en) * 1958-12-23 1963-04-16 Dow Chemical Co Method of employing dextrans
US3397953A (en) * 1965-03-04 1968-08-20 Atlas Chem Ind Flocculating agent
US3390959A (en) * 1965-04-30 1968-07-02 Nalco Chemical Co Process of making alumina
US3445187A (en) * 1966-05-25 1969-05-20 Nalco Chemical Co Process for separation of red mud from dissolved alumina
CA825234A (en) * 1966-06-06 1969-10-14 G. Flock Howard Flocculation and filtration of alumina trihydrate
GB1154993A (en) * 1967-01-18 1969-06-11 Colonial Sugar Refining Co Improvements in a process for the preparation of High Viscosity Gums
US3541009A (en) * 1968-12-18 1970-11-17 Nalco Chemical Co Polymer-polysaccharide-caustic alkali compositions and process of separating solids from aqueous suspensions therewith
US3681012A (en) * 1969-06-17 1972-08-01 Nalco Chemical Co Process for making alumina
JPS4929080B1 (de) * 1970-08-24 1974-08-01
GB1439057A (en) * 1973-10-10 1976-06-09 Allied Colloids Ltd Flocculating agents for alkaline systems
US4545902A (en) * 1984-09-17 1985-10-08 Nalco Chemical Company Flocculants for bauxite (red mud)
US4608237A (en) * 1985-04-24 1986-08-26 Nalco Chemical Company Use of polymers in alumina precipitation in the Bayer process of bauxite beneficiation
GB8519107D0 (en) * 1985-07-29 1985-09-04 Allied Colloids Ltd Flocculation process
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

Also Published As

Publication number Publication date
AU4289589A (en) 1990-04-26
HUT55318A (en) 1991-05-28
ES2034647T3 (es) 1993-04-01
EP0367437A1 (de) 1990-05-09
EP0367437B1 (de) 1992-08-26
HU895636D0 (en) 1990-01-28
AU625642B2 (en) 1992-07-16
CA2000515A1 (en) 1990-04-14
US5008089A (en) 1991-04-16
GB8824176D0 (en) 1988-11-23
HU204734B (en) 1992-02-28
DE68902625D1 (de) 1992-10-01
CA2000515C (en) 2000-01-25

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8339 Ceased/non-payment of the annual fee