ES2019173A6 - Process for the production of alumina from gibbsitic bauxites - Google Patents

Process for the production of alumina from gibbsitic bauxites

Info

Publication number
ES2019173A6
ES2019173A6 ES8903647A ES8903647A ES2019173A6 ES 2019173 A6 ES2019173 A6 ES 2019173A6 ES 8903647 A ES8903647 A ES 8903647A ES 8903647 A ES8903647 A ES 8903647A ES 2019173 A6 ES2019173 A6 ES 2019173A6
Authority
ES
Spain
Prior art keywords
gibbsitic
bauxites
alumina
production
digestion
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
ES8903647A
Other languages
Spanish (es)
Inventor
Gyorgy Banvolgyi
Jozsef Zoldi
Peter Siklosi
Tibor Ferenczi
Toth Anna Csordas
Ivan Feher
Ildko Tassy
Istvan Sajo
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.)
MAGYAR ALUMINIUM
Magyar Aluminiumipari Troeszt
Original Assignee
MAGYAR ALUMINIUM
Magyar Aluminiumipari Troeszt
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 MAGYAR ALUMINIUM, Magyar Aluminiumipari Troeszt filed Critical MAGYAR ALUMINIUM
Publication of ES2019173A6 publication Critical patent/ES2019173A6/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Process for the production of alumina from "gibbsitic" bauxites. The process comprises mixing "gibbsitic" bauxites with sodium hydroxide-sodium aluminate digestion liquor, digestion between 100 and 180 degree C, dilution of the suspension, separation of the red sludge, precipitation of aluminium hydroxide and calcination, characterised by control of the process in which the concentration of reactive hydroxides in the liquid phase leaving the reactor, defined by the formula <IMAGE> is maintained below 6 g/l, preferably between 0 and 2 g/l. Desirably this control is achieved by controlling the bauxite/digestion liquor ratio.
ES8903647A 1988-10-27 1989-10-27 Process for the production of alumina from gibbsitic bauxites Expired - Fee Related ES2019173A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU885601A HU201276B (en) 1988-10-27 1988-10-27 Process for producing alum earth from bauxite containing gibbsite

Publications (1)

Publication Number Publication Date
ES2019173A6 true ES2019173A6 (en) 1991-06-01

Family

ID=10970450

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8903647A Expired - Fee Related ES2019173A6 (en) 1988-10-27 1989-10-27 Process for the production of alumina from gibbsitic bauxites

Country Status (5)

Country Link
AU (1) AU619609B2 (en)
BR (1) BR8905475A (en)
CA (1) CA2000832C (en)
ES (1) ES2019173A6 (en)
HU (1) HU201276B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2226842A1 (en) * 1995-07-11 1997-01-30 Comalco Aluminium Limited High yield precipitation process
CN1295354C (en) * 2005-10-19 2007-01-17 贵阳铝镁设计研究院 Device for dissolving out aluminium oxide

Also Published As

Publication number Publication date
BR8905475A (en) 1990-05-29
CA2000832A1 (en) 1990-04-27
CA2000832C (en) 1993-05-11
AU619609B2 (en) 1992-01-30
HU201276B (en) 1990-10-28
AU4373189A (en) 1990-05-03

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Legal Events

Date Code Title Description
SA6 Expiration date (snapshot 920101)

Free format text: 2009-10-27

FD1A Patent lapsed

Effective date: 20010402