BR9707543A - Bauxite treatment - Google Patents
Bauxite treatmentInfo
- Publication number
- BR9707543A BR9707543A BR9707543-4A BR9707543A BR9707543A BR 9707543 A BR9707543 A BR 9707543A BR 9707543 A BR9707543 A BR 9707543A BR 9707543 A BR9707543 A BR 9707543A
- Authority
- BR
- Brazil
- Prior art keywords
- bauxite
- assimilation
- solution
- treatment
- silica
- Prior art date
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
- C01F7/04—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
- C01F7/0613—Pretreatment of the minerals, e.g. grinding
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Patente de Invenção: <B>"TRATAMENTO DE BAUXITA"<D>. Antes da assimilação da bauxita (que contém sílica) em uma solução de assimilação tal como soda cáustica para a produção de óxido de alumínio, a bauxita é ativada mecanicamente para induzir uma reação mecanoquímica na presença de um reagente tal como cal. Pelo menos uma parte da sílica é mantida insolúvel e não reativa na formação de um produto de dessilificação de silicato-sódio-alumínio (DSP) durante a subseq³ente assimilação da bauxita na solução de assimilação.Invention Patent: <B> "BAUXITE TREATMENT" <D>. Before assimilation of bauxite (which contains silica) in an assimilation solution such as caustic soda for the production of aluminum oxide, bauxite is mechanically activated to induce a mechanochemical reaction in the presence of a reagent such as lime. At least part of the silica is kept insoluble and non-reactive in the formation of a sodium silicate aluminum desilification product (DSP) during the subsequent assimilation of bauxite into the assimilation solution.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPN8082A AUPN808296A0 (en) | 1996-02-15 | 1996-02-15 | Bauxite treatment |
PCT/AU1997/000074 WO1997029993A1 (en) | 1996-02-15 | 1997-02-11 | Bauxite treatment |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9707543A true BR9707543A (en) | 2000-01-04 |
Family
ID=3792397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9707543-4A BR9707543A (en) | 1996-02-15 | 1997-02-11 | Bauxite treatment |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0880468A4 (en) |
AU (1) | AUPN808296A0 (en) |
BR (1) | BR9707543A (en) |
WO (1) | WO1997029993A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2606821C1 (en) * | 2015-09-03 | 2017-01-10 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" | Method of processing nepheline ore |
RU2688083C1 (en) * | 2018-05-16 | 2019-05-17 | Федеральное государственное бюджетное учреждение науки Институт металлургии и материаловедения им. А.А. Байкова Российской академии наук (ИМЕТ РАН) | Method of nepheline concentrate desiliconization and device for its implementation |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3357792A (en) * | 1966-10-03 | 1967-12-12 | Gebefugi Istvan | Kneading pretreatment for the production of aluminum hydroxide |
AU558556B2 (en) * | 1981-09-10 | 1987-02-05 | Comalco Limited | Alumina production |
DE4036448A1 (en) * | 1989-11-16 | 1991-05-23 | Franz Prof Dr Ing Pawlek | Bauxite digestion in ball mill - for simultaneous fine grinding, leaching and silica removal |
FR2728556B1 (en) * | 1994-12-22 | 1997-01-31 | Pechiney Aluminium | PROCESS FOR THE REMOVAL OF IRON FROM SODIUM ALUMINATE LIQUORS DERIVED FROM ALKALINE BAUXITE ALOHYDRATE ATTACK |
-
1996
- 1996-02-15 AU AUPN8082A patent/AUPN808296A0/en not_active Abandoned
-
1997
- 1997-02-11 EP EP97902108A patent/EP0880468A4/en not_active Withdrawn
- 1997-02-11 WO PCT/AU1997/000074 patent/WO1997029993A1/en not_active Application Discontinuation
- 1997-02-11 BR BR9707543-4A patent/BR9707543A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO1997029993A1 (en) | 1997-08-21 |
EP0880468A4 (en) | 1999-05-12 |
EP0880468A1 (en) | 1998-12-02 |
AUPN808296A0 (en) | 1996-03-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EG | Technical examination (opinion): publication of technical examination (opinion) | ||
B09B | Patent application refused [chapter 9.2 patent gazette] |