ES2096430T3 - Procedimiento de tratamiento de bauxitas que contienen una mezcla de alumina trihidratada y alumina monohidratada. - Google Patents
Procedimiento de tratamiento de bauxitas que contienen una mezcla de alumina trihidratada y alumina monohidratada.Info
- Publication number
- ES2096430T3 ES2096430T3 ES94420304T ES94420304T ES2096430T3 ES 2096430 T3 ES2096430 T3 ES 2096430T3 ES 94420304 T ES94420304 T ES 94420304T ES 94420304 T ES94420304 T ES 94420304T ES 2096430 T3 ES2096430 T3 ES 2096430T3
- Authority
- ES
- Spain
- Prior art keywords
- alumina
- attack
- mixture
- bauxites
- treatment procedure
- 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 - Lifetime
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- 239000000203 mixture Substances 0.000 title abstract 2
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 title 1
- 229910001570 bauxite Inorganic materials 0.000 abstract 2
- 239000003518 caustics Substances 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 150000004682 monohydrates Chemical class 0.000 abstract 2
- 150000004684 trihydrates Chemical class 0.000 abstract 2
- 238000004131 Bayer process Methods 0.000 abstract 1
- 238000010908 decantation Methods 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- ZXKXJHAOUFHNAS-UHFFFAOYSA-N fenfluramine hydrochloride Chemical compound [Cl-].CC[NH2+]C(C)CC1=CC=CC(C(F)(F)F)=C1 ZXKXJHAOUFHNAS-UHFFFAOYSA-N 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 235000020094 liqueur Nutrition 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
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
- C01F7/062—Digestion
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PROCESO DE TRATAMIENTO POR ATAQUE ALCALINO SEGUN EL PROCESO BAYER DE BAUXITA MIXTA O BAUXITA DE TRIHIDRATO DE ALUMINA QUE CONTIENE TAMBIEN ALUMINA EN ESTADO DE MONOHIDRATO EN LA PROPORCION PONDERAL DE AL MENOS 5% DE LA CANTIDAD TOTAL DE ALUMINA EN LA BAUXITA. SE UTILIZAN LICORES DE ALTA CONCENTRACION EN SOSA CAUSTICA DURANTE LOS DOS ATAQUES A BAJA Y ALTA TEMPERATURA DE LA BAUXITA, ESTANDO EL LICOR DEL PRIMER ATAQUE CONSTITUIDO POR LA MEZCLA DE UNA ALICUOTA DE LICOR DESCOMPUESTA CON EL LICOR SIMPLEMENTE DECANTADO OBTENIDO DEL ATAQUE A ALTA TEMPERATURA DE LOS RESIDUOS DE PRIMER ATAQUE QUE CONTIENE MONOHIDRATO DE ALUMINA. A PARTIR DEL LICOR SOBRESATURADO OBTENIDO DEL PRIMER ATAQUE, TRAS LA DECANTACION, FILTRACION Y DILUCION PARA REDUCIR SU CONCENTRACION EN SOSA CAUSTICA, SE PRECIPITA POR DESCOMPOSICION EN PRESENCIA DE UN CEBO UN TRIHIDRATO DE GRAN PUREZA CON UNA PRODUCTIVIDAD ELEVADA SOLUBILIZABLE SUPERIOR A 95%.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9313601A FR2712275B1 (fr) | 1993-11-09 | 1993-11-09 | Procédé de traitement de bauxites contenant un mélange de trihydrate d'alumine et de monohydrate d'alumine. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2096430T3 true ES2096430T3 (es) | 1997-03-01 |
Family
ID=9452860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES94420304T Expired - Lifetime ES2096430T3 (es) | 1993-11-09 | 1994-11-08 | Procedimiento de tratamiento de bauxitas que contienen una mezcla de alumina trihidratada y alumina monohidratada. |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0652181B1 (es) |
| AU (1) | AU675361B2 (es) |
| DE (1) | DE69401418T2 (es) |
| ES (1) | ES2096430T3 (es) |
| FR (1) | FR2712275B1 (es) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPM761194A0 (en) * | 1994-08-23 | 1994-09-15 | Comalco Aluminium Limited | Improved process for the extraction of alumina from bauxite |
| BR9609429A (pt) * | 1995-07-11 | 2000-04-25 | Comalco Alu | Processo de precipitação de alto rendimento. |
| FR2834979B1 (fr) * | 2002-01-21 | 2004-02-20 | Pechiney Aluminium | Solubilisation des carbonates par recyclage des condensats lors de l'attaque sous pression des bauxites a monohydrates |
| CN100372772C (zh) * | 2005-07-18 | 2008-03-05 | 贵阳铝镁设计研究院 | 低浓度溶液种分生产粉状氧化铝方法 |
| CN104058433B (zh) * | 2014-06-19 | 2015-07-08 | 杭州化工机械有限公司 | 一种铝酸钠溶液快速分离与赤泥洗涤工艺 |
| CN109179461B (zh) * | 2018-09-19 | 2021-03-23 | 孝义市泰兴铝镁有限公司 | 一种低钠拟薄水铝石及其制备方法、装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324769A (en) * | 1979-10-01 | 1982-04-13 | Alumina Development Corporation | Extraction and production of alumina containing less than 0.03 percent iron oxide |
| US4446117A (en) * | 1983-04-04 | 1984-05-01 | Alumina Development Corporation | Double digestion system to reduce formation of ferrous iron |
| FR2581053B1 (fr) * | 1985-04-30 | 1987-05-29 | Pechiney Aluminium | Production d'alumine a partir de bauxite a gibbsite a basse teneur en silice reactive |
-
1993
- 1993-11-09 FR FR9313601A patent/FR2712275B1/fr not_active Expired - Fee Related
-
1994
- 1994-11-08 EP EP94420304A patent/EP0652181B1/fr not_active Expired - Lifetime
- 1994-11-08 ES ES94420304T patent/ES2096430T3/es not_active Expired - Lifetime
- 1994-11-08 DE DE69401418T patent/DE69401418T2/de not_active Expired - Lifetime
- 1994-11-08 AU AU77687/94A patent/AU675361B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR2712275B1 (fr) | 1995-12-15 |
| AU7768794A (en) | 1995-05-18 |
| AU675361B2 (en) | 1997-01-30 |
| DE69401418D1 (de) | 1997-02-20 |
| FR2712275A1 (fr) | 1995-05-19 |
| DE69401418T2 (de) | 1997-06-05 |
| EP0652181A1 (fr) | 1995-05-10 |
| EP0652181B1 (fr) | 1997-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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