ES2154146B1 - Procedimiento de purificacion de alumina por reduccion de impurezas a especies volatiles. - Google Patents
Procedimiento de purificacion de alumina por reduccion de impurezas a especies volatiles.Info
- Publication number
- ES2154146B1 ES2154146B1 ES9801035A ES9801035A ES2154146B1 ES 2154146 B1 ES2154146 B1 ES 2154146B1 ES 9801035 A ES9801035 A ES 9801035A ES 9801035 A ES9801035 A ES 9801035A ES 2154146 B1 ES2154146 B1 ES 2154146B1
- Authority
- ES
- Spain
- Prior art keywords
- sub
- reduction
- volatile species
- impurities
- 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 - Fee Related
Links
- 239000012535 impurity Substances 0.000 title abstract 3
- 238000000746 purification Methods 0.000 title abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title 1
- 229910052782 aluminium Inorganic materials 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000004320 controlled atmosphere Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 abstract 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Catalysts (AREA)
Abstract
Procedimiento de purificación de distintos tipos de alúmina (A1{sub,2}O{sub,3}) por reducción de impurezas (Na{sub,2}O, Fe{sub,2}O{sub,3} y K{sub,2}O) a especies volátiles mediante tratamiento térmico a temperaturas habitualmente comprendidas entre 1300 °C y 1500 °C, durante tiempos generalmente entre 1 y 6 horas, y en atmósferas controladas de baja presión parcial de O{sub,2}. En estas condiciones, las impurezas son eliminadas por reducción a especies volátiles. La alúmina así obtenida presenta amplias aplicaciones en el campo de los refractarios, y en la fabricación de materiales cerámicos avanzados y composites.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9801035A ES2154146B1 (es) | 1998-05-19 | 1998-05-19 | Procedimiento de purificacion de alumina por reduccion de impurezas a especies volatiles. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9801035A ES2154146B1 (es) | 1998-05-19 | 1998-05-19 | Procedimiento de purificacion de alumina por reduccion de impurezas a especies volatiles. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2154146A1 ES2154146A1 (es) | 2001-03-16 |
| ES2154146B1 true ES2154146B1 (es) | 2001-12-01 |
Family
ID=8303822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES9801035A Expired - Fee Related ES2154146B1 (es) | 1998-05-19 | 1998-05-19 | Procedimiento de purificacion de alumina por reduccion de impurezas a especies volatiles. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2154146B1 (es) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES8406985A1 (es) * | 1983-05-13 | 1984-09-01 | Consejo Superior Investigacion | Procedimiento continuo de obtencion de compuestos de aluminio a partir de silicatos aluminicos y otros minerales de alu-minio. |
| NL191535C (nl) * | 1983-08-03 | 1995-09-04 | Rwe Dea Ag | Werkwijze voor het bereiden van zuiver aluminiumoxide. |
| JPH09263440A (ja) * | 1996-03-29 | 1997-10-07 | Ngk Insulators Ltd | アルミナ焼結体およびその製造方法 |
-
1998
- 1998-05-19 ES ES9801035A patent/ES2154146B1/es not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2154146A1 (es) | 2001-03-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EC2A | Search report published |
Date of ref document: 20010316 Kind code of ref document: A1 Effective date: 20010316 |
|
| FD2A | Announcement of lapse in spain |
Effective date: 20180824 |