ES2154146A1 - 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
- ES2154146A1 ES2154146A1 ES009801035A ES9801035A ES2154146A1 ES 2154146 A1 ES2154146 A1 ES 2154146A1 ES 009801035 A ES009801035 A ES 009801035A ES 9801035 A ES9801035 A ES 9801035A ES 2154146 A1 ES2154146 A1 ES 2154146A1
- Authority
- ES
- Spain
- Prior art keywords
- alumina
- low oxygen
- volatile species
- purification
- heating
- 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.)
- Granted
Links
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 true ES2154146A1 (es) | 2001-03-16 |
ES2154146B1 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) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985000799A1 (en) * | 1983-08-03 | 1985-02-28 | Atlantic Richfield Company | Production of high purity alumina |
US4670231A (en) * | 1983-05-13 | 1987-06-02 | Maria-Emilia Garcia-Clavel | Continuous procedure of obtention of compounds of aluminum from aluminum silicates and other aluminum ores |
EP0798276A1 (en) * | 1996-03-29 | 1997-10-01 | Ngk Insulators, Ltd. | Alumina sintered bodies and method for producing the same |
-
1998
- 1998-05-19 ES ES9801035A patent/ES2154146B1/es not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4670231A (en) * | 1983-05-13 | 1987-06-02 | Maria-Emilia Garcia-Clavel | Continuous procedure of obtention of compounds of aluminum from aluminum silicates and other aluminum ores |
WO1985000799A1 (en) * | 1983-08-03 | 1985-02-28 | Atlantic Richfield Company | Production of high purity alumina |
EP0798276A1 (en) * | 1996-03-29 | 1997-10-01 | Ngk Insulators, Ltd. | Alumina sintered bodies and method for producing the same |
Also Published As
Publication number | Publication date |
---|---|
ES2154146B1 (es) | 2001-12-01 |
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