ES479716A1 - Un metodo para producir alumina anhidra. - Google Patents
Un metodo para producir alumina anhidra.Info
- Publication number
- ES479716A1 ES479716A1 ES479716A ES479716A ES479716A1 ES 479716 A1 ES479716 A1 ES 479716A1 ES 479716 A ES479716 A ES 479716A ES 479716 A ES479716 A ES 479716A ES 479716 A1 ES479716 A1 ES 479716A1
- Authority
- ES
- Spain
- Prior art keywords
- alumina
- alpha
- precalcined
- recrystallized
- conversion
- 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
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
- C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
- C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
- C01F7/444—Apparatus therefor
-
- 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
- C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
- C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Catalysts (AREA)
Abstract
Un método para producir alúmina anhidra a partir de alúmina trihidratada en el que el agua libre y unida químicamente es retirada, al menor en parte, en una zona de precalcinación en donde la alúmina trihidratada está en suspensión en una corriente de gases calientes, calentada por ellos y separada de ellos, después de lo cual la alúmina deshidratada precalcinada es recristalizada al menos parcialmente a alfa-alúmina en una cámara de reacción provista de medios para alimentar combustible y gas que contiene oxígeno a una zona de combustión en la cámara, en la que se inicia la recristalización exotérmica mediante calentamiento adicional de la alúmina precalcinada suspendiendo el material en gases de combustión calientes; después de lo cual la alúmina recristalizada al menos parcialmente de transporta fuera de la cámara de reacción suspendida en la corriente de gases de combustión, se separa de la corriente gaseosa y se somete a un enfriamiento rápido en una zona de enfriamiento, caracterizadopor proporcionar una iniciación vigorosa de la reacción de recristalización por mezcla íntima de alúmina precalcinada y combustible seguido de suspensión de esta mezcla en el gas que contiene oxígeno alimentado a la zona de combustión.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1568978 | 1978-04-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES479716A1 true ES479716A1 (es) | 1980-06-16 |
Family
ID=10063676
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES479716A Expired ES479716A1 (es) | 1978-04-20 | 1979-04-19 | Un metodo para producir alumina anhidra. |
ES482578A Expired ES482578A1 (es) | 1978-04-20 | 1979-07-18 | Un aparato para producir alumina anhidra. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES482578A Expired ES482578A1 (es) | 1978-04-20 | 1979-07-18 | Un aparato para producir alumina anhidra. |
Country Status (15)
Country | Link |
---|---|
US (1) | US4529579A (es) |
JP (1) | JPS54151597A (es) |
AU (1) | AU533515B2 (es) |
BR (1) | BR7902452A (es) |
DE (1) | DE2916142C2 (es) |
ES (2) | ES479716A1 (es) |
FR (1) | FR2423445A1 (es) |
GB (1) | GB2097903B (es) |
HU (1) | HU180947B (es) |
IN (1) | IN150912B (es) |
MX (1) | MX151661A (es) |
NL (1) | NL7903123A (es) |
NO (1) | NO791174L (es) |
SU (1) | SU932979A3 (es) |
YU (1) | YU44842B (es) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK157442C (da) * | 1982-12-07 | 1990-06-05 | Smidth & Co As F L | Fremgangsmaade og apparat til kalcinering af fosfat |
FR2549816B1 (fr) * | 1983-07-28 | 1985-11-15 | Fives Cail Babcock | Installation de calcination pour la production de plusieurs qualites d'alumine et procede d'exploitation de cette installation |
FR2552750B1 (fr) * | 1983-09-30 | 1987-08-14 | Fives Cail Babcock | Procede d'exploitation d'une installation de calcination pour la production de plusieurs qualites d'alumine |
IT1184114B (it) * | 1985-01-18 | 1987-10-22 | Montedison Spa | Alfa allumina sotto forma di particelle sferiche,non aggregate,a distribuzione granulometrica ristretta e di dimensioni inferiori a 2 micron,e processo per la sua preparazione |
US5075090A (en) * | 1988-01-12 | 1991-12-24 | Vista Chemical Company | Process for preparing small particle size mixed metal oxides |
ES2047956T3 (es) * | 1989-11-27 | 1994-03-01 | Alcan Int Ltd | Procedimiento de calcinacion para la produccion de alumina a partir de trihidrato de alumina y aparato para esto. |
DE19542309A1 (de) * | 1995-11-14 | 1997-05-15 | Metallgesellschaft Ag | Verfahren zur Herstellung von Aluminiumoxid aus Aluminiumhydroxid |
US6905662B2 (en) * | 2002-05-16 | 2005-06-14 | Ffe Minerals Corp. | Elimination of undesirable volatile organic byproducts of an alumina process |
DE10260739B3 (de) * | 2002-12-23 | 2004-09-16 | Outokumpu Oy | Verfahren und Anlage zur Herstellung von Metalloxid aus Metallverbindungen |
US8309052B2 (en) * | 2009-07-02 | 2012-11-13 | Pneumatic Processing Technologies, L.L.C. | Carbon heat-treatment process |
US9109801B2 (en) * | 2009-07-02 | 2015-08-18 | Pneumatic Processing Technologies, Llc | Coal heat-treatment process and system |
CN106542555A (zh) * | 2015-09-21 | 2017-03-29 | 沈阳铝镁设计研究院有限公司 | 一种气态悬浮焙烧炉富氧燃烧工艺方法 |
US10436525B2 (en) | 2016-05-12 | 2019-10-08 | Golden Renewable Energy, LLC | Cyclonic cooling system |
US10345048B2 (en) * | 2016-05-12 | 2019-07-09 | Golden Renewable Energy, LLC | Cyclonic condensing and cooling system |
US10961062B2 (en) | 2016-06-21 | 2021-03-30 | Golden Renewable Energy, LLC | Bag press feeder assembly |
US20170361268A1 (en) | 2016-06-21 | 2017-12-21 | Golden Renewable Energy | Char separator |
CA3028115A1 (en) | 2016-06-21 | 2017-12-28 | Golden Renewable Energy, LLC | Char separator and method |
NZ749216A (en) | 2016-07-05 | 2020-05-29 | Golden Renewable Energy Llc | System and process for converting waste plastic into fuel |
RU2660003C1 (ru) * | 2017-05-16 | 2018-07-04 | Владимир Николаевич Ведров | Установка для термообработки гидроксида алюминия |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1080901A (fr) * | 1952-06-12 | 1954-12-14 | Dorr Co | Procédé et appareil de calcination de l'alumine |
GB745552A (en) * | 1952-06-12 | 1956-02-29 | Dorr Oliver Inc | Process of calcining finely divided solids |
US3057680A (en) * | 1958-03-11 | 1962-10-09 | Metallgesellschaft Ag | Method of carrying out heat-consuming reactions |
DE1092889B (de) * | 1958-03-11 | 1960-11-17 | Metallgesellschaft Ag | Verfahren und Vorrichtung zur Durchfuehrung von waermeverbrauchenden Reaktionen zwischen Feststoffen und Gasen nach dem Wirbelschichtprinzip |
FR1248038A (fr) * | 1959-10-28 | 1960-12-09 | Electrochimie Electrometallurg | Procédé de fabrication d'alumines anhydres |
DE1146041B (de) * | 1960-06-24 | 1963-03-28 | Metallgesellschaft Ag | Calcinieren von Tonerdehydrat |
FR1292741A (fr) * | 1960-06-24 | 1962-05-04 | Metallgesellschaft Ag | Procédé pour la calcination de l'hydrate d'alumine |
FR1295554A (fr) * | 1961-04-28 | 1962-06-08 | Electrochimie Soc | Dispositif pour la fabrication d'alumines anhydres |
DK133056C (da) * | 1966-10-12 | 1976-08-09 | Ishikawajima Harima Jukohyo Kk | Fremgangsmade til kalcinering eller ristning af finmalm samt anleg til udovelse af fremgangsmaden |
GB1143880A (es) * | 1967-06-16 | 1900-01-01 | ||
GB1428680A (en) * | 1972-12-11 | 1976-03-17 | Smidth & Co As F L | Calcination of pulverous material |
JPS5716927B2 (es) * | 1974-03-11 | 1982-04-08 | ||
GB1463124A (en) * | 1974-06-18 | 1977-02-02 | Smidth & Co As F L | Calcination of pulverous material |
DE2629082C2 (de) * | 1976-06-29 | 1985-09-05 | Krupp Polysius Ag, 4720 Beckum | Verfahren und Vorrichtung zur Wärmebehandlung von Feingut |
DE3008234A1 (de) * | 1980-01-23 | 1981-07-30 | Aluterv-EKI Forschungs-, Entwurfs-u.Generalauftragnehmer-Zentrale der ungar. Aluminiumwerke, Budapest | Verfahren und anlage zum brennen von feinkoernigem gut |
-
1979
- 1979-04-06 NO NO791174A patent/NO791174L/no unknown
- 1979-04-18 GB GB8202034A patent/GB2097903B/en not_active Expired
- 1979-04-19 ES ES479716A patent/ES479716A1/es not_active Expired
- 1979-04-19 MX MX177371A patent/MX151661A/es unknown
- 1979-04-19 SU SU792755653A patent/SU932979A3/ru active
- 1979-04-19 FR FR7909875A patent/FR2423445A1/fr active Granted
- 1979-04-19 HU HU79SI1688A patent/HU180947B/hu not_active IP Right Cessation
- 1979-04-19 JP JP4850579A patent/JPS54151597A/ja active Pending
- 1979-04-20 BR BR7902452A patent/BR7902452A/pt unknown
- 1979-04-20 NL NL7903123A patent/NL7903123A/xx not_active Application Discontinuation
- 1979-04-20 AU AU46310/79A patent/AU533515B2/en not_active Ceased
- 1979-04-20 DE DE2916142A patent/DE2916142C2/de not_active Expired
- 1979-04-20 IN IN398/CAL/79A patent/IN150912B/en unknown
- 1979-07-18 ES ES482578A patent/ES482578A1/es not_active Expired
-
1982
- 1982-10-05 YU YU2239/82A patent/YU44842B/xx unknown
-
1984
- 1984-06-28 US US06/625,776 patent/US4529579A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2423445A1 (fr) | 1979-11-16 |
FR2423445B1 (es) | 1983-08-05 |
NO791174L (no) | 1979-10-23 |
DE2916142C2 (de) | 1983-01-27 |
US4529579A (en) | 1985-07-16 |
BR7902452A (pt) | 1979-10-30 |
AU533515B2 (en) | 1983-12-01 |
GB2097903A (en) | 1982-11-10 |
DE2916142A1 (de) | 1979-10-31 |
NL7903123A (nl) | 1979-10-23 |
SU932979A3 (ru) | 1982-05-30 |
JPS54151597A (en) | 1979-11-28 |
AU4631079A (en) | 1979-10-25 |
MX151661A (es) | 1985-01-30 |
ES482578A1 (es) | 1980-04-16 |
YU44842B (en) | 1991-04-30 |
IN150912B (es) | 1983-01-15 |
HU180947B (en) | 1983-05-30 |
YU223982A (en) | 1986-08-31 |
GB2097903B (en) | 1983-03-23 |
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