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
Application number
ES479716A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FLSmidth and Co AS
Original Assignee
FLSmidth and Co AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FLSmidth and Co AS filed Critical FLSmidth and Co AS
Publication of ES479716A1 publication Critical patent/ES479716A1/es
Expired legal-status Critical Current

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.
ES479716A 1978-04-20 1979-04-19 Un metodo para producir alumina anhidra. Expired ES479716A1 (es)

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)

* Cited by examiner, † Cited by third party
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
EP0502896B1 (en) * 1989-11-27 1993-12-29 Alcan International Limited Calcination process for the production of alumina from alumina trihydrate and apparatus therefor
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
US9109801B2 (en) * 2009-07-02 2015-08-18 Pneumatic Processing Technologies, Llc Coal heat-treatment process and system
US8309052B2 (en) * 2009-07-02 2012-11-13 Pneumatic Processing Technologies, L.L.C. Carbon heat-treatment process
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
US10345048B2 (en) * 2016-05-12 2019-07-09 Golden Renewable Energy, LLC Cyclonic condensing and cooling system
US10436525B2 (en) 2016-05-12 2019-10-08 Golden Renewable Energy, LLC Cyclonic cooling system
IL263806B (en) 2016-06-21 2022-09-01 Braven Env Llc System and method for coal separation
US20170361268A1 (en) 2016-06-21 2017-12-21 Golden Renewable Energy Char separator
US10961062B2 (en) 2016-06-21 2021-03-30 Golden Renewable Energy, LLC Bag press feeder assembly
EP3481923A4 (en) 2016-07-05 2019-12-18 Golden Renewable Energy, LLC SYSTEM AND METHOD 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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB745552A (en) * 1952-06-12 1956-02-29 Dorr Oliver Inc Process of calcining finely divided solids
FR1080901A (fr) * 1952-06-12 1954-12-14 Dorr Co Procédé et appareil de calcination de l'alumine
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
US3057680A (en) * 1958-03-11 1962-10-09 Metallgesellschaft Ag Method of carrying out heat-consuming reactions
FR1248038A (fr) * 1959-10-28 1960-12-09 Electrochimie Electrometallurg Procédé de fabrication d'alumines anhydres
FR1292741A (fr) * 1960-06-24 1962-05-04 Metallgesellschaft Ag Procédé pour la calcination de l'hydrate d'alumine
DE1146041B (de) * 1960-06-24 1963-03-28 Metallgesellschaft Ag Calcinieren von Tonerdehydrat
FR1295554A (fr) * 1961-04-28 1962-06-08 Electrochimie Soc Dispositif pour la fabrication d'alumines anhydres
GB1205804A (en) * 1966-10-12 1970-09-16 Ishikawajima Harima Heavy Ind A method of and apparatus for calcining ore
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

Also Published As

Publication number Publication date
YU223982A (en) 1986-08-31
JPS54151597A (en) 1979-11-28
AU4631079A (en) 1979-10-25
MX151661A (es) 1985-01-30
NO791174L (no) 1979-10-23
YU44842B (en) 1991-04-30
FR2423445B1 (es) 1983-08-05
DE2916142A1 (de) 1979-10-31
SU932979A3 (ru) 1982-05-30
GB2097903B (en) 1983-03-23
IN150912B (es) 1983-01-15
ES482578A1 (es) 1980-04-16
GB2097903A (en) 1982-11-10
US4529579A (en) 1985-07-16
HU180947B (en) 1983-05-30
DE2916142C2 (de) 1983-01-27
NL7903123A (nl) 1979-10-23
FR2423445A1 (fr) 1979-11-16
BR7902452A (pt) 1979-10-30
AU533515B2 (en) 1983-12-01

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