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FR2359791A1 - PROCESS FOR PREPARING ACTIVE ALUMINA PELLETS - Google Patents

PROCESS FOR PREPARING ACTIVE ALUMINA PELLETS

Info

Publication number
FR2359791A1
FR2359791A1 FR7723140A FR7723140A FR2359791A1 FR 2359791 A1 FR2359791 A1 FR 2359791A1 FR 7723140 A FR7723140 A FR 7723140A FR 7723140 A FR7723140 A FR 7723140A FR 2359791 A1 FR2359791 A1 FR 2359791A1
Authority
FR
France
Prior art keywords
active alumina
alumina
degrees
plates
preparing active
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.)
Withdrawn
Application number
FR7723140A
Other languages
French (fr)
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.)
Martinswerk GmbH
Original Assignee
Martinswerk GmbH
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 Martinswerk GmbH filed Critical Martinswerk GmbH
Publication of FR2359791A1 publication Critical patent/FR2359791A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

Procédé de préparation de granulés d'alumine active. On part de poudre d'alumine active non broyée obtenue par chauffage rapide d'alumine trihydratée, éventuellement accompagnée d'alumine trihydratée non broyée, qu'on met à l'état de plaques, sans adjonction d'eau, par passage entre des cylindres sous des pressions d'au moins 1 t/cm de largeur des cylindres, on humidifie les plaques après concassage éventuel par la quantité d'eau nécessaire pour la formation de l'hydrate, on conserve à l'état humide pendant au moins 5 h à une température de 50 à 100 degrés C et on active finalement dans un courant de gaz sec à une température de 300 à 450 degrés C. Le procédé selon l'invention est d'une mise en oeuvre plus simple que les procédés de la technique antérieure conduisant à des granulés sphériques.Process for preparing active alumina granules. The starting point is unground active alumina powder obtained by rapid heating of trihydrated alumina, optionally accompanied by ungrounded alumina trihydrate, which is placed in the form of plates, without the addition of water, by passage between cylinders. under pressures of at least 1 t / cm of the width of the rolls, the plates are moistened after possible crushing with the quantity of water necessary for the formation of the hydrate, they are kept in the humid state for at least 5 h at a temperature of 50 to 100 degrees C and is finally activated in a stream of dry gas at a temperature of 300 to 450 degrees C. The process according to the invention is simpler to implement than the processes of the art anterior leading to spherical granules.

FR7723140A 1976-07-27 1977-07-27 PROCESS FOR PREPARING ACTIVE ALUMINA PELLETS Withdrawn FR2359791A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762633599 DE2633599A1 (en) 1976-07-27 1976-07-27 PROCESS FOR THE PRODUCTION OF GRANULATES FROM ACTIVE ALUMINUM OXIDE

Publications (1)

Publication Number Publication Date
FR2359791A1 true FR2359791A1 (en) 1978-02-24

Family

ID=5983993

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7723140A Withdrawn FR2359791A1 (en) 1976-07-27 1977-07-27 PROCESS FOR PREPARING ACTIVE ALUMINA PELLETS

Country Status (7)

Country Link
JP (1) JPS5317600A (en)
CA (1) CA1088725A (en)
DE (1) DE2633599A1 (en)
FR (1) FR2359791A1 (en)
GB (1) GB1575218A (en)
NL (1) NL7708250A (en)
SE (1) SE7708565L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56149320A (en) * 1980-04-21 1981-11-19 Sumitomo Alum Smelt Co Ltd Manufacture of activated alumina molding with low density
DE4118304A1 (en) * 1991-06-04 1992-12-24 Vaw Ver Aluminium Werke Ag ELECTROLYSIS CELL FOR ALUMINUM EFFICIENCY

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222129A (en) * 1962-02-26 1965-12-07 Kaiser Aluminium Chem Corp Method for producing active alumina nodules
US3226191A (en) * 1965-03-15 1965-12-28 Kaiser Aluminium Chem Corp Method of producing active alumina and the resulting product
FR2046412A5 (en) * 1969-04-25 1971-03-05 Aluminum Co Of America
US3594982A (en) * 1970-04-20 1971-07-27 Kaiser Aluminium Chem Corp Process for drying unsaturated organic gaseous compounds
DE2059946A1 (en) * 1970-12-05 1972-06-15 Bayer Ag Active, reactive alumina and process for its manufacture
DE2227804A1 (en) * 1972-06-08 1974-01-03 Bayer Ag PROCESS FOR PRODUCING ACTIVE ALUMINUM OXIDE IN PEARL FORM
FR2267982A1 (en) * 1974-04-19 1975-11-14 Alusuisse
US3958341A (en) * 1970-12-05 1976-05-25 Bayer Aktiengesellschaft Process for the production of active aluminum oxide in bead and powder form

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222129A (en) * 1962-02-26 1965-12-07 Kaiser Aluminium Chem Corp Method for producing active alumina nodules
US3226191A (en) * 1965-03-15 1965-12-28 Kaiser Aluminium Chem Corp Method of producing active alumina and the resulting product
FR2046412A5 (en) * 1969-04-25 1971-03-05 Aluminum Co Of America
US3594982A (en) * 1970-04-20 1971-07-27 Kaiser Aluminium Chem Corp Process for drying unsaturated organic gaseous compounds
DE2059946A1 (en) * 1970-12-05 1972-06-15 Bayer Ag Active, reactive alumina and process for its manufacture
US3958341A (en) * 1970-12-05 1976-05-25 Bayer Aktiengesellschaft Process for the production of active aluminum oxide in bead and powder form
DE2227804A1 (en) * 1972-06-08 1974-01-03 Bayer Ag PROCESS FOR PRODUCING ACTIVE ALUMINUM OXIDE IN PEARL FORM
FR2267982A1 (en) * 1974-04-19 1975-11-14 Alusuisse

Also Published As

Publication number Publication date
SE7708565L (en) 1978-01-28
CA1088725A (en) 1980-11-04
NL7708250A (en) 1978-01-31
GB1575218A (en) 1980-09-17
JPS5317600A (en) 1978-02-17
DE2633599A1 (en) 1978-02-02

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Legal Events

Date Code Title Description
RE Withdrawal of published application