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GB754008A - Improvements in or relating to processes for agglomerating alumina - Google Patents

Improvements in or relating to processes for agglomerating alumina

Info

Publication number
GB754008A
GB754008A GB8488/54A GB848854A GB754008A GB 754008 A GB754008 A GB 754008A GB 8488/54 A GB8488/54 A GB 8488/54A GB 848854 A GB848854 A GB 848854A GB 754008 A GB754008 A GB 754008A
Authority
GB
United Kingdom
Prior art keywords
alumina
relating
processes
bayerite
temperatures
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
GB8488/54A
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.)
Pechiney SA
Original Assignee
Pechiney SA
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 Pechiney SA filed Critical Pechiney SA
Publication of GB754008A publication Critical patent/GB754008A/en
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
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/16—Clays or other mineral silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

In a process for agglomerating alumina, a trihydrate of alumina, preferably bayerite, is dehydrated at temperatures between 160 DEG and 500 DEG C. so that the water is removed immediately it is driven from the alumina, e.g. by vacuum distillation or by heat and suspension in the hot gas. The product may then be ground to required size, is shaped by mixing with water, allowed to harden in amoist atmosphere between 20 DEG -150 DEG C. to allow partial rehydration of aluminium into bayerite and then subjected to further treatment at temperatures between 250-600 DEG C. to effect at least partial dehydration.
GB8488/54A 1953-03-25 1954-03-23 Improvements in or relating to processes for agglomerating alumina Expired GB754008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1008722X 1953-03-25

Publications (1)

Publication Number Publication Date
GB754008A true GB754008A (en) 1956-08-01

Family

ID=9567596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8488/54A Expired GB754008A (en) 1953-03-25 1954-03-23 Improvements in or relating to processes for agglomerating alumina

Country Status (3)

Country Link
DE (1) DE1008722B (en)
FR (2) FR1077163A (en)
GB (1) GB754008A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1280231B (en) * 1962-05-04 1968-10-17 Kaiser Aluminium Chem Corp Process for the production of active alumina grains
DE1229055B (en) * 1962-05-18 1966-11-24 Aluminum Co Of America Process for the production of alumina spheres of high mechanical strength
DE1204209B (en) * 1962-12-21 1965-11-04 Gulf Research Development Co Process for the production of activated aluminum oxide
FR1450633A (en) * 1965-06-29 1966-06-24 Pechiney Saint Gobain Agglomerated adsorbent products based on molecular sieve grains
DE2308890C2 (en) * 1973-02-23 1983-03-31 Kali-Chemie Ag, 3000 Hannover Process for the production of spherical particles from active alumina with high mechanical strength

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE801154C (en) * 1948-10-02 1950-12-28 Steinkohlenbergwerk Rheinpreus Process for the production of aluminum oxide suitable as a desiccant

Also Published As

Publication number Publication date
FR1077163A (en) 1954-11-04
DE1008722B (en) 1957-05-23
FR65167E (en) 1956-01-27

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