FR2041750A1 - Crystalline alumina hydrate of predetd - particle size - Google Patents

Crystalline alumina hydrate of predetd - particle size

Info

Publication number
FR2041750A1
FR2041750A1 FR6916493A FR6916493A FR2041750A1 FR 2041750 A1 FR2041750 A1 FR 2041750A1 FR 6916493 A FR6916493 A FR 6916493A FR 6916493 A FR6916493 A FR 6916493A FR 2041750 A1 FR2041750 A1 FR 2041750A1
Authority
FR
France
Prior art keywords
degrees
pref
predetd
particle size
hydrate
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Withdrawn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
FR6916493A
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.)
Reynolds Metals Co
Original Assignee
Reynolds Metals Co
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 Reynolds Metals Co filed Critical Reynolds Metals Co
Priority to FR6916493A priority Critical patent/FR2041750A1/en
Publication of FR2041750A1 publication Critical patent/FR2041750A1/en
Withdrawn legal-status Critical Current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
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/141—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent
    • C01F7/142—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent with carbon dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The nucleation hydrate is prepared by complete carbonatation of alkalimetal-aluminate (specif. Na), maintaining the temperature below a maximum proportional to the free alkali conc. in the soln. (pref. 29-43 degrees C), after which an alkalialuminate solution (temp. pref. not above 38 degrees C) is stirred in to start the crystallizing process which is completed with constant stirring. The aluminate soln. pref. contains a little organic matter free iron solution as 'sinter' liquid it is pref. a 'Bayer liquid'. Spec. bayerite of surface area 30-100m2/g paricles size 0.4-30 mu is produced at 26-82 degrees C (esp. 65-77 degrees C). The precipitated hydrate is sepd. at 38-54 degrees C. The product is used for filling or coating paper.
FR6916493A 1969-05-21 1969-05-21 Crystalline alumina hydrate of predetd - particle size Withdrawn FR2041750A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6916493A FR2041750A1 (en) 1969-05-21 1969-05-21 Crystalline alumina hydrate of predetd - particle size

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6916493A FR2041750A1 (en) 1969-05-21 1969-05-21 Crystalline alumina hydrate of predetd - particle size

Publications (1)

Publication Number Publication Date
FR2041750A1 true FR2041750A1 (en) 1971-02-05

Family

ID=9034377

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6916493A Withdrawn FR2041750A1 (en) 1969-05-21 1969-05-21 Crystalline alumina hydrate of predetd - particle size

Country Status (1)

Country Link
FR (1) FR2041750A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732742A (en) * 1985-12-17 1988-03-22 Aluminum Pechiney Process for the production at a high level of productivity of aluminum trihydroxide in a high state of purity and with a median diameter of less than 4 micrometers, which is regulated as required
DE102014225400B4 (en) 2013-12-20 2022-02-17 Hyundai Motor Company Regeneration method of raw materials for a hydrogen supply system of a fuel cell
CN115385389A (en) * 2022-04-22 2022-11-25 厦门厦钨新能源材料股份有限公司 Battery anode material precursor and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732742A (en) * 1985-12-17 1988-03-22 Aluminum Pechiney Process for the production at a high level of productivity of aluminum trihydroxide in a high state of purity and with a median diameter of less than 4 micrometers, which is regulated as required
DE102014225400B4 (en) 2013-12-20 2022-02-17 Hyundai Motor Company Regeneration method of raw materials for a hydrogen supply system of a fuel cell
CN115385389A (en) * 2022-04-22 2022-11-25 厦门厦钨新能源材料股份有限公司 Battery anode material precursor and preparation method thereof
CN115385389B (en) * 2022-04-22 2023-12-22 厦门厦钨新能源材料股份有限公司 Battery anode material precursor and preparation method thereof

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Legal Events

Date Code Title Description
ST Notification of lapse