FR2037005A1 - Low-impurity aluminium oxide from bauxite - Google Patents

Low-impurity aluminium oxide from bauxite

Info

Publication number
FR2037005A1
FR2037005A1 FR6913900A FR6913900A FR2037005A1 FR 2037005 A1 FR2037005 A1 FR 2037005A1 FR 6913900 A FR6913900 A FR 6913900A FR 6913900 A FR6913900 A FR 6913900A FR 2037005 A1 FR2037005 A1 FR 2037005A1
Authority
FR
France
Prior art keywords
bauxite
al2o3
impurities
low
aluminium oxide
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.)
Granted
Application number
FR6913900A
Other languages
French (fr)
Other versions
FR2037005B1 (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.)
ChampionX LLC
Original Assignee
Nalco Chemical 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
Priority to NL6906483A priority Critical patent/NL6906483A/xx
Application filed by Nalco Chemical Co filed Critical Nalco Chemical Co
Priority to FR6913900A priority patent/FR2037005A1/en
Publication of FR2037005A1 publication Critical patent/FR2037005A1/en
Application granted granted Critical
Publication of FR2037005B1 publication Critical patent/FR2037005B1/fr
Granted 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
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud
    • C01F7/0653—Separation of the insoluble residue, e.g. of red mud characterised by the flocculant added to the slurry

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Preparation of Al2O3 by digestion of bauxite, in aqueous solution, with a strong base and heating, separating the insoluble impurities and recovery of Al2O3 3H2O from the solution; at least 0.1% (or impurities) of a mixture of starch and an acrylic polymer (in the proportions of 10:1 to 200:1) to the digested mixture. The polymer has molecular weight at least 50,000 and at least 80% of its units are acrylic acid or its salts. Prepared are polyacrylic acid and sodium polyacrylate but co-polymers of these with other double bond monomers may be used. The process gives efficient removal of impurities for the Al2O3.
FR6913900A 1969-04-30 1969-04-30 Low-impurity aluminium oxide from bauxite Granted FR2037005A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL6906483A NL6906483A (en) 1969-04-30 1969-04-25
FR6913900A FR2037005A1 (en) 1969-04-30 1969-04-30 Low-impurity aluminium oxide from bauxite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6913900A FR2037005A1 (en) 1969-04-30 1969-04-30 Low-impurity aluminium oxide from bauxite

Publications (2)

Publication Number Publication Date
FR2037005A1 true FR2037005A1 (en) 1970-12-31
FR2037005B1 FR2037005B1 (en) 1973-04-06

Family

ID=9033348

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6913900A Granted FR2037005A1 (en) 1969-04-30 1969-04-30 Low-impurity aluminium oxide from bauxite

Country Status (2)

Country Link
FR (1) FR2037005A1 (en)
NL (1) NL6906483A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487325A1 (en) * 1980-07-23 1982-01-29 American Cyanamid Co PROCESS FOR FLOCCULATION OF RED SLUDGE IN THE PREPARATION OF ALUMINA
FR2518985A1 (en) * 1981-12-30 1983-07-01 American Cyanamid Co ALUMINA RECOVERY PROCESS

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1470568A (en) * 1965-03-04 1967-02-24 Atlas Chem Ind Flocculation process and composition for its implementation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1470568A (en) * 1965-03-04 1967-02-24 Atlas Chem Ind Flocculation process and composition for its implementation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487325A1 (en) * 1980-07-23 1982-01-29 American Cyanamid Co PROCESS FOR FLOCCULATION OF RED SLUDGE IN THE PREPARATION OF ALUMINA
FR2518985A1 (en) * 1981-12-30 1983-07-01 American Cyanamid Co ALUMINA RECOVERY PROCESS

Also Published As

Publication number Publication date
NL6906483A (en) 1970-10-27
FR2037005B1 (en) 1973-04-06

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Legal Events

Date Code Title Description
ST Notification of lapse