FR2187694A1 - Thermal reduction of red mud - from Bayer aluminium process using cpd contng calcium oxide - Google Patents

Thermal reduction of red mud - from Bayer aluminium process using cpd contng calcium oxide

Info

Publication number
FR2187694A1
FR2187694A1 FR7320439A FR7320439A FR2187694A1 FR 2187694 A1 FR2187694 A1 FR 2187694A1 FR 7320439 A FR7320439 A FR 7320439A FR 7320439 A FR7320439 A FR 7320439A FR 2187694 A1 FR2187694 A1 FR 2187694A1
Authority
FR
France
Prior art keywords
contng
cao
red mud
cpd
calcium 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
FR7320439A
Other languages
French (fr)
Other versions
FR2187694B1 (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.)
MAGYAR ALUMINIUM
Magyar Aluminiumipari Troeszt
Original Assignee
MAGYAR ALUMINIUM
Magyar Aluminiumipari Troeszt
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 MAGYAR ALUMINIUM, Magyar Aluminiumipari Troeszt filed Critical MAGYAR ALUMINIUM
Publication of FR2187694A1 publication Critical patent/FR2187694A1/en
Application granted granted Critical
Publication of FR2187694B1 publication Critical patent/FR2187694B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • 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
    • 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
    • C01F7/066—Treatment of the separated residue
    • 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
    • C01F7/38—Preparation of aluminium oxide by thermal reduction of aluminous minerals
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/02—General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Sludge (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Manufacture Of Iron (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The red mud is melted, the sludge formed and the ferrous prodt. are sepd. and the Na2O and Al oxide content of the reduced sludge are recuperated by scrubbing. Specif. chalk or calcite or cpds. contng. CaO are added to the red mud in molar proportions, based on the dry wt. of the latter. of CaO:SiO2 = 1.8-2.2, CaO:TiO2 = 0.9-1.1; CaO:Fe2O3 = 1.8-2.2; CaO: (Al2O3-Na2O) = 0-12/7, the mixt. is fused, and after sepn of iron sludge, the reduced sludge, contng. sodium and calcium aluminate, is scrubbed into 2 phases using a scrubbing agent and Na2CO3 or into a single phase using a soln of Na2CO3 contng. a scrubbing agent.
FR7320439A 1972-06-06 1973-06-05 Thermal reduction of red mud - from Bayer aluminium process using cpd contng calcium oxide Granted FR2187694A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUMA002364 HU164466B (en) 1972-06-06 1972-06-06

Publications (2)

Publication Number Publication Date
FR2187694A1 true FR2187694A1 (en) 1974-01-18
FR2187694B1 FR2187694B1 (en) 1976-09-17

Family

ID=10998580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7320439A Granted FR2187694A1 (en) 1972-06-06 1973-06-05 Thermal reduction of red mud - from Bayer aluminium process using cpd contng calcium oxide

Country Status (8)

Country Link
JP (1) JPS5324033B2 (en)
AU (1) AU474476B2 (en)
DD (1) DD105004A5 (en)
DE (1) DE2328674A1 (en)
FR (1) FR2187694A1 (en)
HU (1) HU164466B (en)
IT (1) IT1017518B (en)
RO (1) RO64744A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007516922A (en) * 2003-12-24 2007-06-28 マウント・アスパイアリング・ジオケミストリー・コンサルタンツ・プロプライエタリー・リミテッド Porous granular material for fluid treatment, cementitious composition and method for producing them
CN1300348C (en) * 2005-09-22 2007-02-14 贵阳铝镁设计研究院 Method for recovering iron from red mud
CN115159552B (en) * 2022-07-04 2024-01-26 重庆大学 Method for recycling aluminum oxide from aluminum-containing resource
CN118127341A (en) * 2024-02-05 2024-06-04 河北文丰新材料有限公司 Method for recycling aluminum resources in red mud

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR824417A (en) * 1936-07-20 1938-02-08 Montedison Spa Process for preparing alumina
US2964383A (en) * 1958-09-05 1960-12-13 Reynolds Metals Co Processing of ferruginous aluminum ores

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR824417A (en) * 1936-07-20 1938-02-08 Montedison Spa Process for preparing alumina
US2964383A (en) * 1958-09-05 1960-12-13 Reynolds Metals Co Processing of ferruginous aluminum ores

Also Published As

Publication number Publication date
JPS5324033B2 (en) 1978-07-18
DE2328674A1 (en) 1974-01-10
IT1017518B (en) 1977-08-10
AU474476B2 (en) 1976-07-22
HU164466B (en) 1974-02-28
AU5640573A (en) 1974-12-05
JPS5016608A (en) 1975-02-21
RO64744A (en) 1980-04-15
FR2187694B1 (en) 1976-09-17
DD105004A5 (en) 1974-04-05

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Legal Events

Date Code Title Description
ST Notification of lapse