ES260753A1 - Improvements in agglomerates and the manufacture thereof - Google Patents

Improvements in agglomerates and the manufacture thereof

Info

Publication number
ES260753A1
ES260753A1 ES0260753A ES260753A ES260753A1 ES 260753 A1 ES260753 A1 ES 260753A1 ES 0260753 A ES0260753 A ES 0260753A ES 260753 A ES260753 A ES 260753A ES 260753 A1 ES260753 A1 ES 260753A1
Authority
ES
Spain
Prior art keywords
alumina
carbon
sodium
solution
aqueous solution
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
ES0260753A
Other languages
Spanish (es)
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 ES260753A1 publication Critical patent/ES260753A1/en
Expired 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
    • C22B21/00—Obtaining aluminium
    • C22B21/0007—Preliminary treatment of ores or scrap or any other metal source
    • 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/28—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using special binding agents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/072—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with aluminium
    • C01B21/0726—Preparation by carboreductive nitridation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/50—Agglomerated particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Agglomerates consisting wholly or mainly of alumina and carbon are formed by adding an alkaline solution to a homogeneous powdered mixture of the alumina and carbon and then granulating and drying the resultant paste. The powders are preferably finer than 150 micron and the ratio of alumina to carbon may be in the stoichiometric ratio for the reduction of the alumina. The alkaline solution may be an aqueous solution of sodium or potassium hydroxide containing 200 to 400 gms. of hydroxide per litre or an aqueous solution of sodium aluminate and sodium hydroxide and 5-20% by weight of the solution is added to the alumina-carbon mixture in an inclined rotatable mixer containing a granulating disc or drum. The granules are dried at 100-200 DEG C. The carbon used may be charcoal, petroleum coke, coal or a caked carbohydrate. Specification 868,301 is referred to.
ES0260753A 1959-09-03 1960-09-02 Improvements in agglomerates and the manufacture thereof Expired ES260753A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR804233A FR1461305A (en) 1959-09-03 1959-09-03 Process for preparing agglomerates based on aluminum oxide and carbon

Publications (1)

Publication Number Publication Date
ES260753A1 true ES260753A1 (en) 1961-04-01

Family

ID=8718802

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0260753A Expired ES260753A1 (en) 1959-09-03 1960-09-02 Improvements in agglomerates and the manufacture thereof

Country Status (8)

Country Link
CH (1) CH395034A (en)
DE (1) DE1188046B (en)
ES (1) ES260753A1 (en)
FR (1) FR1461305A (en)
GB (1) GB901138A (en)
LU (1) LU39124A1 (en)
NL (1) NL254943A (en)
OA (1) OA01576A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU545579B2 (en) * 1980-12-24 1985-07-18 Aluminium Pechiney Improved method of carbochlorination of alumina in a bath of melted salts
FR2496632A1 (en) * 1980-12-24 1982-06-25 Pechiney Aluminium Anhydrous aluminium chloride mfr. - by carbo:chlorination of alumina in molten chloride salt bath contg. packing of alumina agglomerates which increase output
US4491471A (en) * 1984-01-16 1985-01-01 Reynolds Metals Company Composite pellet for use as a carbothermic reduction feed
CA1329461C (en) * 1987-04-14 1994-05-17 Alcan International Limited Process of producing aluminum and titanium nitrides
CA1269404A (en) * 1987-11-03 1990-05-22 Mukesh K. Jain Porous membrane of sinterable refractory metal oxides or silica
US5080879A (en) * 1988-12-01 1992-01-14 Alcan International Limited Process for producing silicon carbide platelets and the platelets so produced

Also Published As

Publication number Publication date
FR1461305A (en) 1966-02-25
CH395034A (en) 1965-07-15
DE1188046B (en) 1965-03-04
NL254943A (en)
GB901138A (en) 1962-07-18
LU39124A1 (en)
OA01576A (en) 1969-09-20

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