GB638810A - Improvements relating to electrodes for electric furnaces and methods for protectingthe same - Google Patents

Improvements relating to electrodes for electric furnaces and methods for protectingthe same

Info

Publication number
GB638810A
GB638810A GB18707/48A GB1870748A GB638810A GB 638810 A GB638810 A GB 638810A GB 18707/48 A GB18707/48 A GB 18707/48A GB 1870748 A GB1870748 A GB 1870748A GB 638810 A GB638810 A GB 638810A
Authority
GB
United Kingdom
Prior art keywords
electrodes
aluminium
per cent
furnace
july
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
GB18707/48A
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.)
Societe Anonyme pour lIndustrie de lAluminium SA
Original Assignee
Societe Anonyme pour lIndustrie de lAluminium 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 Societe Anonyme pour lIndustrie de lAluminium SA filed Critical Societe Anonyme pour lIndustrie de lAluminium SA
Publication of GB638810A publication Critical patent/GB638810A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
    • C04B41/5092—Phosphate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12—Anodes
    • C25C3/125—Anodes based on carbon
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/06—Electrodes
    • H05B7/08—Electrodes non-consumable
    • H05B7/085—Electrodes non-consumable mainly consisting of carbon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

638,810. Furnace electrodes. SOC. ANON POUS L'INDUSTRIE DE L'ALUMINIUM. July 12, 1948, No. 18707. Convention date, July 12, 1947. [Class 39 (iii)] [Also in Group XXXVI] A carbon or graphite electrode used in the electrolysis of aluminium or in an electric furnace is protected by impregnation before use in an aqueous solution of alkali metal borate and mono- or di-basic ammonium phosphate with a small amount of a colloidal binding agent such as gum arabic. The solution contains borax from 10 per cent up to saturation at room temperature preferably 25-35 per cent, and gum arabic 0.3-5.0 per cent. The electrodes are impregnated and dried just before setting them in a furnace or as negative electrodes in the three layer process of refining aluminium as described in Specification 469,361, [Group XXXVI], which is referred to.
GB18707/48A 1947-07-12 1948-07-12 Improvements relating to electrodes for electric furnaces and methods for protectingthe same Expired GB638810A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH968717X 1947-07-12
CH638810X 1947-07-12

Publications (1)

Publication Number Publication Date
GB638810A true GB638810A (en) 1950-06-14

Family

ID=25737802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18707/48A Expired GB638810A (en) 1947-07-12 1948-07-12 Improvements relating to electrodes for electric furnaces and methods for protectingthe same

Country Status (2)

Country Link
FR (1) FR968717A (en)
GB (1) GB638810A (en)

Also Published As

Publication number Publication date
FR968717A (en) 1950-12-04

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