• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method of lining "also called brasquing" electro-metallurgical furnaces. The lining is achieved from a concrete, cast on the spot or in precast blocks, comprised of a low porosity and low water retention setting cement, and of an aggregate of which at least one part is a carbonaceous product such as anthracite. This lining has remarkable resistance characteristics to constituents of ignious electrolytic baths based on fluorides and to liquid aluminium. Application to the lining of ignious electrolytic cells for the production of aluminium.
    公开号:SU1050574A3
    申请号:SU802944357
    申请日:1980-07-04
    公开日:1983-10-23
    发明作者:Сюльмон Бенуа；Юдоль Жерар
    申请人:Алюминиюм Пешинэ (Фирма)；
    IPC主号:
    专利说明:

    SP
    about
    ate

    (Ieobretenve relate to non-ferrous metallurgy and, in particular, to the devices and technology of aluminum extrusion by electrolysis of melts. A method is known for making the lining of metallurgical units using blocks made of ogie-free materials Ql, the most close to the invention is technically and achievable the lining of aluminum electrolyzers with blocks made of refractory cement and carbon of the material 2 f. The disadvantage of both methods is the low durability of fu The aim of the invention is to increase the resistance of the blocks to molten cryolite and liquid aluminum. The goal is achieved by the fact that in the known method of lining electrolytic cells to produce aluminum by electrolysis of cryolite and foreign ground melts with blocks of refractory concrete, blocks are made of 15 % quick-set cement containing 10% lime, and 85% filled anthraiite, with the addition of 6% water from the dry mixture, and the blocks dried 450 C. The method is carried out as follows. Until now, it was believed that in contact with electrolyte and aluminum, only carbon 1FODUKTS can be used, with the exception of special urea products, among which boron nitride is of very high cost, which impedes its industrial design. But in the course of the research, the possibility was discovered of using watering, completely carbonaceous products, and in particular concretes formed by cement with a hydraulic or chemical setting and aggregate (generally called an aggregate) consisting of carbonaceous matter, which can be anthracite. Taking into account the working temperature of concrete and the need for extremely low porosity in its manufacture, it is desirable to use cement with a low water content, i.e. Cement with a low content of C-OO, this element largely determines the reduction in fire resistance and water content. Suitable, in particular, cement with chemical setting. It is distinguished by a mix of 25 wt% alumina cement selected from monoaluminate and calcium dialuminate cements, in addition, the cement contains 10% Cc (0. Other types of cement with a low lime content can be used to implement the invention. Such concrete is carried out by classical methods of vibrating compaction or casting into formwork, but it is often preferable to manufacture blocks, the shape and dimensions of which are adapted to carry out the lining followed by their drying for In order to obtain a setting and removal of the main part of the water, they are installed in the electrolyzer and the joints are joined in the usual manner. Example: Concrete was made containing 15% quick-setting cement with a low lime content and 85% calcined anthracite in the form of grains. A 6O liter of water per 1 ton of dry composition was added. From this concrete, blocks were made for lining the walls and pitches of an electrolyzer for aluminum production, and prismatic shape with a trapezoidal cross section and with a uniform weight of about 2 was given to blocks. OO kg, and they were supplied with two hooks for transport 5) of the harness, later cut off with the help of a gas cutter. After drying, blocks were obtained using measurements with the following properties: Volume weight 1.77-1.79 Compressive strength limit, N / cm 5OOO - 6000 Porosity,% 3.5-7 Thermal expansion coefficient between J 20 and 4.3 Yu Blocks they were installed in place inside the electrolyzer and connected between the two by the method of classical printing by means of a mass consisting essentially of. from coke and tar. Compared with the classical taps, carried out with the help of a heavy weight in a heated state, the gain in time is about 30%.
    For several months of work, the fabrication of the proposed method of electrification (U) the electrolyzer thus not: it had no refusals to the baths for the first student.
    10505744
    & Proposed cnocc I him to the floor baths
    权利要求:
    Claims (1)
    [1]
    METHOD OF ELECTRIC ROLIZERS LAYING FOR PRODUCING ALUMINUM BY ELECTROLYSIS OF CRYOLITE-ALUMINUM MELTS with refractory concrete willow blocks, characterized in that, in order to increase the resistance of the blocks to molten cryolite and liquid aluminum, the blocks are made of 15% cement and cement is made of 15% cement 85% filler-anthracite, adding it with 6% water of the dry mixture and blocks Su 1 shat at 450 ° C.
    isis
    1 1050574
    类似技术:
    公开号 | 公开日 | 专利标题
    US3093570A|1963-06-11|Refractory lining for alumina reduction cells
    SU1050574A3|1983-10-23|Method for lining electrolytic cells for producing aluminium by electrolysis of cryolite-alumina melts
    Sullivan et al.1976|Development and testing of superior sulfur concretes
    US3092505A|1963-06-04|Refractory insulating and sealing compound
    McBee et al.1983|Corrosion-resistant sulfur concretes
    CN105130459B|2017-09-19|The unburned prefabricated syphon of aluminium anode carbon baking furnace flue wall
    DE2233894A1|1973-01-25|PROCESS FOR REFRACTORY LINING OF VESSELS FOR METAL MELTING
    US3252813A|1966-05-24|Mineral-bound material
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    GB287363A|1928-03-22|Improvements in compositions for heat insulating and heat resisting purposes
    SU1133244A1|1985-01-07|Refractory composition for making non-roasted products
    SU439487A1|1974-08-15|Ceramic mass
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    RU1830058C|1993-07-23|Mixture for manufacturing heat-insulating cellular concrete
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    AT164496B|1949-11-10|Oven for the electrolytic cleaning of aluminum using the three-layer process
    SU937412A1|1982-06-23|Raw meal for making heat insulating products
    PL114248B1|1981-01-31|Method of manufacture of aluminosilicate refractory concretes,resistant to liquid metals and slags action
    同族专利:
    公开号 | 公开日
    PL122573B1|1982-08-31|
    FR2441001B1|1981-07-17|
    ES485731A1|1980-05-16|
    AU5255379A|1980-05-15|
    FR2441001A1|1980-06-06|
    EP0020576B1|1982-11-03|
    CH641843A5|1984-03-15|
    OA06375A|1981-08-31|
    AT1754T|1982-11-15|
    JPS5823476B2|1983-05-16|
    NO154804C|1987-01-02|
    US4335064A|1982-06-15|
    MX152749A|1985-11-07|
    JPS55500873A|1980-10-30|
    YU269079A|1982-10-31|
    NO793575L|1980-05-10|
    BR7908897A|1981-06-30|
    NO154804B|1986-09-15|
    WO1980000978A1|1980-05-15|
    DE2963988D1|1982-12-09|
    IN152363B|1983-12-31|
    EP0020576A1|1981-01-07|
    AU532166B2|1983-09-22|
    CA1134682A|1982-11-02|
    GR65621B|1980-10-15|
    MY8500054A|1985-12-31|
    PL219449A1|1980-08-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1301833A|1961-05-26|1962-08-24|Electrochimie Soc|Refractory products for the aluminum industry and other highly reducing metals|
    FR1353565A|1963-01-15|1964-02-28|Pechiney Prod Chimiques Sa|Improvement of the refractory and heat-insulating lining of the tanks for the preparation of aluminum by igneous electrolysis|
    US3717602A|1970-11-13|1973-02-20|Didier Werke Ag|Stamping mass for metallurgical furnaces|
    GB1485526A|1974-12-12|1977-09-14|Vyzk Ustav Hutnickej Keramiky|Carbon containing refractory material|
    US4174972A|1975-05-29|1979-11-20|Drouzy Michel L|Nonfibrous castable refractory concrete having high deflection temperature and high compressive strength and process|
    FR2312468B1|1975-05-29|1981-12-11|Ucpi|
    ZA763385B|1976-05-31|1977-05-25|Den Speulhof P Van|A hydraulically setting high-alumina refractory concrete|
    FR2338336B1|1976-01-13|1979-07-06|Pechiney Aluminium|
    DE2731612C2|1976-07-22|1982-09-16|Société Européenne des Produits Réfractaires, 92200 Neuilly-sur-Seine|Cement mixes|
    FR2359090B1|1976-07-22|1983-07-29|Produits Refractaires|DE3068128D1|1980-10-20|1984-07-12|Ina Seito Kk|A method of making cement products having high mechanical strength|
    NO150007C|1982-03-05|1984-08-01|Sintef|RANGE LAYOUT FOR ALUMINUM ELECTRIC OVENERS.|
    JPS6264084U|1985-10-09|1987-04-21|
    NO158882C|1985-11-01|1988-11-09|Mosal Alu Elkem Spigerverk|CATO BOX FOR ELECTROLYCLE CELLS AND PROCEDURES FOR THE MANUFACTURE OF CATALOG FOR ELECTROLYCLE CELLS.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7832055A|FR2441001B1|1978-11-07|1978-11-07|
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