US2495148A - Method of manufacturing continuous electrodes - Google Patents

Method of manufacturing continuous electrodes Download PDF

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Publication number
US2495148A
US2495148A US684096A US68409646A US2495148A US 2495148 A US2495148 A US 2495148A US 684096 A US684096 A US 684096A US 68409646 A US68409646 A US 68409646A US 2495148 A US2495148 A US 2495148A
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US
United States
Prior art keywords
mass
electrode
pipe
lye
sulphite
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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 - Lifetime
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US684096A
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English (en)
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Tanberg Ragnar
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Individual
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Individual
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    • 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
    • H05B7/09—Self-baking electrodes, e.g. Söderberg type electrodes
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder

Definitions

  • the known type of continuously self-burning electrodes is based on melting down in a sheet iron pipe a plastic mass consisting of crushed anthracite or coke, to which are added pitch and tar as binding agent. As this mass becomes completely liquefied by heating and firstly assumes a solid state and then is coked at relatively high temperatures, it is necessary that the sheet iron pipe follows the electrode mass down into the bath and is here corroded away with the same. it is here to be noted that coking of the mass is necessary in order to obtain a sufliclent electrical conductivity.
  • the sheet iron pipe may not be separated from the mass is that the latter sticks and adheres to the sheet iron.
  • the disadvantage of this electrode is that the sheet iron envelope increases the cost of the electrode, nrlinarily because of the relatively high costs of manufacturing the envelope, which generally takes place by welding or riveting. Further the addition of iron received by the bath through melting down of the sheet pipe may act uniavorably in certain metallurgical processes.
  • a constructional form oi self-burning elec trodes has been suggested in which the sheet iron pipe or mantel is avoided by suspending the electrode at its lower portion, which has heen burnt to such a degree that it has sufiicient to permit of the attachment of the suspension means.
  • the diiliculty of constructing a continuous electrode without an iron mantel has been that has had no binding agent for the mass which,
  • the binding agent is of such a nature that it binds and cokes at a relatively moderate temperature, at 200-300 C., for example it is possible in practice in this zone, without difllculty, to supply the current by means of ordinary current supplying laws.
  • the quantity of suiphite lye which should be added in order to obtain a suflicient binding power may advantageously be fixed at between ill-35%, and that the subsequent drying may suitably take place at a temperature of above loll C.-"lld C.
  • waste lye as used above and in the claims shall be understood waste lye from the production of sulphlte cellulose, regardless of Whether it refers to the ordinary sulphite process, which operates with calcium bisulphite, or other sulphite processes, for example one in which ammonia bisulphite is used.
  • a solution according to the invention may eventually also be produced by the mixing of its individual components.
  • the invention will be particularly applicable in connection with a stationary pipe or mantel, mounted above the bath, which shapes the electrode and holds it together until the mass, through the influence of heat, has turned consistent so that it may be passed down into the furnace as it is being consumed.
  • a casing of heat resisting material through which the hot gases from the melting bath are passed in such a way that the pipe and consequently the electrode mass is heated to a few hundred degrees, so that the mass which is passed through the pipe stiffens and hardens and forms a firm, glutinated mass.
  • this embodiment is shown diagrammatically: I designates the furnace arch, 2 the bath surface and 3 the casing of heat resisting material mounted on the furnace arch.
  • the shaping pipe 4 which at the top is provided with a funnel shaped expansion 5 in which the electrode mass consisting of a premixed mass of, for example 90% cokeand/or anthracite powder and about concentrated sulphite lye is stamped down.
  • the hot gases from the furnace pass through the casing 3 and out through a discharge pipe 1, which is provided with a control damper 8. Through influence of heat from the gas the electrode mass will first stiffen and thereupon coke to a consistent electrode.
  • Below the pipe 4 are mounted current supplying jaws, in-
  • the current is supplied through the lead III, which is suitably passed through the casing I.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Discharge Heating (AREA)
  • Processing Of Solid Wastes (AREA)
US684096A 1943-05-08 1946-07-17 Method of manufacturing continuous electrodes Expired - Lifetime US2495148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO244709X 1943-05-08

Publications (1)

Publication Number Publication Date
US2495148A true US2495148A (en) 1950-01-17

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ID=19904980

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Application Number Title Priority Date Filing Date
US684096A Expired - Lifetime US2495148A (en) 1943-05-08 1946-07-17 Method of manufacturing continuous electrodes

Country Status (4)

Country Link
US (1) US2495148A (en, 2012)
CH (1) CH244709A (en, 2012)
GB (1) GB614107A (en, 2012)
SE (1) SE120959C1 (en, 2012)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526876A (en) * 1948-05-08 1950-10-24 Elektrokemisk As Method of handling continuous electrodes
US3619465A (en) * 1968-12-09 1971-11-09 Montedison Spa Method for operating self-baking electrodes
US4527329A (en) * 1978-10-31 1985-07-09 Carboindustrial S.A. Process for the manufacture "in situ" of carbon electrodes
US4704230A (en) * 1983-03-08 1987-11-03 Georgia-Pacific Corporation Lignosulfonate/urea binder for particulate composites
US5360465A (en) * 1989-09-29 1994-11-01 Georgia-Pacific Corporation Particulate fertilizer dust control

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE294661C (en, 2012) *
US617979A (en) * 1899-01-17 Method of manufacturing graphite articles
US704993A (en) * 1900-01-08 1902-07-15 Frederick C Weber Electric smelting-furnace.
US722411A (en) * 1902-05-15 1903-03-10 Eugene Howard Moore Electric furnace.
US964268A (en) * 1906-11-09 1910-07-12 Continuous Zinc Furnace Company Apparatus for smelting ores yielding a volatile metal.
US1434395A (en) * 1920-01-30 1922-11-07 Metal & Thermit Corp Electric furnace
US1483507A (en) * 1923-07-06 1924-02-12 Rosstacony Crucible Company Refractory article and method of making the same
US1498582A (en) * 1921-01-24 1924-06-24 Norske Elektrokemisk Ind As Electrode holder
US1544151A (en) * 1923-03-20 1925-06-30 Union Carbide Corp Method of and apparatus for forming continuous electrodes
US1640735A (en) * 1923-05-16 1927-08-30 Norske Elektrokemisk Ind As Process of making channeled continuous electrodes
US1757695A (en) * 1925-09-30 1930-05-06 Norske Elektrokemisk Ind As Electrode
US1983267A (en) * 1930-07-18 1934-12-04 Theodore C Browne Electrical conductive element and process of manufacture
US2073356A (en) * 1933-04-18 1937-03-09 Norske Elektrokemisk Ind As Electrode suspension
AT154016B (de) * 1934-04-07 1938-08-10 Nicolaas Cramer Verfahren zur Herstellung von ungebrannten feuerfesten und/oder isolierenden Massen, Steinen, Auskleidungen, Schutzanstrichen u. dgl. aus keramischen Stoffen.
GB500455A (en) * 1936-12-24 1939-02-09 Robert Mautsch Improvements relating to electric furnaces for melting metals
US2154271A (en) * 1937-03-02 1939-04-11 Carborundum Co Refractory article
US2159183A (en) * 1928-10-05 1939-05-23 Norske Elektrokemisk Ind As Self-baking electrode
US2169563A (en) * 1936-07-08 1939-08-15 Det Norske Aktiesclskab For El Electrode and its suspension
US2185772A (en) * 1935-12-23 1940-01-02 Carborundum Co Mold for refractory cast materials

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US617979A (en) * 1899-01-17 Method of manufacturing graphite articles
DE294661C (en, 2012) *
US704993A (en) * 1900-01-08 1902-07-15 Frederick C Weber Electric smelting-furnace.
US722411A (en) * 1902-05-15 1903-03-10 Eugene Howard Moore Electric furnace.
US964268A (en) * 1906-11-09 1910-07-12 Continuous Zinc Furnace Company Apparatus for smelting ores yielding a volatile metal.
US1434395A (en) * 1920-01-30 1922-11-07 Metal & Thermit Corp Electric furnace
US1498582A (en) * 1921-01-24 1924-06-24 Norske Elektrokemisk Ind As Electrode holder
US1544151A (en) * 1923-03-20 1925-06-30 Union Carbide Corp Method of and apparatus for forming continuous electrodes
US1640735A (en) * 1923-05-16 1927-08-30 Norske Elektrokemisk Ind As Process of making channeled continuous electrodes
US1483507A (en) * 1923-07-06 1924-02-12 Rosstacony Crucible Company Refractory article and method of making the same
US1757695A (en) * 1925-09-30 1930-05-06 Norske Elektrokemisk Ind As Electrode
US2159183A (en) * 1928-10-05 1939-05-23 Norske Elektrokemisk Ind As Self-baking electrode
US1983267A (en) * 1930-07-18 1934-12-04 Theodore C Browne Electrical conductive element and process of manufacture
US2073356A (en) * 1933-04-18 1937-03-09 Norske Elektrokemisk Ind As Electrode suspension
AT154016B (de) * 1934-04-07 1938-08-10 Nicolaas Cramer Verfahren zur Herstellung von ungebrannten feuerfesten und/oder isolierenden Massen, Steinen, Auskleidungen, Schutzanstrichen u. dgl. aus keramischen Stoffen.
US2185772A (en) * 1935-12-23 1940-01-02 Carborundum Co Mold for refractory cast materials
US2169563A (en) * 1936-07-08 1939-08-15 Det Norske Aktiesclskab For El Electrode and its suspension
GB500455A (en) * 1936-12-24 1939-02-09 Robert Mautsch Improvements relating to electric furnaces for melting metals
US2154271A (en) * 1937-03-02 1939-04-11 Carborundum Co Refractory article

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526876A (en) * 1948-05-08 1950-10-24 Elektrokemisk As Method of handling continuous electrodes
US3619465A (en) * 1968-12-09 1971-11-09 Montedison Spa Method for operating self-baking electrodes
US4527329A (en) * 1978-10-31 1985-07-09 Carboindustrial S.A. Process for the manufacture "in situ" of carbon electrodes
US4704230A (en) * 1983-03-08 1987-11-03 Georgia-Pacific Corporation Lignosulfonate/urea binder for particulate composites
US5360465A (en) * 1989-09-29 1994-11-01 Georgia-Pacific Corporation Particulate fertilizer dust control

Also Published As

Publication number Publication date
GB614107A (en) 1948-12-09
SE120959C1 (en, 2012) 1948-02-24
CH244709A (de) 1946-09-30

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