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GB1390353A - High temperature treatment of materials - Google Patents

High temperature treatment of materials

Info

Publication number
GB1390353A
GB1390353A GB4428074A GB4428074A GB1390353A GB 1390353 A GB1390353 A GB 1390353A GB 4428074 A GB4428074 A GB 4428074A GB 4428074 A GB4428074 A GB 4428074A GB 1390353 A GB1390353 A GB 1390353A
Authority
GB
United Kingdom
Prior art keywords
electrode
stationary electrode
arc
electric discharge
expanded
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
GB4428074A
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.)
Tetronics International Ltd
Original Assignee
Tetronics Research and Development Co Ltd
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 Tetronics Research and Development Co Ltd filed Critical Tetronics Research and Development Co Ltd
Priority to GB4428074A priority Critical patent/GB1390353A/en
Publication of GB1390353A publication Critical patent/GB1390353A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32055—Arc discharge
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • 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
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/08—Apparatus
    • 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
    • C22B9/16—Remelting metals
    • C22B9/22—Remelting metals with heating by wave energy or particle radiation
    • C22B9/226—Remelting metals with heating by wave energy or particle radiation by electric discharge, e.g. plasma
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Discharge Heating (AREA)

Abstract

1390353 Arc-discharge arrangement TETRONICS RESEARCH & DEVELOPMENT CO Ltd 7 Feb 1972 [16 Feb 1971 (2) 18 Aug 1971] 44280/74 44281/74 and 44282/74 Divided out of 1390351 Heading H5H [Also in Division C7] An apparatus for establishing an expanded arc column comprises an electrode 1 movable in an orbital path and coacting with a stationary electrode 12, means for establishing an electric discharge between said movable electrode and said stationary electrode, and means for so controlling the rate of orbital movement and the electric discharge conditions that a stable expanded electric discharge is maintained within the zone between the stationary electrode and the path of the movable electrode. The electrode may be consumable, non-consumable, or a plasma gun, for example the arc-constricting type and may be arranged so that its axis generates a cone as in Fig. 1 or a cylinder. An alternating electromagnetic field may be used to augment the arc column or effluent. The stationary electrode may comprise a plurality of segment and means for moving the electrode 1 towards the stationary electrode for starting &c. may be provided and the operating procedure and conditions are described. A method of melting metals, e.g. copper cathodes, by feeding them into an expanded arc column is claimed and described. There are also described furnace arrangement for use with the discharge and processess using the discharges which are claimed in the parent Specification 1,390,351 and the other Specification 1,390,352.
GB4428074A 1971-02-16 1971-02-16 High temperature treatment of materials Expired GB1390353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4428074A GB1390353A (en) 1971-02-16 1971-02-16 High temperature treatment of materials

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB4428174 1971-02-16
GB4428074A GB1390353A (en) 1971-02-16 1971-02-16 High temperature treatment of materials
GB4428274 1971-08-18

Publications (1)

Publication Number Publication Date
GB1390353A true GB1390353A (en) 1975-04-09

Family

ID=27259838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4428074A Expired GB1390353A (en) 1971-02-16 1971-02-16 High temperature treatment of materials

Country Status (1)

Country Link
GB (1) GB1390353A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363259A1 (en) * 1976-08-27 1978-03-24 Tetronics Res & Dev Co Ltd PLASMA REACTOR FOR CARBOTHERMAL REDUCTION
US4361441A (en) * 1979-04-17 1982-11-30 Plasma Holdings N.V. Treatment of matter in low temperature plasmas
EP0452599A3 (en) * 1990-04-20 1993-02-24 Hydro Quebec Arc furnace with consumable electrode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363259A1 (en) * 1976-08-27 1978-03-24 Tetronics Res & Dev Co Ltd PLASMA REACTOR FOR CARBOTHERMAL REDUCTION
US4361441A (en) * 1979-04-17 1982-11-30 Plasma Holdings N.V. Treatment of matter in low temperature plasmas
EP0452599A3 (en) * 1990-04-20 1993-02-24 Hydro Quebec Arc furnace with consumable electrode

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee