GB1390352A - High temperature treatment of materials - Google Patents

High temperature treatment of materials

Info

Publication number
GB1390352A
GB1390352A GB4426474A GB4426474A GB1390352A GB 1390352 A GB1390352 A GB 1390352A GB 4426474 A GB4426474 A GB 4426474A GB 4426474 A GB4426474 A GB 4426474A GB 1390352 A GB1390352 A GB 1390352A
Authority
GB
United Kingdom
Prior art keywords
particulate material
materials
expanded
titania
feb
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
GB4426474A
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 GB4426474A priority Critical patent/GB1390352A/en
Publication of GB1390352A publication Critical patent/GB1390352A/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
    • 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
    • B01J12/00—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor
    • B01J12/002—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor carried out in the plasma state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/065—Spherical particles
    • 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
    • C22B21/02—Obtaining aluminium with reducing
    • 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
    • C22B34/00—Obtaining refractory metals
    • 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
    • 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
    • H05H1/01—Handling plasma, e.g. of subatomic particles

Abstract

1390352 Titania TETRONICS RESEARCH & DEVELOPMENT CO Ltd 7 Feb 1972 [16 Feb 1971 (2) 18 Aug 1971] 44263/74 44264/74 and 44265/74 Divided out of 1390351 Heading C1N [Also in Divisions H5 and C7] A process for treating particulate material to effect physical and/or chemical changes thereof comprise forming an expanded arc column as defined in the divisional Specification 1,390,353 and feeding said particulate material into the upper part of the expanded arc column. Furnaces using this process are described within the Specification and claimed in the parent Specification 1,390,351. The material may be introduced as a cylindrical curtain. Processes disclosed include treatment of particulate metalbearing material to recover the metal which treatment may include the addition of a reductant with the particulate material, e.g. hydrogen. Carbon-bearing materials may be fed with the particulate material and hydrocarbon may be injected via the stationary electrode of the system. Specific examples are the extraction of aluminium, titania, zirconia and copper from alumina-containing materials, titaniferous ore, zirconium silicate containing-materials, and copper sulphide ore respectively. In the case of zirconium a sodium compound may be introduced into the expanded discharge. Communication with simultaneous spheroidization and refining may be carried out, e.g. of metal powders. Examples using nickel or iron flake are given.
GB4426474A 1971-02-16 1971-02-16 High temperature treatment of materials Expired GB1390352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4426474A GB1390352A (en) 1971-02-16 1971-02-16 High temperature treatment of materials

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB4426374 1971-02-16
GB4426474A GB1390352A (en) 1971-02-16 1971-02-16 High temperature treatment of materials
GB4426574 1971-08-18

Publications (1)

Publication Number Publication Date
GB1390352A true GB1390352A (en) 1975-04-09

Family

ID=27259837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4426474A Expired GB1390352A (en) 1971-02-16 1971-02-16 High temperature treatment of materials

Country Status (1)

Country Link
GB (1) GB1390352A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2347448A1 (en) * 1976-04-09 1977-11-04 Bethlehem Steel Corp PROCESS FOR REDUCING VANADIUM OXIDES
FR2362936A1 (en) * 1976-08-23 1978-03-24 Tetronics Res & Dev Co Ltd CARBOTHERMAL REDUCTION PROCESS OF ALUMINA
FR2446324A1 (en) * 1979-01-15 1980-08-08 Karlovitz Bela Thermal redn. of metal oxide(s) - esp. aluminium oxide by discharging oxide powder into reactor to create vortex and applying electrical discharge
US4361441A (en) * 1979-04-17 1982-11-30 Plasma Holdings N.V. Treatment of matter in low temperature plasmas
EP0305131A2 (en) * 1987-08-27 1989-03-01 TETRONICS RESEARCH & DEVELOPMENT COMPANY LIMITED A process for the recovery of gold
EP2511032A1 (en) * 2009-12-07 2012-10-17 Poongsan Corporation Production method for high purity copper powder using a thermal plasma
CN116666178A (en) * 2023-07-26 2023-08-29 离享未来(德州)等离子科技有限公司 Plasma powder processing device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2347448A1 (en) * 1976-04-09 1977-11-04 Bethlehem Steel Corp PROCESS FOR REDUCING VANADIUM OXIDES
FR2362936A1 (en) * 1976-08-23 1978-03-24 Tetronics Res & Dev Co Ltd CARBOTHERMAL REDUCTION PROCESS OF ALUMINA
FR2446324A1 (en) * 1979-01-15 1980-08-08 Karlovitz Bela Thermal redn. of metal oxide(s) - esp. aluminium oxide by discharging oxide powder into reactor to create vortex and applying electrical discharge
US4361441A (en) * 1979-04-17 1982-11-30 Plasma Holdings N.V. Treatment of matter in low temperature plasmas
EP0305131A2 (en) * 1987-08-27 1989-03-01 TETRONICS RESEARCH & DEVELOPMENT COMPANY LIMITED A process for the recovery of gold
EP0305131A3 (en) * 1987-08-27 1990-01-31 TETRONICS RESEARCH & DEVELOPMENT COMPANY LIMITED A process for the recovery of gold
EP2511032A1 (en) * 2009-12-07 2012-10-17 Poongsan Corporation Production method for high purity copper powder using a thermal plasma
EP2511032A4 (en) * 2009-12-07 2013-10-30 Poongsan Corp Production method for high purity copper powder using a thermal plasma
US9061353B2 (en) 2009-12-07 2015-06-23 Poongsan Corporation Production method for high purity copper powder using a thermal plasma
CN116666178A (en) * 2023-07-26 2023-08-29 离享未来(德州)等离子科技有限公司 Plasma powder processing device
CN116666178B (en) * 2023-07-26 2023-10-03 离享未来(德州)等离子科技有限公司 Plasma powder processing device

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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