FR2446581A1 - Procede pour commander l'arc dans un reacteur a arc de plasma - Google Patents
Procede pour commander l'arc dans un reacteur a arc de plasmaInfo
- Publication number
- FR2446581A1 FR2446581A1 FR8000459A FR8000459A FR2446581A1 FR 2446581 A1 FR2446581 A1 FR 2446581A1 FR 8000459 A FR8000459 A FR 8000459A FR 8000459 A FR8000459 A FR 8000459A FR 2446581 A1 FR2446581 A1 FR 2446581A1
- Authority
- FR
- France
- Prior art keywords
- arc
- reaction layer
- controlling
- reactor
- plasma
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- C22B4/005—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys using plasma jets
-
- 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
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3405—Arrangements for stabilising or constricting the arc, e.g. by an additional gas flow
-
- 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
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3442—Cathodes with inserted tip
-
- 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
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3468—Vortex generators
-
- 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
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid
-
- 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
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3436—Hollow cathodes with internal coolant flow
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Discharge Heating (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Plasma Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Procédé pour commander l'arc dans des réacteurs à plasma comportant deux électrodes 58, 60 et dans lesquels la charge de reaction forme une couche de réaction 118 recouvrant l'une des électrodes et constitue un point de rattachement de l'arc. La couche de réaction 118 est caractérisée en ce qu'elle est non conductrice pendant une période de temps, provoquant la mise en court-circuit d'un arc établi entre l'électrode 58 non recouverte et la couche de réaction. Une matière conductrice est ajoutée à la couche de réaction pour stabiliser l'arc. On prépare du molybdène à peu près pur à partir de bisulfure de molybdène.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/002,288 US4234334A (en) | 1979-01-10 | 1979-01-10 | Arc control in plasma arc reactors |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2446581A1 true FR2446581A1 (fr) | 1980-08-08 |
FR2446581B1 FR2446581B1 (fr) | 1983-03-11 |
Family
ID=21700088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8000459A Granted FR2446581A1 (fr) | 1979-01-10 | 1980-01-10 | Procede pour commander l'arc dans un reacteur a arc de plasma |
Country Status (9)
Country | Link |
---|---|
US (1) | US4234334A (fr) |
JP (1) | JPS5593695A (fr) |
BE (1) | BE881061A (fr) |
CA (1) | CA1112303A (fr) |
DE (1) | DE3000455A1 (fr) |
FR (1) | FR2446581A1 (fr) |
GB (1) | GB2041710B (fr) |
SE (1) | SE8000188L (fr) |
ZA (1) | ZA80156B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2544952A1 (fr) * | 1983-04-19 | 1984-10-26 | Balzers Hochvakuum | Procede de chauffage d'une matiere a chauffer dans un recipient sous vide |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1173784A (fr) * | 1981-07-30 | 1984-09-04 | William H. Gauvin | Reacteur a transport d'arc au plasma pour la chimie et la metallurgie |
US4489041A (en) * | 1983-07-06 | 1984-12-18 | Allied Corporation | Non plugging falling film plasma reactor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1296233A (fr) * | 1961-07-26 | 1962-06-15 | Sueddeutsche Kalkstickstoff | Procédé et dispositif pour produire des réactions électrothermiques en phase gazeuse |
FR1418773A (fr) * | 1963-08-01 | 1965-11-26 | Applic Electro Thermiques Soc | Perfectionnements apportés à l'élaboration de métaux réfractaires et présentant une grande réactivité chimique |
FR1550516A (fr) * | 1967-03-07 | 1968-12-20 | ||
FR2329753A1 (fr) * | 1975-11-03 | 1977-05-27 | Bethlehem Steel Corp | Procede de reduction de minerais |
FR2347448A1 (fr) * | 1976-04-09 | 1977-11-04 | Bethlehem Steel Corp | Procede pour reduire des oxydes de vanadium |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3020151A (en) * | 1957-02-26 | 1962-02-06 | John S Nachtman | Beneficiation and recovery of metals |
CH400107A (de) * | 1961-10-11 | 1965-10-15 | Lonza Ag | Verfahren zur Gewinnung von Methanol durch Verseifung von Methylacetat |
US3429691A (en) * | 1966-08-19 | 1969-02-25 | Aerojet General Co | Plasma reduction of titanium dioxide |
US3524006A (en) * | 1967-10-19 | 1970-08-11 | Qualitats Und Edelstahl Kom Ve | Method and apparatus for controlling arc discharge in plasma arc furnaces |
US3505460A (en) * | 1968-05-15 | 1970-04-07 | Westinghouse Electric Corp | Electric arc vacuum furnace employing nonconsumable electrode |
USRE28570E (en) | 1971-02-16 | 1975-10-14 | High temperature treatment of materials | |
BE791550A (fr) * | 1971-11-20 | 1973-03-16 | Max Planck Gesellschaft | Procede et dispositif pour le traitement d'un materiau au moyendu plasma d'un arc electrique |
-
1979
- 1979-01-10 US US06/002,288 patent/US4234334A/en not_active Expired - Lifetime
-
1980
- 1980-01-08 DE DE19803000455 patent/DE3000455A1/de not_active Withdrawn
- 1980-01-08 CA CA343,208A patent/CA1112303A/fr not_active Expired
- 1980-01-09 BE BE0/198900A patent/BE881061A/fr not_active IP Right Cessation
- 1980-01-10 JP JP94680A patent/JPS5593695A/ja active Pending
- 1980-01-10 FR FR8000459A patent/FR2446581A1/fr active Granted
- 1980-01-10 GB GB8000880A patent/GB2041710B/en not_active Expired
- 1980-01-10 SE SE8000188A patent/SE8000188L/ not_active Application Discontinuation
- 1980-01-10 ZA ZA00800156A patent/ZA80156B/xx unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1296233A (fr) * | 1961-07-26 | 1962-06-15 | Sueddeutsche Kalkstickstoff | Procédé et dispositif pour produire des réactions électrothermiques en phase gazeuse |
FR1418773A (fr) * | 1963-08-01 | 1965-11-26 | Applic Electro Thermiques Soc | Perfectionnements apportés à l'élaboration de métaux réfractaires et présentant une grande réactivité chimique |
FR1550516A (fr) * | 1967-03-07 | 1968-12-20 | ||
FR2329753A1 (fr) * | 1975-11-03 | 1977-05-27 | Bethlehem Steel Corp | Procede de reduction de minerais |
FR2347448A1 (fr) * | 1976-04-09 | 1977-11-04 | Bethlehem Steel Corp | Procede pour reduire des oxydes de vanadium |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2544952A1 (fr) * | 1983-04-19 | 1984-10-26 | Balzers Hochvakuum | Procede de chauffage d'une matiere a chauffer dans un recipient sous vide |
Also Published As
Publication number | Publication date |
---|---|
JPS5593695A (en) | 1980-07-16 |
DE3000455A1 (de) | 1980-07-31 |
FR2446581B1 (fr) | 1983-03-11 |
SE8000188L (sv) | 1980-07-11 |
CA1112303A (fr) | 1981-11-10 |
GB2041710B (en) | 1983-01-06 |
ZA80156B (en) | 1981-01-28 |
BE881061A (fr) | 1980-07-09 |
US4234334A (en) | 1980-11-18 |
GB2041710A (en) | 1980-09-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |