US4145403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc heater method for producing metal oxides
Assignee: Individual
•
Filing: 1977-09-29
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Granted: 1979-03-20
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Expires: 1997-09-29
Abstract
Abstract An arc heater method and system for producing a high energy source characterized by a housing forming a mixing compartment, a plurality of arc heaters radially mounted on the housing and communicating with the mixing compartment, a reactor communicating with the downstream end of the mixing compartment with a reduced opening therebetween, inlet means at the downstream end of the compartment for introducing an oxidizable metal compound into the reactor, and means within the mixing compartment for flowing superheated gases from the arc heaters at the upstream end of the compartment and into the reactor.
Inventors
- 👤 Maurice G. Fey
- 👤 Charles B. Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:47
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/44; C; C01; C01F; C01F5/00; C01F5/02; C01F7/00; C01F7/02; C01F7/30; C01F7/302; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; C01G25/00; C01G25/02; C01G27/00; C01G27/02; H05B; H05B7/00; H05B7/18; H05B7/185; H05H1/34; H05H1/40; H05H1/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
184 words
In a process for producing metal oxides involving providing a polyphase arc heater system characterized by a plurality of arc heaters having arc chambers communicating with an elongated central mixing compartment; striking an electric arc in an axial gap between generally hollow, cylindrical electrodes spaced along a common axis that form the arc chamber in each of the intercommunicating arc heater chambers; causing an arc to rotate within the electrodes; directing oxygen through the gap into the arc chamber to thereby form an elongated arc and heated oxygen stream at a temperature of from about 1600° to about 2300° C.; projecting the turbulent arc-heated oxygen stream generally radially into the central mixing compartment; the improvement comprising the steps of flowing the turbulent arc-heated oxygen stream through longitudinal channel means in the central mixing compartment to straighten the flow direction of the stream; introducing into the arc-heated oxygen stream a halide of a metal selected from the group consisting of Ti, Zr, Hf, Mg, and Al to form reaction products including an oxide of the metal and a halogen gas; and separating the reaction products.
Claim 2
Dependent Claim
184 words
In a process for producing metal oxides involving providing a polyphase arc heater system characterized by a plurality of arc heaters having arc chambers communicating with an elongated central mixing compartment; striking an electric arc in an axial gap between generally hollow, cylindrical electrodes spaced along a common axis that form the arc chamber in each of the intercommunicating arc heater chambers; causing an arc to rotate within the electrodes; directing oxygen through the gap into the arc chamber to thereby form an elongated arc and heated oxygen stream at a temperature of from about 1600° to about 2300° C.; projecting the turbulent arc-heated oxygen stream generally radially into the central mixing compartment; the improvement comprising the steps of flowing the turbulent arc-heated oxygen stream through longitudinal channel means in the central mixing compartment to straighten the flow direction of the stream; introducing into the arc-heated oxygen stream a halide of a metal selected from the group consisting of Ti, Zr, Hf, Mg, and Al to form reaction products including an oxide of the metal and a halogen gas; and separating the reaction products.
Claim 3
Dependent Claim
29 words
The process of claim 1 wherein particles of abrasive material are directed longitudinally into the central mixing compartment and onto downstream surfaces to prevent deposition of reaction materials thereon.
Claim 4
Dependent Claim
38 words
The process of claim 1 wherein additional oxygen is passed through channel means in the walls of the control mixing compartment in heat exchange relationship therewith and then passing the preheated oxygen into the elongated arc-heated oxygen stream.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |