GB1386386A - Control of electrolytic bath for aluminium production - Google Patents
Control of electrolytic bath for aluminium productionInfo
- Publication number
- GB1386386A GB1386386A GB1449173A GB1449173A GB1386386A GB 1386386 A GB1386386 A GB 1386386A GB 1449173 A GB1449173 A GB 1449173A GB 1449173 A GB1449173 A GB 1449173A GB 1386386 A GB1386386 A GB 1386386A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alcl
- current
- computer
- voltage
- bath
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/20—Automatic control or regulation of cells
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
1386386 Automatic control of electrolysis ALUMINUM CO OF AMERICA 26 March 1973 [6 April 1972] 14491/73 Heading G3R [Also in Division C7] In the production of aluminium from a bath containing aluminium chloride, the concentration of AlCl 3 is detected and periodically adjusted. The concentration is detected by measuring the bath conductivity, the voltage at constant current, the current, at constant voltage or by computing the total cell resistance from measurements of the voltage, the current and the counter electromotive force. The operation may be performed automatically by a computer working with an AlCl 3 feeder. The bath may be alkali metal chloride or alkaline earth metal chloride. The AlCl 3 may be solid, liquid, dissolved in fused salt, gaseous or may be transported in a carrier gas e.g. Cl 2 , CO 2 , N2. Readings may be taken at 30 sec-3 min intervals. In Fig. 4 device 3 measures the current flowing through cells 2 to 2n. R.C. circuits prevent extraneous electrical noise reaching the digital computer 1 and provide averaged current and voltage signals. These are passed through analog/digital converter 4 before reaching computer 1. The computer may compare the signals with standards obtained from chemical analysis then transmit independent commands to the feeders. The feeders may be screw conveyers, solenoid operated gravity feed conveyers or valves admitting liquid or gaseous AlCl 3 .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00241607A US3847761A (en) | 1972-04-06 | 1972-04-06 | Bath control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1386386A true GB1386386A (en) | 1975-03-05 |
Family
ID=22911395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1449173A Expired GB1386386A (en) | 1972-04-06 | 1973-03-26 | Control of electrolytic bath for aluminium production |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US3847761A (en) |
| JP (1) | JPS5215361B2 (en) |
| AT (1) | AT336907B (en) |
| BR (1) | BR7302510D0 (en) |
| CA (1) | CA992027A (en) |
| CH (1) | CH577035A5 (en) |
| CS (1) | CS203056B2 (en) |
| DD (1) | DD103270A5 (en) |
| DE (1) | DE2317672C3 (en) |
| FR (1) | FR2179099B1 (en) |
| GB (1) | GB1386386A (en) |
| HU (1) | HU170661B (en) |
| IT (1) | IT980111B (en) |
| NL (1) | NL7304873A (en) |
| PH (1) | PH12408A (en) |
| PL (1) | PL93978B1 (en) |
| RO (1) | RO78426A (en) |
| SU (1) | SU841597A3 (en) |
| YU (1) | YU89973A (en) |
| ZA (1) | ZA732114B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2487386A1 (en) * | 1980-07-23 | 1982-01-29 | Pechiney Aluminium | METHOD AND APPARATUS FOR PRECISELY REGULATING THE INTRODUCTION RATE AND THE ALUMINUM CONTENT OF AN IGNATED ELECTROLYSIS TANK, AND APPLICATION TO THE PRODUCTION OF ALUMINUM |
| US4654130A (en) * | 1986-05-15 | 1987-03-31 | Reynolds Metals Company | Method for improved alumina control in aluminum electrolytic cells employing point feeders |
| WO2008002834A2 (en) * | 2006-06-27 | 2008-01-03 | Alcoa Inc. | Systems and methods useful in controlling operations of metal electrolysis cells |
| US20170370017A1 (en) * | 2016-06-27 | 2017-12-28 | Tel Nexx, Inc. | Wet processing system and method of operating |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR635541A (en) * | 1926-06-07 | 1928-03-17 | Ind De L Aluminium Sa | Process for obtaining, electrolytically, pure aluminum, starting from crude aluminum, alloys, etc. |
| GB687758A (en) * | 1951-02-27 | 1953-02-18 | Ind De L Aluminium Sa | A process for producing molten aluminium by electrolysis of aluminium chloride |
| US2919234A (en) * | 1956-10-03 | 1959-12-29 | Timax Associates | Electrolytic production of aluminum |
| FR1243741A (en) * | 1959-12-29 | 1960-10-14 | Very pure aluminum production process | |
| NL130687C (en) * | 1965-05-28 | |||
| US3573179A (en) * | 1965-12-14 | 1971-03-30 | Ibm | Method and apparatus for the control of electrolytic refining cells |
| US3712857A (en) * | 1968-05-20 | 1973-01-23 | Reynolds Metals Co | Method for controlling a reduction cell |
| US3625842A (en) * | 1968-05-24 | 1971-12-07 | Kaiser Aluminium Chem Corp | Alumina feed control |
-
1972
- 1972-04-06 US US00241607A patent/US3847761A/en not_active Expired - Lifetime
-
1973
- 1973-03-06 CA CA165,341A patent/CA992027A/en not_active Expired
- 1973-03-26 GB GB1449173A patent/GB1386386A/en not_active Expired
- 1973-03-27 ZA ZA732114A patent/ZA732114B/en unknown
- 1973-04-04 FR FR7312116A patent/FR2179099B1/fr not_active Expired
- 1973-04-04 YU YU00899/73A patent/YU89973A/en unknown
- 1973-04-05 DD DD169963A patent/DD103270A5/xx unknown
- 1973-04-05 DE DE2317672A patent/DE2317672C3/en not_active Expired
- 1973-04-05 IT IT49271/73A patent/IT980111B/en active
- 1973-04-05 AT AT298073A patent/AT336907B/en not_active IP Right Cessation
- 1973-04-05 HU HUAU298A patent/HU170661B/hu unknown
- 1973-04-05 SU SU731901968A patent/SU841597A3/en active
- 1973-04-05 CS CS732443A patent/CS203056B2/en unknown
- 1973-04-05 CH CH486373A patent/CH577035A5/xx not_active IP Right Cessation
- 1973-04-06 BR BR732510A patent/BR7302510D0/en unknown
- 1973-04-06 JP JP48038812A patent/JPS5215361B2/ja not_active Expired
- 1973-04-06 PL PL1973161743A patent/PL93978B1/pl unknown
- 1973-04-06 PH PH14494A patent/PH12408A/en unknown
- 1973-04-06 NL NL7304873A patent/NL7304873A/xx unknown
- 1973-04-06 RO RO7374398A patent/RO78426A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT980111B (en) | 1974-09-30 |
| CA992027A (en) | 1976-06-29 |
| BR7302510D0 (en) | 1974-07-18 |
| RO78426A (en) | 1982-12-06 |
| ATA298073A (en) | 1976-09-15 |
| CS203056B2 (en) | 1981-02-27 |
| FR2179099A1 (en) | 1973-11-16 |
| YU89973A (en) | 1982-02-28 |
| JPS499412A (en) | 1974-01-28 |
| DE2317672B2 (en) | 1978-09-07 |
| DE2317672A1 (en) | 1973-10-18 |
| SU841597A3 (en) | 1981-06-23 |
| PH12408A (en) | 1979-02-07 |
| AT336907B (en) | 1977-06-10 |
| NL7304873A (en) | 1973-10-09 |
| ZA732114B (en) | 1974-01-30 |
| DD103270A5 (en) | 1974-01-12 |
| CH577035A5 (en) | 1976-06-30 |
| JPS5215361B2 (en) | 1977-04-28 |
| HU170661B (en) | 1977-08-28 |
| PL93978B1 (en) | 1977-07-30 |
| FR2179099B1 (en) | 1975-04-04 |
| US3847761A (en) | 1974-11-12 |
| DE2317672C3 (en) | 1979-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |