GB1456569A - Tapping aluminium from electrolytic cells - Google Patents
Tapping aluminium from electrolytic cellsInfo
- Publication number
- GB1456569A GB1456569A GB3473474A GB3473474A GB1456569A GB 1456569 A GB1456569 A GB 1456569A GB 3473474 A GB3473474 A GB 3473474A GB 3473474 A GB3473474 A GB 3473474A GB 1456569 A GB1456569 A GB 1456569A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tapping
- cell
- anode
- period
- difference
- 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)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
1456569 Tapping aluminium from electrolytic cells SWISS ALUMINIUM Ltd 7 Aug 1974 [9 Aug 1973] 34734/74 Heading C7B A method of tapping molten Al from a cell in which Al 2 O 3 in a fluoride melt is electrolyzed comprises (a) measuring a succession of instantaneous ohmic resistance values of the cell over a period of time within 30-60 minutes after the first "normal cell service" following the previous tapping, smoothing these values and calculating the difference between the smoothed value at the end of the period and the predetermined base resistance of the cell; (b) adjusting the anode beam height to reduce this difference to below a predetermined limiting value; (c) repeating steps (a) and (b) but with respect to a succession of instantaneous resistance values measured over a period of time within 30-60 mins after the last "normal cell service" before next tapping the cell; and (d) tapping off H mm. of molten Al where H = 1m.t.f. +#B in which 1m is the mean cell D.C. current (kA), t is time in hours (h) between successive tappings, f is a proportionality factor representing the anode burn rate in mm/kAh (usually f = 0À0056-0À0063) and #B is the difference in mm. between the adjusted heights of the anode beam obtained in step (b) and step (c). A "normal cell service" occurs when the cell crust is routinely broken-in and extra Al 2 O 3 is added and excludes servicing necessitated by occurrence of an anode effect. Operations may be controlled throughout by computer, tapping being with a conventional suction pipe. The height H which is tapped may be controlled by maintaining the interpolar distance constant during tapping (controlled by maintaining cell resistance constant) and monitoring the distance moved by the anode beam during this step.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1149873A CH587357A5 (en) | 1973-08-09 | 1973-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1456569A true GB1456569A (en) | 1976-11-24 |
Family
ID=4374067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3473474A Expired GB1456569A (en) | 1973-08-09 | 1974-08-07 | Tapping aluminium from electrolytic cells |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US3899402A (en) |
| JP (1) | JPS5216842B2 (en) |
| AT (1) | AT336908B (en) |
| BE (1) | BE818301A (en) |
| BR (1) | BR7406584D0 (en) |
| CA (1) | CA1072042A (en) |
| CH (1) | CH587357A5 (en) |
| EG (1) | EG11460A (en) |
| FR (1) | FR2240304B1 (en) |
| GB (1) | GB1456569A (en) |
| IE (1) | IE39732B1 (en) |
| IS (1) | IS1028B6 (en) |
| IT (1) | IT1017985B (en) |
| NL (1) | NL7406672A (en) |
| NO (1) | NO138606C (en) |
| PH (1) | PH11055A (en) |
| SE (1) | SE406481B (en) |
| TR (1) | TR17753A (en) |
| ZA (1) | ZA743702B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2614320B1 (en) * | 1987-04-21 | 1989-06-30 | Pechiney Aluminium | METHOD AND DEVICE FOR CONTROLLING THE ADDITIONS OF SOLID ELECTROLYSIS IN ELECTROLYSIS TANKS FOR THE PRODUCTION OF ALUMINUM. |
| US5876585A (en) * | 1996-05-29 | 1999-03-02 | Schenk; Rodney J. | Anode clamp |
| ATE537279T1 (en) | 2006-11-03 | 2011-12-15 | Rio Tinto Alcan Int Ltd | DEVICE AND METHOD FOR PARTING OFF METAL |
| US8199023B2 (en) * | 2008-10-15 | 2012-06-12 | Alcoa Inc. | Systems, methods and apparatus for tapping a metal electrolysis cell |
| CN104911634B (en) * | 2015-05-07 | 2017-07-25 | 北方工业大学 | Method for evaluating current distribution of anode of electrolytic cell according to anode conductivity |
| CN104962951B (en) * | 2015-07-24 | 2017-03-29 | 武汉大学 | It is a kind of to repair the method for inhaling aluminum pipe |
| GB2566674A (en) * | 2017-08-01 | 2019-03-27 | Dubai Aluminium Pjsc | Electrolytic cell for aluminium production, with individual anode drives |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3660256A (en) * | 1967-12-07 | 1972-05-02 | Gen Electric | Method and apparatus for aluminum potline control |
-
1973
- 1973-08-09 CH CH1149873A patent/CH587357A5/xx not_active IP Right Cessation
-
1974
- 1974-01-24 US US436161A patent/US3899402A/en not_active Expired - Lifetime
- 1974-05-17 NL NL7406672A patent/NL7406672A/en not_active Application Discontinuation
- 1974-05-20 SE SE747406685A patent/SE406481B/en unknown
- 1974-05-21 IS IS2212A patent/IS1028B6/en unknown
- 1974-06-11 ZA ZA00743702A patent/ZA743702B/en unknown
- 1974-07-02 TR TR17753A patent/TR17753A/en unknown
- 1974-07-03 JP JP49076239A patent/JPS5216842B2/ja not_active Expired
- 1974-07-31 BE BE147121A patent/BE818301A/en unknown
- 1974-08-05 PH PH16135A patent/PH11055A/en unknown
- 1974-08-07 NO NO742841A patent/NO138606C/en unknown
- 1974-08-07 IE IE1662/74A patent/IE39732B1/en unknown
- 1974-08-07 EG EG321/74A patent/EG11460A/en active
- 1974-08-07 GB GB3473474A patent/GB1456569A/en not_active Expired
- 1974-08-07 CA CA206,432A patent/CA1072042A/en not_active Expired
- 1974-08-07 IT IT26083/74A patent/IT1017985B/en active
- 1974-08-08 FR FR7427614A patent/FR2240304B1/fr not_active Expired
- 1974-08-08 AT AT650874A patent/AT336908B/en not_active IP Right Cessation
- 1974-08-09 BR BR6584/74A patent/BR7406584D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR7406584D0 (en) | 1975-05-27 |
| NL7406672A (en) | 1975-02-11 |
| IT1017985B (en) | 1977-08-10 |
| JPS5216842B2 (en) | 1977-05-12 |
| CH587357A5 (en) | 1977-04-29 |
| JPS5039611A (en) | 1975-04-11 |
| AT336908B (en) | 1977-06-10 |
| ATA650874A (en) | 1976-09-15 |
| IE39732L (en) | 1975-02-09 |
| IS1028B6 (en) | 1980-04-14 |
| DE2438078A1 (en) | 1975-02-20 |
| IE39732B1 (en) | 1978-12-20 |
| ZA743702B (en) | 1975-06-25 |
| NO742841L (en) | 1975-03-10 |
| PH11055A (en) | 1977-10-25 |
| FR2240304A1 (en) | 1975-03-07 |
| US3899402A (en) | 1975-08-12 |
| FR2240304B1 (en) | 1978-01-27 |
| EG11460A (en) | 1977-10-31 |
| BE818301A (en) | 1974-11-18 |
| NO138606B (en) | 1978-06-26 |
| AU7169074A (en) | 1976-01-29 |
| SE7406685L (en) | 1975-02-10 |
| DE2438078B2 (en) | 1976-09-16 |
| CA1072042A (en) | 1980-02-19 |
| TR17753A (en) | 1976-07-01 |
| SE406481B (en) | 1979-02-12 |
| IS2212A7 (en) | 1975-02-10 |
| NO138606C (en) | 1978-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7378009B2 (en) | Method of controlling an aluminum cell with variable alumina dissolution rate | |
| GB1456569A (en) | Tapping aluminium from electrolytic cells | |
| US3712857A (en) | Method for controlling a reduction cell | |
| US4126525A (en) | Method of controlling feed of alumina to an aluminum electrolytic cell | |
| US3812024A (en) | Control of an aluminum reduction cell | |
| GB1242280A (en) | Improvements in method and apparatus for controlling the production of aluminium | |
| ES8603590A1 (en) | Process for winning a metal by electrolysis of molten halogenides whereby a simultaneous and continuous double disposition is taking place, and apparatus therefor. | |
| EP0195142B1 (en) | Controlling alf 3 addition to al reduction cell electrolyte | |
| CN109757003A (en) | Mineral hot furnace autocontrol method | |
| US3900371A (en) | Method of controlling the thickness of the lateral ledges in a cell for the electrolytic recovery of aluminum | |
| GB1243810A (en) | Improvements in or relating to the operation of electrolytic cells for aluminum production | |
| GB1458901A (en) | Method for regulating anode-cathode spacing in an electroly tic cell to prevent current overloads and underloads | |
| NO172192C (en) | PROCEDURE FOR ACCURATE REGULATION OF A LOW ALUMINUM OXIDE CONTENT IN AN ELECTROLYTIC CELL | |
| CA1146904A (en) | Technique for automatic quenching of anode effects in aluminium reduction cells | |
| US3583896A (en) | Detection and control of electrode upsets | |
| GB1413727A (en) | Electrolysis of aluminium | |
| US4752362A (en) | Detecting and estimating shorting phenomena in hall cells and control of cell anodes in response thereto | |
| US3850768A (en) | Method of controlling the supply of al{11 o{11 {0 during the operation of a cell for electrolytic recovery of aluminum | |
| RU2202004C1 (en) | Procedure of control over aluminum electrolyzer | |
| GB1146501A (en) | Method and apparatus for automatic electric corrosion proofing | |
| JPS5810996B2 (en) | Method for controlling alumina supply to an aluminum electrolyzer | |
| SU1320262A1 (en) | Method of stabilizing electrical conditions of aluminium electrolyzer | |
| CA1240950A (en) | Controlling aluminium reduction cell operation | |
| US4437950A (en) | Method of controlling aluminum electrolytic cells | |
| RU2204629C1 (en) | Method for controlling technological process in aluminium cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |