GB1260162A - Improvements in or relating to alumina reduction cell operation - Google Patents
Improvements in or relating to alumina reduction cell operationInfo
- Publication number
- GB1260162A GB1260162A GB7437/69A GB743769A GB1260162A GB 1260162 A GB1260162 A GB 1260162A GB 7437/69 A GB7437/69 A GB 7437/69A GB 743769 A GB743769 A GB 743769A GB 1260162 A GB1260162 A GB 1260162A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- cell
- concentration
- controller
- 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
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)
Abstract
1,260,162. Automatic concentration control. KAISER ALUMINUM & CHEMICAL CORP. Feb. 11, 1969 [Feb.23, 1968], No. 7437/69. Heading G3R. [Also in Division C7] A measurement of alumina concentration in an alumina reduction cell is derived for control purposes from two different sets of corresponding values of cell current and voltage. In Fig. 3, a steel sheel 1, having an insulating layer 12 e.g. of alumina, bauxite, clay, aluminium silicate or brick and a lining 14 e. g. of carbon, alumina, silicon carbide or silicon nitrate, contains a pool of molten aluminium 16 and a body of molten electrolyte 18. Carbon anodes 20 dipping into the electrolyte are adjustable vertically by a pneumatic actuator 36 and cathodes 30 are inserted in lining 14. Several cells are supplied in series through a variable controller 32 which may be a rheostat, tapped transformer or saturable reactor. Under the control of a digital computer 40, controller 32 is periodically varied and values of cell resistance and back e. m. f. computed from sets of measured values of cell current and voltage. When the computed quantity indicates that the concentration is below a predetermined value means are operated to break the top crust 22 and a quantity of alumina is added by operation of a valve 24. Instead of controller 32 the current may be periodically varied by the effect of another intermittent load, e. g. a rolling mill, supplied from the same source or by allowing the concentration of each cell in turn to get very low.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70774768A | 1968-02-23 | 1968-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1260162A true GB1260162A (en) | 1972-01-12 |
Family
ID=24843006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7437/69A Expired GB1260162A (en) | 1968-02-23 | 1969-02-11 | Improvements in or relating to alumina reduction cell operation |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3629079A (en) |
| DE (1) | DE1909033A1 (en) |
| FR (1) | FR2002506A1 (en) |
| GB (1) | GB1260162A (en) |
| NL (1) | NL6902867A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3878070A (en) * | 1972-10-18 | 1975-04-15 | Southwire Co | Apparatus for and method of producing metal |
| US4045308A (en) * | 1976-11-04 | 1977-08-30 | Aluminum Company Of America | Bath level set point control in an electrolytic cell and method of operating same |
| JPS548109A (en) * | 1977-06-22 | 1979-01-22 | Mitsubishi Keikinzoku Kogyo | Controlling method of feeding alumina into aluminum electrolytic bath |
| CA1219636A (en) * | 1984-01-18 | 1987-03-24 | Andrew E. Deczky | Data acquisition system for the computer control of aluminum smelters |
| FR2581660B1 (en) * | 1985-05-07 | 1987-06-05 | Pechiney Aluminium | PROCESS FOR THE PRECISION OF A LOW ALUMINUM CONTENT IN AN IGNATED ELECTROLYSIS TANK FOR 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 |
| FR2727985B1 (en) * | 1994-12-09 | 1997-01-24 | Pechiney Aluminium | METHOD AND DEVICE FOR MEASURING THE TEMPERATURE AND LEVEL OF THE MELT ELECTROLYSIS BATH IN ALUMINUM PRODUCTION TANKS |
| RU2303658C1 (en) * | 2005-11-02 | 2007-07-27 | Общество с ограниченной ответственностью "Русская инжиниринговая компания" | Method for controlling technological process in aluminum cell with roasted anodes |
| CN101275249B (en) * | 2007-12-20 | 2010-06-02 | 中国铝业股份有限公司 | Method for real-time detection of concentration of aluminum oxide in aluminum cell |
| CN103103570B (en) * | 2013-01-30 | 2015-10-28 | 重庆科技学院 | Based on the aluminium cell condition diagnostic method of pivot similarity measure |
| CN105463513B (en) * | 2015-05-28 | 2018-04-27 | 贵阳铝镁设计研究院有限公司 | Aluminum electrolysis alumina concentration on-line monitoring method and its monitoring device |
| CN108588762B (en) * | 2018-07-02 | 2023-11-21 | 聊城信源集团有限公司 | Electrolytic aluminum crust breaking and blanking system |
| CN112267130A (en) * | 2020-10-10 | 2021-01-26 | 贵阳铝镁设计研究院有限公司 | Method and device for monitoring and adjusting cathode current distribution of aluminum electrolytic cell |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU121938A1 (en) * | 1958-09-11 | 1958-11-30 | М.М. Агабабян | The system of automatic control of the process of obtaining aluminum in the electrolysis bath |
| CH417125A (en) * | 1963-08-30 | 1966-07-15 | Alusuisse | Process for the automatic regulation of the terminal voltage in a system for the electrolytic production of aluminum in the fluoride melt flow and a system provided with the corresponding regulating device |
| FR1397946A (en) * | 1964-01-14 | 1965-05-07 | Pechiney | Process for the prediction of burns, the systematic feeding and automatic regulation of the anode system of the tanks for the igneous electrolysis of alumina |
| US3380897A (en) * | 1964-11-16 | 1968-04-30 | Reynolds Metals Co | Method of determining ore concentration |
| US3471390A (en) * | 1965-03-24 | 1969-10-07 | Reynolds Metals Co | Alumina concentration meter |
| NL130687C (en) * | 1965-05-28 |
-
1968
- 1968-02-23 US US707747A patent/US3629079A/en not_active Expired - Lifetime
-
1969
- 1969-02-11 GB GB7437/69A patent/GB1260162A/en not_active Expired
- 1969-02-21 FR FR6904507A patent/FR2002506A1/fr not_active Withdrawn
- 1969-02-22 DE DE19691909033 patent/DE1909033A1/en active Pending
- 1969-02-24 NL NL6902867A patent/NL6902867A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6902867A (en) | 1969-08-26 |
| DE1909033A1 (en) | 1969-09-04 |
| FR2002506A1 (en) | 1969-10-17 |
| US3629079A (en) | 1971-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |