CN108138342A - For determining the device of the current distribution along anode of aluminium cell - Google Patents
For determining the device of the current distribution along anode of aluminium cell Download PDFInfo
- Publication number
- CN108138342A CN108138342A CN201780003564.2A CN201780003564A CN108138342A CN 108138342 A CN108138342 A CN 108138342A CN 201780003564 A CN201780003564 A CN 201780003564A CN 108138342 A CN108138342 A CN 108138342A
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- CN
- China
- Prior art keywords
- anode
- sensor
- current distribution
- aluminium cell
- magnetic field
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- 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.)
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Classifications
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- 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
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- 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
The present invention relates to non-ferrous metallurgy, more particularly to the electrolysis production of aluminium, and during can be used for the automatic monitoring of aluminium production process and in the diagnosis for anode problem.A kind of to be fixed on the anode rod on anode bus for determining the device of the current distribution along anode of aluminium cell wherein the aluminium cell is mounted on, described device includes the one or more magnetic field probes for being connected to computer unit.In order to improve the measurement accuracy of the current distribution along anode of aluminium cell, magnetic field probe is placed in the anode rod body being electrically connected with anode or is directly rigidly fixed on the surface thereof.Sensor is connected to each other by conducting wire, and is connected to computer unit by way of cable and/or by wireless telecommunications, which is located at the safe distance influenced away from high temperature.The application of the device makes it possible to improve the measurement accuracy of the current distribution along anode of aluminium cell.
Description
Technical field
The present invention relates to non-ferrous metallurgies, more particularly to the electrolysis production of aluminium, and can be used in aluminium production process
In diagnosis during automatic monitoring and for anode problem.
Background technology
A kind of working condition of the aluminium cell of known tool backing anode for being used to be fixed on anode bus to having carries out
The method (Russ P 2307881,25 С 3/20 of IPC С are published on October 10th, 2007) of automatic monitoring, packet
It includes and measures the voltage on cell construction component by means of being connected to the voltage sensor of computer unit and determine along anode
Electric current.
The shortcomings that this method for automatic monitoring, is, electricity is measured at several points along anode bus length
The voltage on slot is solved, but calculates the electrical contact connection not included between anode bus and anode rod, in addition, also not including electricity
The correction of the temperature dependency of conductance.All factors above-mentioned can be to the measurement essence of the Current distribution in anode of electrolytic cell
Degree has a negative impact.
Moreover it is known that a kind of aluminium cell of tool backing anode for being fixed on anode bus to having automates
The method of working state monitoring, including measuring cell construction portion by means of being connected to the voltage sensor of computer unit
Voltage on part, and determine the current distribution (25 С 3/20,1988 of United States Patent (USP) US 4786379, IPC С) of anode.It is based on
The voltage value measured on the vertical section of the regular length of anode rod determines the electric current in individual anode.Based on from installation
The measurement result that temperature sensor on anode rod obtains carrys out the temperature dependency of corrected conductivity rate.
It is directly to measure voltage on anode rod according to the major defect of the method for US 4786379.When described in application
Method continuously monitor electrolytic cell along all anodes current distribution when, system must be reconfigured periodically, particularly, each
The measuring unit on anode rod must completely or partially be dismantled when replacing anode.
Immediate with claimed invention is a kind of method for the current distribution for being used to determine anode, including providing
One or more is suitable for measuring sensor (the United States Patent (USP) US 6136177, C25C3/ in the magnetic field near each anode rod
20, С 25 С 1/00 are published on October 24th, 2000).In this approach, it is proposed that use and be suitable for measuring magnetic field (Hall
Effect) current sensor.This method includes the anode being determined as follows in one or more alumina electrolysis baths
Along current distribution：I) one or more sensors are provided, the sensor is suitable for each of the one or more conductors of measurement
Near magnetic field, the conductor to electrolytic cell transmit electric power or from electrolytic cell transmit electric power and generate it is proportional to the magnetic field
One or more signals；Ii it) is communicated with the signal with remote control；Iii) before or after the communication steps
The signal pin compensates environment magnetic effect and temperature；And iv) controlled based on the signal to electrolytic cell generation
Signal.
The major defect of the prototype method is, must be complete by the measuring unit on anode rod when replacing anode every time
Fully or partially dismantle.Therefore, it is inevitably related to frame offset and rotation relative to previous installation site, so as to lead
Cause further measurement error.In addition, in some cases, sensor can be subjected to high temperature, and (open flap, adjacent anode are more
Change, working process etc.), lead to sensor degradation.
Invention content
It is an object of the invention to improve the measurement accuracy along current distribution of aluminium cell anode.Skill provided by the invention
Art effect allows to make technological parameter and electrolytic cell operation mode stable, so as to improve the technology of aluminium cell and economic performance.
The process monitoring of aluminium cell is based on the continuous sensing to potline current and bath voltage and wink
When electrolytic cell resistance calculating.In order to continuously monitor all processes in electrolytic cell, the voltage value measured on electrolytic cell is just known that
It is inadequate.In order to make the diagnosis to active procedure more accurate and respond these processes in time, need from the attached of electrolytic cell
Plus signal.The current loading of each anode obtained by the electric current for measuring the anode rod for connecting or being electrically connected with positive pole machinery
Value can be used as additional signal.Under such measurement, since anode and anode rod are connected, so the electric current for passing through anode rod
Equal to anode current.Information about the current distribution (in aluminum i ndustry referred to as " current distribution ") along parallel anode in electrolytic cell
Make it possible to make the decision about leveling along anode current rapidly, to obtain the maximum performance in the scheduled current of electrolytic cell.
The technique effect of the measurement accuracy of the current distribution along anode including improving aluminium cell is true by being used for
Surely the device of the current distribution along anode for the aluminium cell being fixed on anode bus realizes that the anode bus is each
Comprising one or more magnetic field probes on the internal or surface of anode rod, wherein, if more than one sensor,
Sensor by conducting wire interconnect and by means of cable and/or by wireless connection and be connected to be located at away from high temperature source safety away from
From computer unit.
The present invention is completed using the special characteristic for helping to realize the technique effect.
Before sensor is mounted in anode rod, the sensor insulating materials can be wrapped to prevent electricity
It is in electrical contact between flow measurement sensor and anode rod.In addition, in order to protect the sensor against mechanical failure and reduce temperature shadow
It rings, sensor surface can be covered, and the conducting wire for connecting sensor can be pacified with the metal cap being fixed on anode rod
It puts in the pipeline in anode rod body.The cable of connection sensor and computer unit, which can be placed in, is fixed on the anode mother
In the cable channel of line, and computer unit can be placed on anode bus.
The not exhaustive property of specific embodiment of invention as described above.This hair limited in the independent claim
There are different modification and improvement modes in bright range.
By installing magnetic field probe in anode rod body and due to the sensor in the case where replacing anode
Position it is constant, the error of current metering sensor significantly reduces, cause it is ongoing during electrolytic cell monitoring and examine
It is disconnected correctly to be parsed.Since sensor is mounted in anode rod body, open flap, phase can be protected them from
The influence of high temperature that adjacent anode change, working process etc. is brought.In addition, since sensor is installed in the fabrication stage and in sun
Pole remains fixed, therefore the anode position in anode rod body can be to avoid in anode change and fortune during replacing relative to guide rod
Defeated period is damaged, measuring system failure.
Description of the drawings
The essence of the present invention may be better understood after research drawings below：
Fig. 1 shows the overview of device.
Fig. 2 shows the installation diagram of the magnetic field probe on anode rod.
Fig. 3 shows the figure for preparing the anode rod for magnetic field probe mounted thereto.
Fig. 4 shows the installation diagram of the magnetic field probe on anode rod surface.
Specific embodiment
For determining that the device along current distribution of aluminium cell anode includes being connected to through anode rod 2 by clamp 4
The anode 1 of anode bus 3.Anode rod 2 includes the Hall sensor 5 (hereinafter sensor 5) for magnetic-field measurement.It can be with
It is one or more sensors 5.If the quantity of sensor is more than one, they are mounted on perpendicular to the one of anode rod axis
It is connected with each other in a plane and with electric wire.The conducting wire of sensor 5 is connected via being laid on cable channel 8 by electric connector 6
Interior cable 7 is connected to computer unit 9.In order to avoid the electrical contact between current metering sensor and anode rod, sensing
Device 5 can be wrapped by insulating materials 10.It is preferred that the electric wire for connecting sensor 5 is layed in the manufactured pipeline in anode rod section
In 11.
It can be measured with sensor 5 and flow through the magnetic field that the electric current of anode rod generates.Sensor 5 is with conductor (that is, anode is led
Bar 2) it integrates.Signal from sensor 5 is transmitted to computer unit via the cable 7 being laid in cable channel 8
9, it collected in computer unit 9, handle these signals, then transmit these processed signals (along the current value of anode)
To switch board (not shown).
Sensor 5 is installed as follows：(milling out) groove 2a is formed in anode rod 2 with receiving sensor 5, sensing
Device 5 is wrapped if necessary by insulating materials 10 (for example, coating of glass dry goods pressing plate), and sensor 5 is fixed in groove 2a
And the electric wire for the electric connector 6 being connect with leading to cable 7 is connected with each other.Electric wire can be laid on the sun in cable channel 11
In the guide rod body of pole.Groove 2a with the sensor 5 wrapped by insulating materials 10 can be fixed in the metallic plate of anode rod 2
12 are covered, and exempt to be subject to any damage with protection tool (sensor 5).
During 1 replacement process of anode, cable 7 is extracted from electric connector 6.Using crane, clamp with use
The anode rod 2 for the anode 1 crossed unclamps clamp 4 and takes out anode 1 from electrolytic cell.Then, new anode 1 is fixed on
Anode rod 2, wherein sensor 5 are mounted in anode rod 2 and are connected with each other by electric wire, clamp clamp 4 and come from
The cable 7 of electric connector 6 is connected with the cable that sensor 5 links together.
The application of device claimed makes it possible to improve the measurement essence of the current distribution along anode of aluminium cell
Degree.
Embodiment with the sensor 5 on conductor (anode rod 2) surface is also possible.
In this case, sensor 5 is installed as follows：Anode rod 2 is furnished with to be wrapped in advance by insulating materials 10
Sensor 5, be screwed into screw and fixed in 2 body of anode rod.By being fixed on the anode rod 2 at the top of sensor 5
Metallic plate 12 protects sensor 5 from mechanical failure.
The operation that device with this sensor construction operates the sensor with being placed in anode rod body is identical.
Claims (6)
1. it is a kind of for determining the device of the current distribution along anode of aluminium cell, it is fixed wherein the aluminium cell is mounted on
In on the anode rod on anode bus, described device includes the one or more magnetic-field measurements sensing for being connected to computer unit
Device, which is characterized in that one or more of magnetic field probes are positioned in anode rod body or directly rigidly fix
On the surface thereof, and if the quantity of sensor is two or more, they are interconnected by conducting wire and are connected to meter
Calculation machine unit.
2. device as described in claim 1, which is characterized in that the magnetic field probe is wrapped by insulating materials.
3. device as described in claim 1, which is characterized in that the surface of the magnetic field probe is with being fixed on the sun
The metal skirt covering of pole guide rod.
4. device as described in claim 1, which is characterized in that connect conducting wire from the sensor and computer unit
Cable is laid in the cable channel for being fixed on the anode bus.
5. device as described in claim 1, which is characterized in that the conducting wire of the sensor interconnection is made to be laid on the anode
In pipeline in guide rod body.
6. device as described in claim 1, which is characterized in that the computer unit is installed on the anode bus.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2016125969 | 2016-06-28 | ||
| RU2016125969A RU2634817C1 (en) | 2016-06-28 | 2016-06-28 | Device for determining current distribution over anodes of aluminium electrolyser |
| PCT/RU2017/000321 WO2018004382A1 (en) | 2016-06-28 | 2017-05-18 | Device for determining current distribution across the anodes of an aluminum electrolyser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108138342A true CN108138342A (en) | 2018-06-08 |
Family
ID=60263725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780003564.2A Pending CN108138342A (en) | 2016-06-28 | 2017-05-18 | For determining the device of the current distribution along anode of aluminium cell |
Country Status (6)
| Country | Link |
|---|---|
| CN (1) | CN108138342A (en) |
| AU (1) | AU2017287821A1 (en) |
| BR (1) | BR112018006565A2 (en) |
| CA (1) | CA2997990A1 (en) |
| RU (1) | RU2634817C1 (en) |
| WO (1) | WO2018004382A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518231A (en) * | 2018-12-25 | 2019-03-26 | 云南铝业股份有限公司 | A kind of electrode of aluminum electrolysis cell current distributions measuring device and its measurement method |
| CN110923753A (en) * | 2019-10-30 | 2020-03-27 | 白银有色集团股份有限公司 | Conductive bar base for measuring electrode current of aqueous solution electrolytic cell |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2686570C1 (en) * | 2018-05-21 | 2019-04-29 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Method for non-destructive defectoscopy of aluminum electrolyser anode |
| RU2700904C1 (en) * | 2018-07-12 | 2019-09-23 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Laboratory apparatus for analysing anode processes of an aluminum electrolysis cell |
| CN109876752B (en) * | 2019-03-22 | 2021-01-29 | 中南大学 | Controllable industrial aluminum electrolysis electrochemical process research method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4786379A (en) * | 1988-02-22 | 1988-11-22 | Reynolds Metal Company | Measuring current distribution in an alumina reduction cell |
| US6136177A (en) * | 1999-02-23 | 2000-10-24 | Universal Dynamics Technologies | Anode and cathode current monitoring |
| RU2307881C1 (en) * | 2005-12-22 | 2007-10-10 | Общество с ограниченной ответственностью "Русская инжиниринговая компания" | Aluminum cell technical state automatic control method |
| US8125214B1 (en) * | 2008-02-12 | 2012-02-28 | Daniel Artemus Steingart | Determining electrical current using at least two sensors at a known distance from each other |
-
2016
- 2016-06-28 RU RU2016125969A patent/RU2634817C1/en active
-
2017
- 2017-05-18 BR BR112018006565A patent/BR112018006565A2/en not_active Application Discontinuation
- 2017-05-18 WO PCT/RU2017/000321 patent/WO2018004382A1/en active Application Filing
- 2017-05-18 CA CA2997990A patent/CA2997990A1/en not_active Abandoned
- 2017-05-18 AU AU2017287821A patent/AU2017287821A1/en not_active Abandoned
- 2017-05-18 CN CN201780003564.2A patent/CN108138342A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518231A (en) * | 2018-12-25 | 2019-03-26 | 云南铝业股份有限公司 | A kind of electrode of aluminum electrolysis cell current distributions measuring device and its measurement method |
| CN110923753A (en) * | 2019-10-30 | 2020-03-27 | 白银有色集团股份有限公司 | Conductive bar base for measuring electrode current of aqueous solution electrolytic cell |
| CN110923753B (en) * | 2019-10-30 | 2021-08-27 | 白银有色集团股份有限公司 | Conductive bar base for measuring electrode current of aqueous solution electrolytic cell |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2634817C1 (en) | 2017-11-03 |
| BR112018006565A2 (en) | 2019-05-14 |
| CA2997990A1 (en) | 2018-01-04 |
| AU2017287821A1 (en) | 2018-04-05 |
| WO2018004382A1 (en) | 2018-01-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180608 |
|
| WD01 | Invention patent application deemed withdrawn after publication |