CN101638797B - Method for electrically reforming cathode bath circumference bus of aluminum electrolytic bath - Google Patents
Method for electrically reforming cathode bath circumference bus of aluminum electrolytic bath Download PDFInfo
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- CN101638797B CN101638797B CN2009103061909A CN200910306190A CN101638797B CN 101638797 B CN101638797 B CN 101638797B CN 2009103061909 A CN2009103061909 A CN 2009103061909A CN 200910306190 A CN200910306190 A CN 200910306190A CN 101638797 B CN101638797 B CN 101638797B
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Abstract
The invention discloses a method for electrically reforming a cathode bath circumference bus of an aluminum electrolytic bath, which has less influence on production and is safe. The method sequentially comprises the following steps: confirming that one of predetermined cathode bath circumference buses of the aluminum electrolytic bath is reformed; setting at least one shunting device, wherein the shunting devices are electric conductors, one end of each electric conductor is connected to a charging side circuit in the front of an anode of the aluminum electrolytic bath, and the other end of each electric conductor is connected to a circuit behind the cathode bath circumference bus of the aluminum electrolytic bath; switching off the predetermined cathode bath circumference bus; reforming the predetermined cathode bath circumference bus in a power-off state; recovering the predetermined cathode bath circumference bus to an electric state; and then disassembling all the shunting devices. The invention lightens the burden of other cathode bath circumference buses when part of cathode bath circumference buses are in a short circuit and has high safety and less influence on the running of the aluminum electrolytic bath; and the reformation of the cathode bath circumference bus can be carried out at any time and is free from the influence of an overhaul interval period.
Description
Technical field
The present invention relates to a kind of method that the supply line of aluminium cell is transformed, especially a kind of method of charged reforming cathode bath circumference bus of aluminum electrolytic bath.
Background technology
The current trend of series aluminum electrolyzer is such: electric current is by the output of power supply workshop, enter one group of riser bus bar through the current enter bus corresponding to first aluminium cell, this group riser bus bar is positioned at electricity input side, be generally a plurality of, this group riser bus bar is connected with the anode horizontal bus of first aluminium cell through soft band bus, each is organized anode and all is connected with the anode horizontal bus, under the working order electric current by anode be transmitted to corresponding be provided with respectively organize negative electrode, be flowed to groove each cathode bath circumference bus on every side by negative electrode by the soft band bus of negative electrode again, the corresponding connection of each cathode bath circumference bus one end organized negative electrodes more, the other end is connected on the corresponding riser bus bar of next aluminium cell, this group riser bus bar promptly is the riser bus bar of next aluminium cell electricity input side, it sends into electric current by soft band bus the anode horizontal bus of next aluminium cell again, by that analogy, the cathode bath circumference bus of last aluminium cell is flowed to the current output terminal bus of serial electrolyzer, returns power supply workshop rectifier unit.Therefore, the series aluminum electrolyzer is when the energising operation, and its cathode bath circumference bus all is charged.
At present, domestic part cathode bath circumference bus of aluminum electrolytic bath design is reasonable inadequately, for obtaining better technico-economical comparison, reaches the purpose of further energy-saving and emission-reduction, and needs are optimized the cathode bath circumference bus configuration of aluminium cell again.Want the cathode bath circumference bus of certain aluminium cell is reconfigured optimization, just will be referred to the dismounting of existing bus with to the welding of new bus, under the situation of aluminium cell normal power-up operation, there is stronger magnetic field around the aluminium cell, welding job can't be carried out.Because the cathode bath circumference bus contact that needs to transform generally has several points, each point is transformed the needed time generally at ten hours, if adopt separate unit aluminium cell outage reforming mode, then this aluminium cell can only stop groove because power off time is long, and manufacturing enterprise will suffer enormous economic loss.
But, because the electric current by aluminium cell is very big, when the anticathode bath circumference bus is transformed in the prior art, still have to adopt the method that outage is then transformed to the separate unit aluminium cell, this method otherwise can only utilize a certain aluminium cell overhaul during its cathode bath circumference bus is transformed, be very restricted on time, or just must bring the tremendous economic loss.
Summary of the invention
For the method that overcomes existing reforming cathode bath circumference bus of aluminum electrolytic bath to producing far-reaching deficiency, technical problem to be solved by this invention provides a kind of to producing the method for the less and safe charged reforming cathode bath circumference bus of aluminum electrolytic bath of influence.
The technical solution adopted for the present invention to solve the technical problems is: the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath, the working current of aluminium cell is flowed into the anode horizontal bus of this aluminium cell by a plurality of riser bus bars that are positioned at electricity input side, many group anodes of flowing through enter electrolyzer, behind the soft band bus of negative electrode, negative electrode that correspondence is provided with, flow out by many cathode bath circumference bus, this method may further comprise the steps successively:
I, determine wherein predetermined cathode bath circumference bus of this aluminium cell is transformed;
II, at least one part flow arrangement is set, described part flow arrangement is an electrical conductor, and the one end is connected to the electricity input side circuit before this aluminium cell anode, and the other end is connected to the circuit behind the cathode bath circumference bus of this aluminium cell;
III, to this predetermined cathode bath circumference bus outage;
IV, the predetermined cathode bath circumference bus under the off-position is transformed;
V, the predetermined cathode bath circumference bus of recovery are removed all part flow arrangements then to electriferous state.
The invention has the beneficial effects as follows: the electric current of aluminium cell needs earlier through just entering in the aluminium cell behind the anode horizontal bus, and behind cathode bath circumference bus, flow out, thereby, the part flow arrangement that can connect conduction before the anode horizontal bus and between the circuit after the phase cathode bath circumference bus, in other circuit part electric current had just directly entered next aluminium cell or has been connected in cathode bath circumference bus before entering this aluminium cell after, that is to say, the electric current that is passed into this aluminium cell will reduce, the burden of all the other cathode bath circumference bus when this has just alleviated the short circuit of part cathode bath circumference bus, security is good, influence to aluminium cell operation is less, and the transformation of cathode bath circumference bus can be carried out at any time and not be subjected to influence during the time between overhaul.
Description of drawings
Fig. 1 is the synoptic diagram of the inventive method.
Fig. 2 is the synoptic diagram of part flow arrangement of the present invention.
Be labeled as 1-riser bus bar, the soft band bus of 2-among the figure, 3-anode horizontal bus, 4-anode, 5-negative electrode, the soft band bus of 6-negative electrode, 7-cathode bath circumference bus, 7 '-predetermined cathode bath circumference bus, the 9-part flow arrangement, 10-aluminium cell, next aluminium cell of 11-, the crimping piece that 91-is connected with riser bus bar, the 92-lead, the crimping piece that 93-is connected with the anode horizontal bus, the grouping of 1#～n#-aluminium electrolytic cell cathode.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As depicted in figs. 1 and 2, the method of charged reforming cathode bath circumference bus of aluminum electrolytic bath of the present invention, the method of charged reforming cathode bath circumference bus of aluminum electrolytic bath, the working current of aluminium cell 10 is flowed into the anode horizontal bus 3 of this aluminium cell 10 by a plurality of riser bus bars 1 that are positioned at electricity input side, many group anodes 4 of flowing through enter electrolyzer, behind the soft band bus of negative electrode 5, negative electrode that correspondence is provided with, flow out by many cathode bath circumference bus 7, this method may further comprise the steps successively:
I, determine wherein predetermined cathode bath circumference bus 7 ' of this aluminium cell 10 is transformed;
II, at least one part flow arrangement 9 is set, described part flow arrangement 9 is an electrical conductor, and the one end is connected to the electricity input side circuit before these aluminium cell 10 anodes 4, and the other end is connected to the circuit behind the cathode bath circumference bus 7 of this aluminium cell 10;
III, to this predetermined cathode bath circumference bus 7 ' outage;
IV, the predetermined cathode bath circumference bus 7 ' under the off-position is transformed;
V, the predetermined cathode bath circumference bus 7 ' of recovery are removed all part flow arrangements 9 then to electriferous state.
The part flow arrangement 9 main conduction shunting actions that rise, in the series aluminum electrolyzer, the electric current of aluminium cell needs earlier through just entering in the groove behind the anode horizontal bus 3, between the circuit behind the cathode bath circumference bus 7 of the electricity input side circuit before these aluminium cell 10 anodes 4 of part flow arrangement 9 connections and this aluminium cell 10, the part electric current had just directly entered next aluminium cell 11 before entering this aluminium cell 10 so, if this aluminium cell 10 then enters other subsequent conditioning circuit for last platform trough.
When using method of the present invention, the electric current that is passed into this aluminium cell 10 will reduce, but the working current that enters next aluminium cell 11 in the series aluminum electrolyzer is constant, promptly, be divided to the also not normal operation of next aluminium cell 11 of entail dangers to of electric current of next aluminium cell 11, can not influence the production of follow-up aluminium cell, but can alleviate because part cathode bath circumference bus 7 ' open circuit after the burden of all the other cathode bath circumference bus 7 of this aluminium cell 10, increased the security of aluminium cell operation greatly.Under local off-position, the transformations such as welding of predetermined cathode bath circumference bus 7 ' operation also can be carried out smoothly.Therefore, method of the present invention anticathode bath circumference bus 7 is at any time transformed, and is less to the influence of aluminium cell operation, guaranteed the safe operation of series aluminum electrolyzer, and can avoid the great number financial loss that causes because of breaks in production.
Generally speaking, on the riser bus bar 1 of next aluminium cell 11 of predetermined cathode bath circumference bus 7 ' the corresponding connection of transforming with needs part flow arrangement 9 is not installed preferably, in order to avoid part flow arrangement 9 is installed is hindered rebuilding constructions transforming the position.
In the actually operating, the working current the when magnitude of current size of being shunted in the Step II should be moved according to the aluminium cell normal power-up, the particular cases such as conductive capability of cathode bath circumference bus are determined, can guarantee that circuit safety and the safe operation of keeping aluminium cell get final product.
For capacity more than 160KA large-scale aluminum electrolytic cell, in the described Step II, be preferably 5%～30% of potline current under the running status of switching on via each part flow arrangement 9 by the electric current shunt away, just can guarantee the circuit safety in the transformation process and the ordinary production of aluminium cell.
Among the described Step II I, suggestion adopt to disconnect all with the soft band bus 6 of negative electrode that should predetermined cathode bath circumference bus 7 ' be connected and respective cathode 5 between ways of connecting make this predetermined cathode bath circumference bus 7 ' be in off-position, this kind mode is convenient to power operation and is scheduled to cathode bath circumference bus 7 ' and returns to electriferous state with making.
For the electrolyzer that uses the crimping mode to connect between soft band bus 6 of negative electrode and the negative electrode 5, all crimping faces that correspondence are connected in predetermined cathode bath circumference bus 7 ' all disconnect, and can make predetermined cathode bath circumference bus 7 ' cut off the power supply; For the electrolyzer that uses welding process to connect between soft band bus 6 of negative electrode and the negative electrode 5, all welds that correspondence are connected in predetermined cathode bath circumference bus 7 ' cut out the slit one, can make predetermined cathode bath circumference bus 7 ' cut off the power supply.
1., on the current enter bus if described aluminium cell 10 is first aluminium cell in the series aluminum electrolyzer, an end of the part flow arrangement 9 in the described Step II can select to be connected to down column position:; 2., on the riser bus bar 1 of this aluminium cell 10; 3., on the anode horizontal bus 3 of this aluminium cell 10, and the other end of part flow arrangement 9 can be selected to be connected on the riser bus bar 8 or anode horizontal bus 3 of next aluminium cell 11 that is adjacent, why selection is that the riser bus bar 8 or the anode horizontal bus 3 of next aluminium cell 11 of being adjacent connects, also shunted for fear of the working current of next aluminium cell 11, thereby the normal operation to next aluminium cell 11 impacts, connection line is shorter simultaneously, the convenient connection.
1., on the riser bus bar 1 of this aluminium cell 10 in like manner, if described aluminium cell 10 is the aluminium cells that are positioned at the mid-way in the series aluminum electrolyzer, an end of the part flow arrangement 9 in the described Step II can select to be connected to down column position:; 2., on the anode horizontal bus 3 of this aluminium cell 10, and the other end of part flow arrangement 9 can be selected to be connected on the riser bus bar 8 or anode horizontal bus 3 of next aluminium cell 11 that is adjacent, and connects with convenient.
1., on the riser bus bar 1 of this aluminium cell 10 if last platform trough that described aluminium cell 10 is series aluminum electrolyzers, an end of the part flow arrangement 9 in the described Step II can select to be connected to down column position:; 2., on the anode horizontal bus 3 of this aluminium cell 10, the other end of part flow arrangement 9 then is connected on the current output terminal bus.
1., on the current enter bus if described aluminium cell 10 only has one, an end of the part flow arrangement 9 in the then described Step II can select to be connected to down column position:; 2., on the riser bus bar 1 of this aluminium cell 10; 3., on the anode horizontal bus 3 of this aluminium cell 10, the other end of part flow arrangement 9 then is connected on the current output terminal bus.
Embodiment:
As shown in Figure 1, a side is the electricity input side of aluminium cell 10, and opposite side is the electricity output side of aluminium cell 10, and this side also is the electricity input side of next aluminium cell 11 simultaneously.Electric current is entered by one group five riser bus bar 1, is flowed to the riser bus bar 1 of next aluminium cell 11 behind soft band bus 2, anode horizontal bus 3, anode 4, negative electrode 5, the soft band bus 6 of negative electrode, cathode bath circumference bus 7 respectively.
The position of a certain transformation point when being optimized for the configuration of anticathode bath circumference bus shown in Fig. 1, what need rebuilding construction is predetermined cathode bath circumference bus 7 ', the riser bus bar of its corresponding next platform trough that connects is predetermined riser bus bar 1 ', earlier this aluminium cell 10 is implemented shunting, working current with three part flow arrangements, 9 shunting aluminium cells 10 arrives next aluminium cell 11, one of all the other riser bus bars except that riser bus bar 1 ' of part flow arrangement 9 and next aluminium cell 11 conduction is connected, one part flow arrangement, the 9 corresponding riser bus bars 1 that connect, as shown in Figure 2, part flow arrangement 9 can adopt three crimping pieces that coupled together by lead 92, wherein crimping piece 91 is connected with riser bus bar 1, crimping piece 93 is connected with anode horizontal bus 3, after part flow arrangement 9 connected one by one, be connected disconnection between predetermined cathode bath circumference bus 7 ' pairing all negative electrodes 5 that will transform and the soft band bus 6 of its negative electrode, so just do not have electric current again by this predetermined cathode bath circumference bus 7 ', welding job will be easy to finish.
The bus welding job of other each transformation point is carried out according to this.
Claims (9)
1. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath, the working current of aluminium cell (10) is flowed into the anode horizontal bus (3) of this aluminium cell (10) by a plurality of riser bus bars (1) that are positioned at electricity input side, the many group anodes (4) of flowing through enter electrolyzer, behind the soft band bus of negative electrode (5), negative electrode that correspondence is provided with, flow out by many cathode bath circumference bus (7), this method may further comprise the steps successively:
I, determine a wherein predetermined cathode bath circumference bus (7 ') of this aluminium cell (10) is transformed;
II, at least one part flow arrangement (9) is set, described part flow arrangement (9) is an electrical conductor, and the one end is connected to the preceding electricity input side circuit of this aluminium cell (10) anode (4), and the other end is connected to the circuit behind the cathode bath circumference bus (7) of this aluminium cell (10);
III, to the outage of this predetermined cathode bath circumference bus (7 ');
IV, the predetermined cathode bath circumference bus (7 ') under the off-position is transformed;
V, the predetermined cathode bath circumference bus (7 ') of recovery are removed all part flow arrangements (9) then to electriferous state.
2. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath as claimed in claim 1, it is characterized in that: described aluminium cell (10) is working current 〉=160KA usually, in the described Step II, the electric current that flows through all part flow arrangements (9) is 5%～30% of the common working current of aluminium cell (10).
3. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath as claimed in claim 1 or 2, it is characterized in that: among the described Step II I, ways of connecting makes this predetermined cathode bath circumference bus (7 ') be in off-position between all soft band buses of negative electrode (6) that are connected with this predetermined cathode bath circumference bus (7 ') of employing disconnection and the respective cathode (5).
4. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath as claimed in claim 1 or 2, it is characterized in that: described aluminium cell (10) is first aluminium cell in the series aluminum electrolyzer, one end of the part flow arrangement in the described Step II (9) is connected on current enter bus or its riser bus bar (1) or its anode horizontal bus (3), and the other end of part flow arrangement (9) is connected on the riser bus bar (8) or anode horizontal bus (3) of next aluminium cell (11) that is adjacent.
5. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath as claimed in claim 1 or 2, it is characterized in that: described aluminium cell (10) is the aluminium cell that is positioned at the mid-way in the series aluminum electrolyzer, one end of the part flow arrangement in the described Step II (9) is connected on its riser bus bar (1) or its anode horizontal bus (3), and the other end of part flow arrangement (9) is connected on the riser bus bar (1) or anode horizontal bus (3) of next aluminium cell (11) that is adjacent.
6. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath as claimed in claim 1 or 2, it is characterized in that: described aluminium cell (10) is last platform trough of series aluminum electrolyzer, one end of the part flow arrangement in the described Step II (9) is connected on its riser bus bar (1) or its anode horizontal bus (3), and the other end of part flow arrangement (9) is connected on the current output terminal bus.
7. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath as claimed in claim 3, it is characterized in that: described aluminium cell (10) is first aluminium cell in the series aluminum electrolyzer, one end of the part flow arrangement in the described Step II (9) is connected on current enter bus or its riser bus bar (1) or its anode horizontal bus (3), and the other end of part flow arrangement (9) is connected on the riser bus bar (8) or anode horizontal bus (3) of next aluminium cell (11) that is adjacent.
8. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath as claimed in claim 3, it is characterized in that: described aluminium cell (10) is the aluminium cell that is positioned at the mid-way in the series aluminum electrolyzer, one end of the part flow arrangement in the described Step II (9) is connected on its riser bus bar (1) or its anode horizontal bus (3), and the other end of part flow arrangement (9) is connected on the riser bus bar (1) or anode horizontal bus (3) of next aluminium cell (11) that is adjacent.
9. the method for charged reforming cathode bath circumference bus of aluminum electrolytic bath as claimed in claim 3, it is characterized in that: described aluminium cell (10) is last platform trough of series aluminum electrolyzer, one end of the part flow arrangement in the described Step II (9) is connected on its riser bus bar (1) or its anode horizontal bus (3), and the other end of part flow arrangement (9) is connected on the current output terminal bus.
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| CN2009103061909A CN101638797B (en) | 2009-08-27 | 2009-08-27 | Method for electrically reforming cathode bath circumference bus of aluminum electrolytic bath |
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| CN2009103061909A CN101638797B (en) | 2009-08-27 | 2009-08-27 | Method for electrically reforming cathode bath circumference bus of aluminum electrolytic bath |
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| CN101638797A CN101638797A (en) | 2010-02-03 |
| CN101638797B true CN101638797B (en) | 2011-03-16 |
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| CN102409358A (en) * | 2011-12-26 | 2012-04-11 | 贵阳铝镁设计研究院有限公司 | Aluminum electrolysis cell cathode steel rod hot-line welding mechanical-electrical shunt device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270993A (en) * | 1979-04-02 | 1981-06-02 | Mitsubishi Light Metal Industries, Limited | Method of stabilizing an aluminum metal layer in an aluminum electrolytic cell |
| CN2851290Y (en) * | 2005-11-24 | 2006-12-27 | 贵阳铝镁设计研究院 | Device for use in short circuit power failure in aluminium electrolytic tank |
| CN101451248A (en) * | 2008-12-02 | 2009-06-10 | 北方工业大学 | Novel electrolytic bath series stopping and running method and shunt apparatus and system thereof |
-
2009
- 2009-08-27 CN CN2009103061909A patent/CN101638797B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270993A (en) * | 1979-04-02 | 1981-06-02 | Mitsubishi Light Metal Industries, Limited | Method of stabilizing an aluminum metal layer in an aluminum electrolytic cell |
| CN2851290Y (en) * | 2005-11-24 | 2006-12-27 | 贵阳铝镁设计研究院 | Device for use in short circuit power failure in aluminium electrolytic tank |
| CN101451248A (en) * | 2008-12-02 | 2009-06-10 | 北方工业大学 | Novel electrolytic bath series stopping and running method and shunt apparatus and system thereof |
Non-Patent Citations (1)
| Title |
|---|
| 曾水平，蔡祺风，梅炽，刘业翔.上插自焙铝电解槽母线配置探讨.《轻金属》.1996,(第2期),32-34. * |
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