CN107557819A - A kind of electrolysis of calcium metal groove using bipolar electrode - Google Patents
A kind of electrolysis of calcium metal groove using bipolar electrode Download PDFInfo
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- CN107557819A CN107557819A CN201710722025.6A CN201710722025A CN107557819A CN 107557819 A CN107557819 A CN 107557819A CN 201710722025 A CN201710722025 A CN 201710722025A CN 107557819 A CN107557819 A CN 107557819A
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- bipolar electrode
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Abstract
A kind of electrolysis of calcium metal groove using bipolar electrode, including bipolar electrode system, bath surface sealing system, liner heat-insulation system, upper part gas collection system.Bath surface sealing system, which is provided with chlorine escape and feed opening, dividing plate and calcium metal suction outlet, liner heat-insulation system, includes insulation system, heat-insulation system and pot shell support system.Every piece of bipolar electrode one side is used as anode, another side is as negative electrode, the combination of each pair electrode, it can be seen as an electrolytic cell, further each and every one it is connected into series, in the course of work, electric current flows into first anode from one end of groove, the cathode plane of next electrode is flowed into through electrolyte again, eventually arrives at last negative electrode of groove tail.Therefore, electrolysis can be run under than relatively low cell current and higher tank voltage, be easier electric current conveying, and its pole span can be controlled within the scope of one less, and whole electrolytic cell is extremely compact, has high output capacity.
Description
Technical field
The invention belongs to calcium electrolysis tech field, and in particular to a kind of electrolysis of calcium metal groove using bipolar electrode.
Technical background
The industrialized production of high pure metal calcium mainly uses the fused salt electrolysis process of calcium chloride, the electricity that this method uses according to it
It is extremely different, it is divided into Contact cathod method and liquid cathode method again.Contact cathod method produces to obtain the copper calcium alloy rich in calcium, then passes through
Evaporation obtains calcium metal, and Contact cathod rule directly obtains calcium metal by electrolysis, belongs to calcium production most straightforward approach.Pass
The Contact cathod method of system proposed first by W.Rathenau in 1904, this method use iron staff as negative electrode, graphite carbon block for
Anode is in CaCl2And CaF2Electrolysis production is carried out in the electrolyte of composition, because the density of electrolyte is much larger than molten metal calcium
Density, thus design of electrolysis cells be negative electrode close to groove top, anode in groove bottom, electrolytic process, existed by electrochemical reaction
Calcium is separated out on negative electrode, chlorine is separated out on anode, and because the density of calcium is less than fused calcium chloride, and swim in the table of electrolyte
Face, with being condensate in during steel cathode contacts on negative electrode.With the progress of electrolysis, negative electrode is constantly accordingly lifted, and calcium is in cathode bottom
Form the club of a carrot shape.Electrolysis starts, the electrolysis bath ebullition below negative electrode, produces calcium pearl, and calcium pearl one touches the moon
Extremely cold surface is just condensed, and is bonded above anode.With the lifting of negative electrode, new calcium pearl is regenerated below negative electrode.
This method is to be normally carried out electrolysis most directly to produce the method for high pure metal calcium, it is necessary to uses high the moon
Electrode current density (40~60A/cm2) and high tank voltage (20~30V), simultaneously as existing industry law electrolysis production metal
Calcium, its groove profile is often less than normal, typically by the use of iron staff as negative electrode, causes the electric current of electrolytic cell larger, and actual output is smaller, this
Be Contact cathod method electrolysis production calcium yield poorly with power consumption it is high the reason for.Meanwhile using iron staff as negative electrode, its temperature is to electrolysis
Whether process influence is big, and practical operation often relies on the manual modes such as original artificial naked-eye observation, causes calcium chloride to be electrolysed labor
Dynamic productivity ratio is very low.
Therefore, to solve conventional contacts method production calcium metal institute high energy consumption, yield poorly and problem that labor productivity is low, must
A kind of new electrolytic cell must be designed, that is, first has to reform the structure of electrode, and then the effusion to chlorine, calcium metal again
Precipitation mode innovated, so as to change whole production process, realize the continuous of electrolysis of calcium metal, low energy consumption, efficiently production.
The content of the invention
, can be right using the electrolytic cell the purpose of the present invention is to propose to a kind of electrolysis of calcium metal groove using bipolar electrode
The production process of existing Contact cathod electrolysis calcium is improved, the collection region that the calcium that electrolysis obtains specially is designed, so as to real
Efficient, the large-scale production of existing calcium electrolysis, eliminate many drawbacks of contact method calcium electrolysis, lift its technical merit.
In order to solve the above-mentioned technical problem, a kind of bipolar electrode system including being arranged in pot shell provided by the invention
System, bath surface sealing system and liner heat-insulation system, the liner heat-insulation system include insulating barrier and are wrapped in insulating barrier
Outside heat-insulation layer, the insulating barrier surround the electrolysis zone of a upper opening, and the electrolysis zone is by adjacent bipolar electrode
System partitioning is multiple single workspaces, the electrode of the bipolar electrode system opposite working in each workspace on the contrary,
The upper opening of each workspace is sealed by bath surface sealing system, and the bath surface sealing system is provided with chlorine
Gas is escaped and feed opening and calcium metal suction outlet.
The bipolar electrode system includes bipolar electrode, and reticulated conductive skeleton is provided with the bipolar electrode.Often
Block bipolar electrode one side is used as anode, and another side the combination of each pair bipolar electrode, can be seen as an electricity as negative electrode
Solve groove, another each and every one to be connected into series, in the course of work, electric current flows into first anode from one end of groove, then through being electrolysed mass flow
Enter the cathode plane of next electrode, eventually arrive at last negative electrode of groove tail.Therefore, electrolysis can than relatively low cell current and
Compare and run under high tank voltage, be easier electric current conveying, and its pole span can be controlled within the scope of one is less,
Whole electrolytic cell is extremely compact, has high output capacity.
The reticulated conductive skeleton includes leading torch and multigroup conductive group to be vertically equally spaced on leading torch, institute
State leading torch to be arranged between two electrodes of bipolar electrode, every group of conductive group includes connection bus bar, installed in connection mother
Multiple conducting rods and multiple branch's conductor wires on conducting rod in line bar, the more connection bus bars pass through leading electricity
Rod is connected, and more conducting rods are separately installed with the both sides of leading torch on every connection bus bar, is provided with conducting rod point
Branch conductor wire, branch's conductor wire form herringbone in conducting rod, and the conducting rod and branch's conductor wire form tree-shaped conductive structure.
Described bipolar electrode is made up of the graphite carbon block of cuboid, and thickness is 50~100mm, length and width and electrolytic cell chi
It is very little to match.
The top of the pot shell is provided with the upper part gas collection system of hermetic electrolyte area upper opening.
The chlorine escape and the circular hole that feed opening is 30~150mm of aperture, and chlorine escape and feed opening are close to double
The anode side of polar electric pole system.
The calcium metal suction outlet is close to the negative electrode side of bipolar electrode system.
The bath surface sealing system for high-temperature resistant aluminium oxide insulation board, the high-temperature resistant aluminium oxide insulation board with
Electrolyte contact in workspace, the high-temperature resistant aluminium oxide insulation board sink to 5~10mm in electrolyte.
Solution matter surface sealed system also includes dividing plate, and the dividing plate contacts with the electrolyte in workspace, and stretches into electricity
Solve 20~50mm of matter.
Due to having larger improvement compared to existing contact method calcium electrolytic cell using said structure, the present apparatus.First, compare
Conventional contacts method calcium electrolytic cell, the bipolar electrode that one's duty proposes, original use iron staff is fundamentally changed as negative electrode mould
Formula, the production capacity of electrolytic cell is allowed to have the increase of geometry multiple.Secondly, the present invention is filled by designing top seal with cut-off
Put, the enrichment for not only improving calcium metal separates out with convenient, is advantageous to the discharge of chlorine caused by anode again, so as to realize calcium
The extensive continuous industrial production of electrolysis.Therefore current contact method can fully be avoided using calcium electrolytic cell provided by the invention
The defects of production capacity of calcium electrolytic cell is low, operation inconvenience and energy consumption is higher, can be the developing direction of contact method calcium electrolytic cell of future generation.
It is of the invention to possess following advantage compared with existing contact method calcium cell construction：
(1) being substantially improved for single groove production capacity of calcium electrolysis can be realized using the electrolytic cell of the present invention, reduces electrolytic cell
Cost of investment.Because the calcium electrolytic cell of the present invention is connected in a groove equivalent to several small-sized calcium electrolytic cells, therefore single groove
The change of matter can occur for production capacity, and due to the arrangement of bipolar electrode, make the utilization rate in space in electrolytic cell high, significantly drop
The cost of investment of low calcium electrolytic cell.
(2) serialization and low energy consumption of calcium electrolytic process can be realized using the electrolytic cell of the present invention.The calcium metal of gained
Still converge in groove top, but it is different with current methods be, the present invention allow calcium metal be in one be hedged off from the outer world every
Under plate protection, vacuum precipitation can be very easily utilized, therefore electrolytic process is a continuous, process for low energy consumption, and can root
Single groove extension is carried out according to actual conditions or the series connection of more grooves extends, and its event heavy industrialization will also become very easy.
(3) quick, the high maintenance of electrolytic cell can be realized using the electrolytic cell of the present invention.Due to the bipolar plates of electrolytic cell
Material is more universal, and its maintenance management, the precipitation of calcium operation etc. will become very quick, efficient, and not consuming due to anode,
Therefore the operation that electrolytic cell can be steady in a long-term.
In summary, the present invention is that a kind of can realize utilizes direct extensive, the continuous high-efficient production calcium metal of contact method
Electrolytic cell, it can prepare and provide safeguard for high-purity the extensive of calcium of industry, low energy consumption, low cost.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of bipolar plates of the present invention.
The schematic diagram of conductive network in the bipolar plates of the present invention of Fig. 3 positions.
In figure, 1- bipolar electrodes system, 2- bath surfaces sealing system, 3- liners heat-insulation system, 4- upper part gas collections
System, the escape of 5- chlorine and feed opening, 6- dividing plates, 7- calcium metals suction outlet, 8- electrolyte, 9- insulating lids, 10- insulating barriers,
11- calcium metals, 12- reticulated conductives skeleton, 13- branches conductor wire, 14- conducting rods, 15- connection bus bars.
Embodiment
The present invention is described in further details below with reference to figure and specific implementation process.
Embodiment 1：
As shown in figure 1, a kind of electrolysis of calcium metal groove using bipolar electrode, by bipolar electrode system 1, electrolyte meter
Face sealing system 2, liner heat-insulation system 3, upper part gas collection system 4 form.Wherein, bath surface sealing system is provided with chlorine and escaped
Ease and feed opening 5, dividing plate 6 and calcium metal suction outlet 7, liner heat-insulation system include insulation system, heat-insulation system and pot shell and supported
System.
The bipolar electrode system 1 of calcium electrolytic cell is the graphite carbon block composition of a monoblock, and its outward appearance is a cuboid
Structure, thickness 75mm, graphite carbon block is interior to set reticulated conductive skeleton 12, and the reticulated conductive skeleton 12 is copper using metal, bag
Include multigroup conductive group to be vertically equally spaced, every group of conductive group includes connecting bus bar 15, more on bus bar 15 installed in connecting
Individual conducting rod 14 and multiple branch's conductor wires 13 on conducting rod 14, as shown in figure 3, in this example, conduction group is provided with five
Group, five connection bus bars 15 are connected by leading torch, are symmetrically pacified centered on leading torch on every connection bus bar 15
Equipped with four conducting rods 14, two pairs of branch's conductor wires 13 are symmetrically installed on conducting rod 14, form herringbone conductive branches, conducting rod
14 and branch's conductor wire 13 form tree root shape conductive structure, in this example, each tree root shape structure contains conductive point of two herringbones
Branch, conducting rod 14 are arranged between 1 two electrodes of bipolar electrode system, dominate a diameter of 1~3mm of torch, dominate torch
Connected again with external diameter.The material of bath surface sealing system 2 can be high-temperature resistant aluminium oxide insulation board, it is necessary to cover whole electrolysis
The upper surface of matter 8, and immerse to electrolyte, immerse chlorine escape with electrolyte is advisable with 55~10mm of feed opening；In electrolyte meter
Chlorine escape and feed opening 5 are provided with face sealing system 2, the circular hole for being a 30~150mm of aperture, its position is close to anode
Side；In the middle and lower part of bath surface sealing system 2, dividing plate 6 is installed, its material and the material of bath surface sealing system 2
Matter is identical, is advisable with stretching to 20~50mm in dielectric, and described calcium metal suction outlet 7 is located at close to negative electrode side.
Bipolar electrode can fundamentally change original use iron staff as cathode mode used by the embodiment, allow
The production capacity of electrolytic cell has the increase of geometry multiple, in addition, by designing top seal and partition apparatus, not only improves gold
The enrichment for belonging to calcium separates out with convenient, is advantageous to the discharge of chlorine caused by anode again, so as to realize the extensive of calcium electrolysis
Continuous industrial production.
Embodiment 2：
As shown in Fig. 2 the bipolar plate structure of described new calcium electrolytic cell is a kind of structure for separating both positive and negative polarity, in order to
Ensure that the voltage above and below reaction electrolysis is consistent, some highly conductive copper rods are set among bipolar plates, with equalized bipolar plate
CURRENT DISTRIBUTION, the other parts of calcium electrolytic cell are same as Example 1.Electrolysis of calcium metal can equally be realized using the electrolytic cell
Low energy consumption, high efficiency, the production of high production capacity of process.
Claims (9)
- A kind of 1. electrolysis of calcium metal groove using bipolar electrode, it is characterised in that：Including the bipolarity electricity being arranged in pot shell Electrode systems (1), bath surface sealing system (2) and liner heat-insulation system (3), the liner heat-insulation system (3) include insulation Layer and the heat-insulation layer being wrapped in outside insulating barrier, the insulating barrier surround the electrolysis zone of a upper opening, the electrolysis zone quilt Adjacent bipolar electrode system (1) is divided into multiple single workspaces, the bipolar electrode system (1) in each workspace The electrode of opposite working is on the contrary, the upper opening of each workspace passes through bath surface sealing system (2) sealing, the electricity Solve matter surface sealed system and be provided with chlorine escape and feed opening (5) and calcium metal suction outlet (7).
- 2. the electrolysis of calcium metal groove according to claim 1 using bipolar electrode, it is characterised in that：The bipolarity electricity Electrode systems (1) include bipolar electrode, and reticulated conductive skeleton (12) is provided with the bipolar electrode.
- 3. the electrolysis of calcium metal groove according to claim 2 using bipolar electrode, it is characterised in that：The reticulated conductive Skeleton (12) includes leading torch and multigroup conductive group to be vertically equally spaced on leading torch, and the leading torch is arranged on Between two electrodes of bipolar electrode, every group of conductive group includes connecting bus bar (15), more on bus bar (15) installed in connecting Individual conducting rod (14) and multiple branch's conductor wires (13) on conducting rod (14), the more connection bus bars (15) are logical Cross leading torch to connect, more conducting rods (14) be separately installed with the both sides of leading torch on every connection bus bar (15), Branch's conductor wire (13) is installed, the conducting rod (14) and branch's conductor wire (13) form tree-shaped lead on the conducting rod (14) Electric structure.
- 4. the electrolysis of calcium metal groove according to claim 2 using bipolar electrode, it is characterised in that：Described bipolarity Electrode is made up of the graphite carbon block of cuboid, and thickness is 50~100mm, and length and width match with cell dimension.
- 5. the electrolysis of calcium metal groove according to claim 4 using bipolar electrode, it is characterised in that：The pot shell it is upper Side is provided with the upper part gas collection system (4) of hermetic electrolyte area upper opening.
- 6. the electrolysis of calcium metal groove according to claim 5 using bipolar electrode, it is characterised in that：The chlorine escape Circular hole with feed opening (5) for 30~150mm of aperture, and anode of the chlorine escape with feed opening close to bipolar electrode system Side.
- 7. the electrolysis of calcium metal groove according to claim 6 using bipolar electrode, it is characterised in that：The calcium metal is inhaled Outlet is close to the negative electrode side of bipolar electrode system.
- 8. the electrolysis of calcium metal groove according to claim 7 using bipolar electrode, it is characterised in that：The electrolyte meter Face sealing system (2) for high-temperature resistant aluminium oxide insulation board, the high-temperature resistant aluminium oxide insulation board and the electrolyte in workspace Contact, the high-temperature resistant aluminium oxide insulation board sink to 5~10mm in electrolyte.
- 9. the electrolysis of calcium metal groove using bipolar electrode according to one of claim 1 to 8, it is characterised in that：Xie Zhi Surface sealed system (2) also includes dividing plate, and the dividing plate contacts with the electrolyte in workspace, and stretch into electrolyte 20~ 50mm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710722025.6A CN107557819A (en) | 2017-08-22 | 2017-08-22 | A kind of electrolysis of calcium metal groove using bipolar electrode |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA920087A (en) * | 1969-06-30 | 1973-01-30 | Montecatini Edison S.P.A. | Multi-cell furnace for the electrolytic production of aluminum |
| CN102242377A (en) * | 2011-07-02 | 2011-11-16 | 王连成 | Method for producing metal sodium through electrolysis in bipolar electrolytic cell |
| GB2483627A (en) * | 2010-04-06 | 2012-03-21 | Metalysis Ltd | A bipolar electrolysis cell and method of operation |
| CN102586805A (en) * | 2012-03-29 | 2012-07-18 | 北京科技大学 | Preparation method of metal magnesium by magnesium-containing mineral and equipment adopted by preparation method |
| CN203049053U (en) * | 2013-01-05 | 2013-07-10 | 汉中锌业特种材料有限公司 | 30KA liquid state cathode calcium metal electrolytic bath |
| CN103898553A (en) * | 2014-03-25 | 2014-07-02 | 中国科学院过程工程研究所 | Method for producing calcium metal by performing electrodeposition and refining synchronously |
-
2017
- 2017-08-22 CN CN201710722025.6A patent/CN107557819A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA920087A (en) * | 1969-06-30 | 1973-01-30 | Montecatini Edison S.P.A. | Multi-cell furnace for the electrolytic production of aluminum |
| GB2483627A (en) * | 2010-04-06 | 2012-03-21 | Metalysis Ltd | A bipolar electrolysis cell and method of operation |
| CN102242377A (en) * | 2011-07-02 | 2011-11-16 | 王连成 | Method for producing metal sodium through electrolysis in bipolar electrolytic cell |
| CN102586805A (en) * | 2012-03-29 | 2012-07-18 | 北京科技大学 | Preparation method of metal magnesium by magnesium-containing mineral and equipment adopted by preparation method |
| CN203049053U (en) * | 2013-01-05 | 2013-07-10 | 汉中锌业特种材料有限公司 | 30KA liquid state cathode calcium metal electrolytic bath |
| CN103898553A (en) * | 2014-03-25 | 2014-07-02 | 中国科学院过程工程研究所 | Method for producing calcium metal by performing electrodeposition and refining synchronously |
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