CN212533148U - Upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell - Google Patents
Upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell Download PDFInfo
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- CN212533148U CN212533148U CN202022201998.5U CN202022201998U CN212533148U CN 212533148 U CN212533148 U CN 212533148U CN 202022201998 U CN202022201998 U CN 202022201998U CN 212533148 U CN212533148 U CN 212533148U
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Abstract
The utility model discloses a double-magnesium-collecting-chamber partition-plate-free magnesium electrolytic cell with an upper inserted anode in the middle. Three electrolysis chambers and two magnesium collecting chambers are arranged in the length direction of the electrolysis bath. The unique graphite strip anode assembly structure and the design of the V-shaped groove channel, the circulation hole and the arch-shaped channel ensure that the overall groove structure design of the electrolytic cell is more reasonable, the electrolyte circulation is strengthened, the heat and mass transfer effects are enhanced, and the temperature of the electrolytic chamber and the magnesium collecting chamber is uniform; the partition wall is arranged between the magnesium collecting chamber and the electrolytic chamber, so that chlorine generated after electrolysis is isolated in the electrolytic chamber, magnesium beads generated after electrolysis smoothly circulate to the magnesium collecting chamber through the directional channel along with circulating high-temperature melt, the magnesium beads are collected in the magnesium collecting chamber, the separation of magnesium and chlorine is better realized, the secondary reaction of magnesium and chlorine is reduced, the collection of magnesium is enhanced, the current efficiency of magnesium electrolysis is increased, and the operation of an electrolytic cell is more stable.
Description
Technical Field
The utility model relates to the technical field of magnesium electrolytic cells, in particular to a double-magnesium-collecting-chamber partition-free magnesium electrolytic cell with an upper inserted anode.
Background
The industrial production method of magnesium metal includes metallothermic reduction method and electrolytic method. The electrolytic bath is one of the key devices for smelting magnesium by an electrolytic method, and the structural form and the performance of the electrolytic bath directly influence various technical and economic indexes of the product, such as cost, energy consumption and the like. At present, the electrolytic cell types used for industrial production of magnesium metal are divided into: the partition plate groove, the non-partition plate groove and the multi-polar groove are arranged. The traditional clapboard groove has the defects of high power consumption, low concentration of produced chlorine, more leaked chlorine, serious environmental pollution, high labor intensity of workers and the like, and is eliminated. The multipole cell is mainly applied to a magnesium electrolysis system matched with titanium sponge production, and is characterized by low direct current power consumption and high requirement on the quality of an electrolysis raw material, namely molten magnesium chloride. Compared with the traditional electrolytic cell with the partition plate, the electrolytic cell without the partition plate has the advantages of good sealing performance, higher concentration of recovered chlorine, lower direct current power consumption and the like, and the outstanding advantages enable the electrolytic cell without the partition plate to be rapidly applied to the industrial production of electrolytic magnesium.
At present, the capacity of a mature diaphragm-free magnesium electrolytic cell applied in China is mostly 100-120 KA, the cell type mainly comprises a diaphragm-free magnesium electrolytic cell with a single magnesium collecting chamber at the middle part of an upper inserted anode and a diaphragm-free magnesium electrolytic cell with a single magnesium collecting chamber at the edge part of the upper inserted anode, and the current efficiency is about 70-75%. For the tank-type electrolytic cell, in the actual production and operation process, the outstanding problems of poor overall operation effect and short period are caused by more accumulated slag, low temperature of the cell bottom and the magnesium collecting chamber, blockage of the arch wall, difficult derivation of molten magnesium and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims to provide a double-magnesium-collecting chamber partition-free magnesium electrolytic cell with an upper inserted anode.
The utility model relates to a technical scheme of two collection magnesium rooms of positive pole middle part do not have baffle magnesium electrolysis groove inserts:
a double-magnesium-collecting-chamber diaphragm-free magnesium electrolytic cell with an upper inserted anode in the middle part is characterized in that an electrolytic cell I5, an electrolytic cell II 6, an electrolytic cell III 7, a magnesium-collecting chamber I8 and a magnesium-collecting chamber II 9 are arranged in a cell shell 1, wherein the magnesium-collecting chamber I8 is positioned between the electrolytic cell I5 and the electrolytic cell II 6; the second magnesium collecting chamber 9 is positioned between the second electrolytic chamber 6 and the third electrolytic chamber 7; the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9 are respectively built by two partition walls 12, and the partition walls 12 separate the first electrolytic chamber 5, the second electrolytic chamber 6, the third electrolytic chamber 7, the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9; a plurality of V-shaped groove channels 13 are arranged in the middle of the partition wall 12, the V-shaped groove channels 13 are staggered in the horizontal direction, and a plurality of melt circulation holes 14 are arranged below the V-shaped groove channels 13; the bottom of the partition wall 12 is provided with an arch-shaped channel 15; a first tank cover 20, a second tank cover 19 and a third tank cover 18 are respectively arranged above the first electrolytic chamber 5, the second electrolytic chamber 6 and the third electrolytic chamber 7; a plurality of chlorine discharge pipes 17 are sequentially arranged on the first tank cover 20, the second tank cover 19 and the third tank cover 18; a plurality of groups of anodes 10 are inserted into the first electrolysis chamber 5, the second electrolysis chamber 6 and the third electrolysis chamber 7; a plurality of groups of cathodes 11 are inserted between the anodes 10; and gas collecting hoods 21 are arranged above the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9, and flue gas discharge pipes 16 are arranged above the rear end walls of the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9.
Further, the cell shell 1 is sequentially built by clay refractory bricks 4 and diatomite insulating bricks 3 from inside to outside, and the outermost layer is wrapped by asbestos cloth 2.
Furthermore, the anodes 10 are provided with ten groups, and each group is formed by assembling seven graphite strips 26; the graphite strips 26 of three groups of anodes 10 adopt seven graphite strips with the same length, one graphite strip 26 positioned in the middle of the graphite strips 26 spliced by the seven groups of anodes 10 is half of the length of other graphite strips, and the cathode 11 is a carbon steel electrode and is respectively arranged between each group of anodes 10; forming magnesium liquid and electrolyte directional channel openings 23 in the middle of the anode 10 and higher than the upper edge of the cathode 11; wherein, the first electrolytic chamber 5 and the third electrolytic chamber 7 respectively have three groups of anodes 10, and the anodes 10 with the short graphite strips 26 respectively have two groups; the second cell 6 has four sets of anodes 10, of which three sets of anodes 10 with short graphite strips 26.
Furthermore, the edge of the middle of the upper part of the graphite strips 26 is provided with a small sawtooth-shaped groove 22, so that a channel for the electrolyte to flow horizontally is formed after the graphite strips 26 are spliced.
Furthermore, the top end parts of the seven graphite strips 26 are fixed into a group by copper clamping plates 27 through bolts 24, and the copper clamping plates 27 and the anode bus aluminum plate 25 are cast into a whole by aluminum water in the graphite die, so that the contact pressure drop is reduced, and the electric energy is saved.
Further, the partition wall 12 is made of high-quality clay bricks.
Furthermore, the flue gas discharge pipe 16 and the chlorine gas discharge pipe 17 are both made of cement-asbestos pipes, and have the characteristics of no magnetism, good strength, difficult damage and good insulating property.
Compared with the prior art, the utility model discloses following beneficial effect has:
three electrolysis chambers and two magnesium collecting chambers are arranged in the length direction of the electrolysis bath. The unique graphite strip anode assembly structure and the design of the V-shaped groove channel, the circulation hole and the arch-shaped channel ensure that the overall groove structure design of the electrolytic cell is more reasonable, the electrolyte circulation is strengthened, the heat and mass transfer effects are enhanced, and the temperature of the electrolytic chamber and the magnesium collecting chamber is uniform; the partition wall is arranged between the magnesium collecting chamber and the electrolytic chamber, so that chlorine generated after electrolysis is isolated in the electrolytic chamber, magnesium beads generated after electrolysis smoothly circulate to the magnesium collecting chamber through the directional channel along with circulating high-temperature melt, the magnesium beads are collected in the magnesium collecting chamber, the separation of magnesium and chlorine is better realized, the secondary reaction of magnesium and chlorine is reduced, the collection of magnesium is enhanced, the current efficiency of magnesium electrolysis is increased, and the operation of an electrolytic cell is more stable.
Drawings
FIG. 1 is a sectional view of the upper part of the double-chamber magnesium cell without partition board of the upper anode of the utility model along the A-A direction;
FIG. 2 is a B-B direction cross-sectional view of the double magnesium collecting chamber partition-free magnesium electrolytic cell in the middle of the upper inserted anode of the utility model;
FIG. 3 is a C-C sectional view of the double-chamber diaphragm-free magnesium electrolytic cell with the upper inserted anode in the middle of the utility model;
in the figure: 1. a tank shell; 2. asbestos cloth; 3. diatomite insulating bricks; 4. clay refractory bricks; 5. A first electrolytic chamber; 6. a second electrolytic chamber; 7. a third electrolytic chamber; 8. a magnesium collecting chamber I; 9. a second magnesium collecting chamber; 10. an anode; 11. a cathode; 12. a partition wall; 13. a V-groove channel; 14. a melt circulation hole; 15. an arch-shaped channel; 16. a flue gas discharge pipe; 17. a chlorine gas discharge pipe; 18. a third groove cover; 19. a second groove cover; 20. a first groove cover; 21. a gas-collecting hood; 22. a small sawtooth-shaped groove; 23. a directional passage port; 24. a bolt; 25. an anode branch bus aluminum plate; 26. graphite strips; 27. copper splint.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to the attached drawings 1-3, the utility model provides a double-magnesium-collecting-chamber diaphragm-free magnesium electrolytic cell with an upper inserted anode, wherein the electrolytic cell is arranged in a cell shell 1 by a first electrolytic chamber 5, a second electrolytic chamber 6, a third electrolytic chamber 7, a first magnesium-collecting chamber 8 and a second magnesium-collecting chamber 9, wherein the first magnesium-collecting chamber 8 is positioned between the first electrolytic chamber 5 and the second electrolytic chamber 6; the second magnesium collecting chamber 9 is positioned between the second electrolytic chamber 6 and the third electrolytic chamber 7; the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9 are respectively built by two partition walls 12, and the partition walls 12 separate the first electrolytic chamber 5, the second electrolytic chamber 6, the third electrolytic chamber 7, the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9; a plurality of V-shaped groove channels 13 are arranged in the middle of the partition wall 12, the V-shaped groove channels 13 are staggered in the horizontal direction, and a plurality of melt circulation holes 14 are arranged below the V-shaped groove channels 13; the bottom of the partition wall 12 is provided with an arch-shaped channel 15; a first tank cover 20, a second tank cover 19 and a third tank cover 18 are respectively arranged above the first electrolytic chamber 5, the second electrolytic chamber 6 and the third electrolytic chamber 7; a plurality of chlorine discharge pipes 17 are sequentially arranged on the first tank cover 20, the second tank cover 19 and the third tank cover 18; a plurality of groups of anodes 10 are inserted into the first electrolysis chamber 5, the second electrolysis chamber 6 and the third electrolysis chamber 7; a plurality of groups of cathodes 11 are inserted between the anodes 10; gas collecting hoods 21 are arranged above the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9, and flue gas discharge pipes 16 are arranged above rear end walls of the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9.
Further, the shell 1 is built by clay firebricks 4 and diatomite insulating bricks 3 from inside to outside in sequence, and the outermost layer is wrapped by asbestos cloth 2.
Furthermore, the anode 10 has ten groups, and each group is formed by assembling seven graphite strips 26; the graphite strips 26 of three groups of anodes 10 adopt seven graphite strips with the same length, one graphite strip 26 positioned in the middle of the graphite strips 26 spliced by the seven groups of anodes 10 is half of the length of other graphite strips, and the cathode 11 is a carbon steel electrode and is respectively arranged between each group of anodes 10; forming magnesium liquid and electrolyte directional channel openings 23 in the middle of the anode 10 and higher than the upper edge of the cathode 11; wherein, the first electrolytic chamber 5 and the third electrolytic chamber 7 respectively have three groups of anodes 10, and the anodes 10 with the short graphite strips 26 respectively have two groups; the second cell 6 has four sets of anodes 10, of which three sets of anodes 10 with short graphite strips 26.
Preferably, the jagged small grooves 22 are arranged at the edges of the middle parts of the graphite strips 26, so that a channel for the electrolyte to flow horizontally is formed after the graphite strips 26 are spliced.
Optimally, the top end parts of the seven graphite strips 26 are fixed into a group by the copper clamping plates 27 through the bolts 24, and the copper clamping plates 27 and the anode bus aluminum plate 25 are cast into a whole by aluminum water in the graphite die, so that the contact pressure drop is favorably reduced, and the electric energy is saved.
Preferably, the partition wall 12 is constructed of high quality clay bricks.
Optimally, the smoke discharge pipe 16 and the chlorine discharge pipe 17 are both made of cement-asbestos pipes, and have the characteristics of no magnetism, good strength, difficult damage and good insulating property.
When in specific use: firstly, checking the sealing performance of the device and whether each part can normally operate; then starting electrolytic magnesium production: raw materials containing magnesium chloride are added from the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9 periodically, magnesium beads generated by the first electrolytic chamber 5 and the third electrolytic chamber 7 are spliced together with electrolyte through a directional channel opening 23 on the first electrolytic chamber 5 and the third electrolytic chamber 7 and a small sawtooth-shaped groove 22 on a graphite strip 26 to form a channel, and the channel, a V-shaped groove channel 13, a melt circulation hole 14 and an arch-shaped channel 15 on a partition wall 12 are respectively guided to the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9; one part of magnesium beads generated in the middle electrolytic chamber II 6 is guided to the magnesium collecting chamber I8, and the other part of the magnesium beads is guided to the magnesium collecting chamber II 9; magnesium beads generated in the first electrolytic chamber 5, the second electrolytic chamber 6 and the third electrolytic chamber 7 are collected in the first magnesium collecting chamber 8 and the second magnesium collecting chamber 9 to form a magnesium metal liquid layer, and the magnesium metal liquid layer is periodically extracted by a vacuum ladle and sent to a refining ingot; chlorine generated by the first electrolysis chamber 5, the second electrolysis chamber 6 and the third electrolysis chamber 7 is isolated in the respective electrolysis chambers, and is respectively pumped into a chlorine recovery system through a plurality of chlorine discharge pipes 17 on the first electrolysis chamber 5, the second electrolysis chamber 6 and the first cover 20, the second cover 19 and the third cover 18 above the third electrolysis chamber 7 under the negative pressure action of a chlorine compressor.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a go up two collection magnesium room no baffle magnesium electrolysis trough in positive pole middle part of inserting, arrange in cell shell (1) by electrolysis room one (5), electrolysis room two (6), electrolysis room three (7), collection magnesium room one (8) and collection magnesium room two (9) in this electrolysis trough, its characterized in that: the magnesium collecting chamber I (8) is positioned between the electrolysis chamber I (5) and the electrolysis chamber II (6); the second magnesium collecting chamber (9) is positioned between the second electrolytic chamber (6) and the third electrolytic chamber (7); the magnesium collecting chamber I (8) and the magnesium collecting chamber II (9) are respectively built by two partition walls (12), and the partition walls (12) separate the electrolysis chamber I (5), the electrolysis chamber II (6), the electrolysis chamber III (7), the magnesium collecting chamber I (8) and the magnesium collecting chamber II (9); a plurality of V-shaped groove channels (13) are arranged in the middle of the partition wall (12), the V-shaped groove channels (13) are staggered in the horizontal direction, and a plurality of melt circulation holes (14) are arranged below the V-shaped groove channels; the bottom of the partition wall (12) is provided with an arch-shaped channel (15); a first tank cover (20), a second tank cover (19) and a third tank cover (18) are respectively arranged above the first electrolytic chamber (5), the second electrolytic chamber (6) and the third electrolytic chamber (7); a plurality of chlorine discharge pipes (17) are sequentially arranged on the first tank cover (20), the second tank cover (19) and the third tank cover (18); a plurality of groups of anodes (10) are inserted into the first electrolysis chamber (5), the second electrolysis chamber (6) and the third electrolysis chamber (7); a plurality of groups of cathodes (11) are inserted between the anodes (10); and gas collecting hoods (21) are arranged above the first magnesium collecting chamber (8) and the second magnesium collecting chamber (9), and flue gas discharge pipes (16) are arranged above rear end walls of the first magnesium collecting chamber (8) and the second magnesium collecting chamber (9).
2. The upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell according to claim 1, which is characterized in that: the tank shell (1) is built by clay refractory bricks (4) and diatomite insulating bricks (3) from inside to outside in sequence, and the outermost layer is wrapped by asbestos cloth (2).
3. The upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell according to claim 1, which is characterized in that: the anodes (10) are provided with ten groups, and each group is formed by assembling seven graphite strips (26); the graphite strips (26) of three groups of anodes (10) adopt seven graphite strips with the same length, one graphite strip (26) positioned in the middle of the graphite strips (26) spliced by the seven groups of anodes (10) is half of the length of other graphite strips, and the cathodes (11) are carbon steel electrodes and are respectively arranged between each group of anodes (10); forming magnesium liquid and electrolyte directional channel openings (23) in the middle of the anode (10) and higher than the upper edge of the cathode (11); wherein, the first electrolytic chamber (5) and the third electrolytic chamber (7) respectively have three groups of anodes (10), and the anodes (10) with the short graphite strips (26) respectively have two groups; the second electrolytic chamber (6) has four groups of anodes (10), wherein the anodes (10) with the short graphite strips (26) have three groups.
4. The upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell according to claim 3, characterized in that: the edge of the middle part of the upper part of each graphite strip (26) is provided with a small sawtooth-shaped groove (22), so that a channel for the horizontal flow of electrolyte is formed after the graphite strips (26) are spliced.
5. The upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell according to claim 3, characterized in that: the top end parts of the seven graphite strips (26) are fixed into a group by copper clamping plates (27) through bolts (24), and the copper clamping plates (27) and the anode branch bus aluminum plates (25) are cast into a whole by aluminum water in a graphite mold.
6. The upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell according to claim 1, which is characterized in that: the partition wall (12) is built by high-quality clay bricks.
7. The upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell according to claim 1, which is characterized in that: the smoke discharge pipe (16) and the chlorine discharge pipe (17) are both made of cement asbestos pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022201998.5U CN212533148U (en) | 2020-09-30 | 2020-09-30 | Upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022201998.5U CN212533148U (en) | 2020-09-30 | 2020-09-30 | Upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell |
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| Publication Number | Publication Date |
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| CN212533148U true CN212533148U (en) | 2021-02-12 |
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| CN202022201998.5U Active CN212533148U (en) | 2020-09-30 | 2020-09-30 | Upper-inserted anode middle double-magnesium-collection-chamber diaphragm-free magnesium electrolytic cell |
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| CN (1) | CN212533148U (en) |
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