CN115652367A - Magnesium electrolysis bipolar tank assembly line - Google Patents
Magnesium electrolysis bipolar tank assembly line Download PDFInfo
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- CN115652367A CN115652367A CN202211112130.5A CN202211112130A CN115652367A CN 115652367 A CN115652367 A CN 115652367A CN 202211112130 A CN202211112130 A CN 202211112130A CN 115652367 A CN115652367 A CN 115652367A
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Abstract
The invention provides a magnesium electrolysis bipolar tank assembly line. The invention is composed of a head tank, a bipolar refining electrolytic tank, a bipolar production line electrolytic tank, intermediate tanks and a tail tank which are connected in series, wherein the head tank is positioned at the foremost end of the production line, the tail tank is positioned at the tail end of the production line, the intermediate tanks are arranged at intervals of 5-8 electrolytic tanks, all the tanks are connected by a chute, except the head tank and the tail tank, a bypass chute is arranged in each tank, and a high-temperature melt pump is arranged in the tail tank; when the magnesium electrolysis bipolar cell assembly line runs, the head cell is used for adding fused mass magnesium chloride and other electrolyte components, the middle cell is used for collecting magnesium, discharging magnesium and adding fused mass magnesium chloride, the tail cell is used for collecting magnesium and discharging magnesium, the high-temperature fused mass pump is used for conveying the electrolyte in the tail cell to the head cell, and all cells on the assembly line can discharge slag. By adopting the invention, the number of magnesium electrolytic tanks can be reduced under the condition of the same magnesium productivity, and the magnesium chloride feeding frequency and the magnesium discharging frequency of a magnesium electrolysis production line are reduced.
Description
Technical Field
The invention relates to the technical field of magnesium electrolysis, in particular to a magnesium electrolysis bipolar tank assembly line.
Background
The magnesium electrolysis technology applied in industry at present generally comprises a magnesium electrolysis multi-electrode cell technology and a magnesium electrolysis production line technology. The magnesium electrolysis multi-electrode cell technology adopts a single cell operation mode, when the number of the electrolysis cells is large, the magnesium chloride feeding frequency and the magnesium discharging frequency are high, the difficulty of production logistics organization is high, and the service life of the electrolysis cell is limited because the multi-electrode cell is not provided with a slag outlet; the magnesium production of a single electrolytic tank of the magnesium electrolysis production line is low, the concentration difference of magnesium chloride in electrolyte in each electrolytic tank along the production line is large, and the number of electrolytic tanks in the production line is limited. Therefore, there is a need to combine the advantages of the magnesium electrolysis multipolar cell technology and the magnesium electrolysis line technology and improve the same.
Disclosure of Invention
In view of the above-mentioned problems, a magnesium electrolysis bipolar cell assembly line is provided. The technical means adopted by the invention are as follows:
the utility model provides a magnesium electrolysis bipolar groove assembly line, includes first groove, bipolar refining electrolysis trough, bipolar assembly line electrolysis trough, intermediate tank and tail groove, links to each other through the chute between each groove, constitutes a magnesium electrolysis assembly line after establishing ties, first groove is located the assembly line foremost, the tail groove is located the assembly line end, sets up bipolar refining electrolysis trough of a plurality of groups, bipolar assembly line electrolysis trough between the two, sets up behind bipolar refining electrolysis trough, the bipolar assembly line electrolysis trough of predetermined quantity intermediate tank, first groove is used for adding fuse-element magnesium chloride and other components of electrolyte, bipolar refining electrolysis trough is used for refining electrolyte and electrolytic magnesium chloride, bipolar assembly line electrolysis trough is used for electrolytic magnesium chloride, intermediate tank is used for collecting magnesium, goes out magnesium and replenishes the magnesium chloride fuse-element, the tail groove is used for collecting magnesium and goes out magnesium, the chute is used for the circulation of electrolyte fuse-element.
Furthermore, except the joint of the head groove and the tail groove, a bypass chute is arranged on the chute connected with each groove and used for circulating the electrolyte melt under the preset condition.
Furthermore, the head tank is divided into two chambers, wherein one chamber is a feeding chamber for adding raw materials, the other chamber is a refining chamber, a group of graphite electrodes with the total direct current intensity of 15-20 kA are respectively arranged in the two chambers, 1-2 groups of alternating current heating electrodes are respectively arranged at the bottoms of the two chambers of the head tank, and a slag outlet is arranged in the refining chamber.
Furthermore, 1-2 bipolar refining electrolytic tanks are arranged behind the head tank, electrolytic chambers are arranged at two sides of each bipolar refining electrolytic tank, a magnesium collecting chamber is arranged in the middle of each bipolar refining electrolytic tank, graphite electrodes are inserted into the bipolar refining electrolytic tanks from bipolar refining electrolytic tank covers, and slag discharging cover plates are arranged in the magnesium collecting chambers.
Furthermore, the number of the bipolar assembly line electrolytic cells is 3-6, the two sides of the bipolar assembly line electrolytic cell are electrolytic chambers, the middle of the bipolar assembly line electrolytic cell is a magnesium collecting chamber, graphite electrodes are inserted into the bipolar assembly line electrolytic cell from the bottom of the side surface of the bipolar assembly line electrolytic cell, the magnesium collecting chamber is provided with a slag discharging cover plate, and the number of the bipolar assembly line electrolytic cells arranged in the whole magnesium electrolysis assembly line is 20-30.
Furthermore, when the number of the bipolar refining electrolytic cells and the number of the bipolar assembly line electrolytic cells reach 5-8, an intermediate cell is arranged behind the bipolar assembly line electrolytic cell at the tail end, the intermediate cells at two sides of the whole assembly line are symmetrically arranged, the intermediate cell is arranged at the middle section of the assembly line, 2 groups of alternating current heating electrodes are arranged at the bottom of the intermediate cell, and the intermediate cell is provided with a slag outlet.
Furthermore, 1 bipolar refining electrolytic cell and 4-7 bipolar assembly line electrolytic cells are sequentially arranged behind the first middle cell, and the electrolytic cells on the two sides of the magnesium electrolysis assembly line are equal in number and are symmetrically arranged.
Furthermore, be connected by high temperature melt pump, fuse-element pipeline and fuse-element passageway between tail groove and the head groove, the tail groove divide into two rooms, and one room is for collecting the magnesium room for collect magnesium and go out magnesium, and two rooms are the circulation room, high temperature melt pump sets up in two rooms the two room bottoms of tail groove all set up 1 ~ 2 group and exchange the heating electrode, two rooms of tail groove all set up the slag notch, the electrolyte in two rooms of tail groove flows through a fuse-element passageway entering head groove after the fuse-element pipeline is carried by high temperature melt pump.
Furthermore, two graphite electrode sheets are arranged between the graphite electrode plate and the steel cathode plate of the bipolar refining electrolytic cell and the bipolar assembly line electrolytic cell, and the graphite electrode sheets are not connected with a power supply; the direct current intensity of the magnesium electrolysis production line for electrolysis is set to be 180-260 kA, the temperature of the electrolyte in the first cell during operation is controlled to be 670-720 ℃, and the temperatures of the electrolyte in the bipolar refining electrolytic cell, the bipolar production line electrolytic cell and the intermediate cell are all controlled to be 670-685 ℃.
Furthermore, when the magnesium electrolysis production line runs, the amount of magnesium chloride melt added into the head tank accounts for 50-60% of the total amount of magnesium chloride melt added into the production line, the total amount of magnesium chloride melt added into each intermediate tank accounts for 40-50% of the total amount of magnesium chloride melt added into the production line, and the amount of magnesium chloride melt added into each intermediate tank is approximately equal.
The invention combines the advantages of the magnesium electrolysis production line technology and the magnesium electrolysis multi-electrode cell technology, removes the disadvantages of the magnesium electrolysis production line technology and the magnesium electrolysis multi-electrode cell technology, reduces the number of magnesium electrolysis cells under the condition of the same magnesium productivity, and reduces the magnesium chloride charging frequency and the magnesium discharging frequency of the magnesium electrolysis production line.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a magnesium electrolysis bipolar tank assembly line of the present invention.
In the figure: 1-head tank, 2-bipolar refining electrolytic tank, 3-bipolar production line electrolytic tank, 4-middle tank, 5-chute, 6-tail tank, 7-high temperature melt pump, 8-melt pipeline, 9-melt channel and 10-bypass chute.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the embodiment of the invention discloses a magnesium electrolysis bipolar tank flow line which comprises a head tank 1, a bipolar refining electrolytic tank 2, a bipolar flow line electrolytic tank 3, a middle tank 4 and a tail tank 6, wherein the tanks are connected through a chute 5 and are connected in series to form a magnesium electrolysis flow line, the head tank is positioned at the foremost end of the flow line, the tail tank is positioned at the tail end of the flow line, a plurality of groups of bipolar refining electrolytic tanks and bipolar flow line electrolytic tanks are arranged between the head tank and the tail tank, the middle tank is arranged behind the bipolar refining electrolytic tanks and the bipolar flow line electrolytic tanks, the head tank is used for adding fused magnesium chloride and other electrolyte components, the bipolar refining electrolytic tanks are used for refining electrolyte and electrolyzing magnesium chloride, the bipolar flow line electrolytic tanks are used for electrolyzing magnesium chloride, the middle tank is used for supplementing and collecting magnesium, discharging magnesium and magnesium chloride melt, the tail tank is used for collecting magnesium and discharging magnesium, and the chute is used for circulating the electrolyte melt.
Except the joint of the head groove and the tail groove, a bypass chute 10 is arranged on the chute connected with each groove and used for assisting the circulation of electrolyte melt under the preset condition, in particular to a bypass chute operated when a bipolar refining electrolytic tank, a bipolar assembly line electrolytic tank, a middle groove and a chute break down and are overhauled.
The head tank is divided into two chambers, wherein one chamber is a feeding chamber and used for adding raw materials, the other chamber is a refining chamber, a group of graphite electrodes with the total direct current intensity of 15-20 kA are respectively arranged in the two chambers, 1-2 groups of alternating current heating electrodes are respectively arranged at the bottoms of the two chambers of the head tank, a slag outlet is formed in the refining chamber, and an outlet of the refining chamber is connected with a downstream bipolar refining electrolytic tank.
1-2 bipolar refining electrolytic tanks are arranged behind the head tank, electrolytic chambers are arranged at two sides of each bipolar refining electrolytic tank, a magnesium collecting chamber is arranged in the middle of each bipolar refining electrolytic tank, two ends of each magnesium collecting chamber of each electrolytic tank are connected with a chute, a graphite electrode is inserted into each bipolar refining electrolytic tank from a bipolar refining electrolytic tank cover, and a slag discharging cover plate is arranged in each magnesium collecting chamber.
The bipolar assembly line electrolytic cell is arranged behind the bipolar refining electrolytic cell, the number of the bipolar assembly line electrolytic cell is 3-6, the two sides of the bipolar assembly line electrolytic cell are electrolytic chambers, the middle of the bipolar assembly line electrolytic cell is a magnesium collecting chamber, graphite electrodes are inserted into the bipolar assembly line electrolytic cell from the bottom of the side face of the bipolar assembly line electrolytic cell, the magnesium collecting chamber is provided with a slag discharging cover plate, and the number of the bipolar assembly line electrolytic cells arranged in the whole magnesium electrolysis assembly line is 20-30.
When the number of the bipolar refining electrolytic cell and the bipolar assembly line electrolytic cell reaches 5-8, an intermediate cell is arranged behind the bipolar assembly line electrolytic cell at the tail end, the intermediate cells are symmetrically arranged at two sides of the whole assembly line, an intermediate cell is arranged at the middle section of the assembly line, 2 groups of alternating current heating electrodes are arranged at the bottom of the intermediate cell, and a slag outlet is arranged in the intermediate cell.
1 bipolar refining electrolytic cell and 4-7 bipolar assembly line electrolytic cells are arranged behind the first middle cell in sequence, and the electrolytic cells on the two sides of the magnesium electrolysis assembly line are equal in number and are symmetrically arranged.
Connect by high temperature melt pump 7, fuse-element pipeline 8 and fuse-element passageway 9 between tail groove and the first groove, the tail groove divide into two rooms, and one room is for collecting the magnesium room for collect magnesium and go out magnesium, two rooms are the circulation room, the high temperature melt pump sets up in two rooms the two room bottoms of tail groove all set up 1 ~ 2 and exchange the heating electrode, two rooms of tail groove all set up the slag notch, the electrolyte in two rooms of tail groove flows again after the fuse-element passageway gets into one room of first groove by high temperature melt pump carries the fuse-element pipeline.
Two graphite electrode sheets are arranged between the graphite electrode plate and the steel cathode plate of the bipolar refining electrolytic cell and the bipolar assembly line electrolytic cell, and the graphite electrode sheets are not connected with a power supply; the direct current intensity of the magnesium electrolysis production line for electrolysis is set to be 180-260 kA, the temperature of the electrolyte in the first electrolytic tank during operation is controlled to be 670-720 ℃, and the temperatures of the electrolyte in the bipolar refining electrolytic tank, the bipolar production line electrolytic tank and the intermediate tank can not be completely consistent, but all need to be controlled to be 670-685 ℃.
The magnesium chloride melt added into the first groove accounts for 50-60% of the total magnesium chloride melt adding amount of the assembly line when the magnesium electrolysis assembly line operates, the total magnesium chloride melt added into each intermediate groove accounts for 40-50% of the total magnesium chloride melt adding amount of the assembly line, and the magnesium chloride melt adding into each intermediate groove is approximately equal in amount.
Example 1
In this example, 2 bipolar refining electrolyzers were installed after the first one, 6 bipolar line electrolyzers were installed after 2 bipolar refining electrolyzers, 1 intermediate tank was installed after that, 1 bipolar refining electrolyzer, 7 bipolar line electrolyzers were installed after that, 1 intermediate tank was installed at the intermediate position of the whole line, and then 1 bipolar refining electrolyzer, 7 bipolar line electrolyzers, 1 intermediate tank, 1 bipolar refining electrolyzer, 7 bipolar line electrolyzers, and finally 1 tail tank were installed in this order on the other side of the 16 lines.
When the magnesium electrolysis bipolar cell assembly line runs, the magnesium chloride melt amount added into the head cell accounts for 50% of the total magnesium chloride melt amount of the assembly line, and the magnesium chloride melt amount added into the 3 middle cells respectively accounts for 16-17% of the total magnesium chloride melt amount of the assembly line. Compared with a magnesium electrolysis production line with 28 electrolysis cells, the yield of the electrolytic magnesium is increased by 70 percent; compared with 28 magnesium electrolytic bipolar tanks which are operated independently, the frequency of adding magnesium chloride is reduced by 30 percent, and the frequency of magnesium output is reduced by 50 percent.
Example 2
In this embodiment, 2 bipolar refining electrolyzers are arranged behind the first electrolytic cell, 4 bipolar line electrolyzers are arranged behind the 2 bipolar refining electrolyzers, 1 intermediate electrolytic cell is arranged behind the 2 bipolar refining electrolyzers, 1 bipolar refining electrolyzer and 5 bipolar line electrolyzers are arranged behind the 2 bipolar refining electrolyzers, 1 intermediate electrolytic cell is arranged in the middle of the whole production line, and then 1 bipolar refining electrolyzer, 5 bipolar line electrolyzers, 1 intermediate electrolytic cell, 1 bipolar refining electrolyzer, 5 bipolar line electrolyzers and 1 tail electrolytic cell are arranged on the other side of the production line of the 12 electrolyzers in sequence.
When the magnesium electrolysis bipolar cell assembly line runs, the magnesium chloride melt amount added in the head cell accounts for 60 percent of the total magnesium chloride melt addition amount of the assembly line, and the magnesium chloride melt amount added in the 3 middle cells respectively accounts for 13 to 14 percent of the total magnesium chloride melt addition amount of the assembly line. Compared with a magnesium electrolysis production line with 24 electrolytic cells, the yield of the electrolytic magnesium is increased by 80 percent; compared with 24 magnesium electrolytic bipolar tanks which are operated independently, the frequency of adding magnesium chloride is reduced by 25 percent, and the frequency of magnesium output is reduced by 50 percent.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a magnesium electrolysis bipolar groove assembly line, its characterized in that includes head groove, bipolar refining electrolysis trough, bipolar assembly line electrolysis trough, intermediate tank and tail groove, links to each other through the chute between each groove, constitutes a magnesium electrolysis assembly line after establishing ties, head groove is located the assembly line foremost end, the tail groove is located the assembly line end, sets up a plurality of groups bipolar refining electrolysis trough, bipolar assembly line electrolysis trough between the two, sets up behind bipolar refining electrolysis trough, the bipolar assembly line electrolysis trough of default quantity the intermediate tank, head groove is used for adding fused mass magnesium chloride and other components of electrolyte, bipolar refining electrolysis trough is used for refining electrolyte and electrolytic magnesium chloride, bipolar assembly line electrolysis trough is used for electrolytic magnesium chloride, intermediate tank is used for collecting magnesium, goes out magnesium and replenishes the magnesium chloride fuse-element, the tail groove is used for collecting magnesium and goes out magnesium, the chute is used for the circulation of electrolyte fuse-element.
2. A magnesium electrolysis bipolar tank assembly line as claimed in claim 1, wherein a bypass chute is provided on the chute connected to each tank except for the junction of the head tank and the tail tank, the bypass chute being adapted to flow as an auxiliary electrolyte melt under predetermined conditions.
3. The magnesium electrolysis bipolar tank flow line according to claim 1, wherein the head tank is divided into two chambers, one chamber is a feeding chamber for adding raw materials, the other chamber is a refining chamber, the two chambers are respectively provided with a group of graphite electrodes with the total direct current intensity of 15-20 kA, the bottoms of the two chambers of the head tank are respectively provided with 1-2 groups of alternating current heating electrodes, and the refining chamber is provided with a slag outlet.
4. The magnesium electrolysis bipolar cell flow line according to claim 1, wherein 1-2 bipolar refining electrolytic cells are arranged behind the head cell, the bipolar refining electrolytic cells are provided with electrolytic chambers at two sides and a magnesium collecting chamber in the middle, graphite electrodes are inserted into the bipolar refining electrolytic cells from bipolar refining electrolytic cell covers, and the magnesium collecting chamber is provided with a slag discharging cover plate.
5. The magnesium electrolysis bipolar tank flow line according to claim 4, wherein the bipolar flow line electrolytic tank is arranged behind the bipolar refining electrolytic tank, the number of the bipolar flow line electrolytic tank is 3-6, the two sides of the bipolar flow line electrolytic tank are provided with electrolytic chambers, the middle part of the bipolar flow line electrolytic tank is provided with a magnesium collecting chamber, graphite electrodes are inserted into the bipolar flow line electrolytic tank from the bottom of the side surface of the bipolar flow line electrolytic tank, the magnesium collecting chamber is provided with a slag discharging cover plate, and the number of the bipolar flow line electrolytic tank arranged in the whole magnesium electrolysis flow line is 20-30.
6. A magnesium electrolysis bipolar tank flow line according to any one of claims 1 to 5, wherein when the number of bipolar refining and bipolar line cells reaches 5 to 8, an intermediate tank is provided behind the last bipolar line cell, the intermediate tanks are symmetrically provided on both sides of the flow line, an intermediate tank is provided in the middle of the flow line, 2 sets of alternating current heating electrodes are provided at the bottom of the intermediate tank, and the intermediate tank is provided with a slag outlet.
7. A magnesium electrolysis bipolar tank flow line according to claim 6, wherein 1 bipolar refining electrolyzer and 4-7 bipolar line electrolyzers are arranged in sequence after the first intermediate tank, and the number of electrolyzers on both sides of the magnesium electrolysis flow line is equal and symmetrically arranged.
8. The magnesium electrolysis bipolar tank assembly line according to claim 1, wherein the tail tank is connected with the head tank through a high temperature melt pump, a melt pipeline and a melt channel, the tail tank is divided into two chambers, one chamber is a magnesium collecting chamber for collecting magnesium and discharging magnesium, the other chamber is a circulating chamber, the high temperature melt pump is arranged in the two chambers, 1-2 groups of alternating current heating electrodes are arranged at the bottoms of the two chambers of the tail tank, the two chambers of the tail tank are provided with slag outlets, and electrolyte in the two chambers of the tail tank flows into the one chamber of the head tank through the melt channel after being conveyed to the melt pipeline by the high temperature melt pump.
9. The magnesium electrolysis bipolar tank assembly line according to claims 3 to 5, wherein two graphite electrode sheets are arranged between the graphite electrode plate and the steel cathode plate of the bipolar refining electrolytic tank and the bipolar assembly line electrolytic tank, and the graphite electrode sheets are not connected with a power supply; the direct current intensity of the magnesium electrolysis production line for electrolysis is set to be 180-260 kA, the temperature of the electrolyte in the first electrolytic tank is controlled to be 670-720 ℃ during operation, and the temperatures of the electrolyte in the bipolar refining electrolytic tank, the bipolar production line electrolytic tank and the intermediate tank are controlled to be 670-685 ℃.
10. The magnesium electrolysis bipolar tank flow line according to claim 1, wherein the magnesium electrolysis flow line is operated, the amount of magnesium chloride melt added in the head tank accounts for 50-60% of the total amount of magnesium chloride melt added in the flow line, the total amount of magnesium chloride melt added in each intermediate tank accounts for 40-50% of the total amount of magnesium chloride melt added in the flow line, and the amount of magnesium chloride melt added in each intermediate tank is approximately equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112130.5A CN115652367A (en) | 2022-09-13 | 2022-09-13 | Magnesium electrolysis bipolar tank assembly line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112130.5A CN115652367A (en) | 2022-09-13 | 2022-09-13 | Magnesium electrolysis bipolar tank assembly line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115652367A true CN115652367A (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211112130.5A Pending CN115652367A (en) | 2022-09-13 | 2022-09-13 | Magnesium electrolysis bipolar tank assembly line |
Country Status (1)
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|---|---|
| CN (1) | CN115652367A (en) |
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- 2022-09-13 CN CN202211112130.5A patent/CN115652367A/en active Pending
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