CN116875816A - High-purity aluminum production system - Google Patents
High-purity aluminum production system Download PDFInfo
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- CN116875816A CN116875816A CN202310704472.4A CN202310704472A CN116875816A CN 116875816 A CN116875816 A CN 116875816A CN 202310704472 A CN202310704472 A CN 202310704472A CN 116875816 A CN116875816 A CN 116875816A
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 302
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 300
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 245
- 230000007246 mechanism Effects 0.000 claims abstract description 123
- 238000001514 detection method Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 32
- 230000000149 penetrating effect Effects 0.000 claims abstract description 31
- 230000008569 process Effects 0.000 claims abstract description 30
- 238000007670 refining Methods 0.000 claims abstract description 28
- 239000000523 sample Substances 0.000 claims description 106
- 230000001276 controlling effect Effects 0.000 claims description 29
- 238000005259 measurement Methods 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 206010070834 Sensitisation Diseases 0.000 claims description 9
- 230000008313 sensitization Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 230000035515 penetration Effects 0.000 claims description 7
- 238000009530 blood pressure measurement Methods 0.000 claims description 6
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 description 20
- 230000005540 biological transmission Effects 0.000 description 14
- 239000004411 aluminium Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 7
- 238000009529 body temperature measurement Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
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- 230000001681 protective effect Effects 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
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- 238000003860 storage Methods 0.000 description 5
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- 238000004364 calculation method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
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- 238000005868 electrolysis reaction Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
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- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- -1 aluminum ions Chemical class 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
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- 238000012544 monitoring process Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a high-purity aluminum production system, which comprises a refined aluminum tank and control equipment, wherein the control equipment comprises a control unit and a three-layer liquid depth measuring device, the control equipment is also used for controlling the three-layer liquid depth measuring device to measure respective depths of three layers of liquid in the refined aluminum tank in the refining process, and the three-layer liquid depth measuring device is arranged above the refined aluminum tank and comprises a detection mechanism and a camera shooting mechanism; the control unit is electrically connected with the detection mechanism and is used for controlling the detection mechanism to detect into the refined aluminum tank and abut against the tank bottom of the refined aluminum tank, and then the detection mechanism is completely moved out of the refined aluminum tank, so that the detection mechanism is attached to the adhesion objects in the three-layer liquid; after the penetrating mechanism moves out of the refined aluminum tank, the control unit controls the image pickup mechanism to pick up images of the penetrating mechanism, so that respective depths of three layers of liquid in the refined aluminum tank are obtained through the images. The high-purity aluminum production system can measure the depth of three layers of liquid on line, improve the production efficiency, reduce the energy consumption and ensure the product quality.
Description
Technical Field
The invention belongs to the technical field of refined aluminum, and particularly relates to a high-purity aluminum production system.
Background
At present, a three-layer liquid refined aluminum electrolysis method is a main method for preparing high-purity aluminum (or called refined aluminum), three layers of liquid are arranged in a refined aluminum tank during electrolysis, the bottom layer is an anode and an anode conductor, the anode conductor consists of raw aluminum to be refined and a weighting agent Cu, the middle layer is electrolyte, the density is between an anode alloy and aluminum, and the upper layer is high-purity aluminum and a cathode obtained through refining. The refined aluminum tank body is provided with a raw material inlet for adding raw materials to the bottom layer, an electrolyte inlet communicated with the middle layer and a pure aluminum outlet communicated with the upper layer.
When high purity aluminum is produced by an electrolytic method, the timing of adding raw aluminum and the timing of discharging refined aluminum need to be strictly controlled. That is, when the amount of the raw material is small, the raw material of the aluminum ingot needs to be replenished, and when the amount of finished aluminum is excessive, aluminum is required to be discharged. In addition, when the electrolyte is small, the electrolyte needs to be replenished. At present, the three-layer liquid electrolysis process generally adopts a mode that after a period of operation, the whole power is cut off to measure the depth of each layer so as to determine whether original aluminum and electrolyte are required to be added or whether aluminum is required to be discharged, the power cut off not only affects the production efficiency, but also needs to be heated for restarting, and the energy consumption is increased.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a high-purity aluminum production system which can measure the depth of three layers of liquid on line,
the production efficiency is improved, the energy consumption is reduced, and the product quality is ensured.
The invention provides a high-purity aluminum production system, which comprises a refined aluminum tank and control equipment, wherein three layers of liquid are contained in the refined aluminum tank, the control equipment is used for controlling the refined aluminum tank to execute a refining process, the control equipment comprises a control unit and three layers of liquid depth measuring devices, the control equipment is also used for controlling the three layers of liquid depth measuring devices to measure respective depths of three layers of liquid in the refined aluminum tank in the refining process, and the three layers of liquid depth measuring devices are arranged above the refined aluminum tank and comprise a detection mechanism and a camera mechanism; the control unit is electrically connected with the detection mechanism and is used for controlling the detection mechanism to detect into the refined aluminum tank and abut against the tank bottom of the refined aluminum tank, and then the detection mechanism is completely moved out of the refined aluminum tank, so that the detection mechanism is attached to the adhesion objects in the three-layer liquid; the control unit is also electrically connected with the image pickup mechanism and is used for controlling the image pickup mechanism to pick up images of the detection mechanism after the detection mechanism moves out of the refined aluminum tank, so that respective depths of three layers of liquid in the refined aluminum tank are obtained through the images.
Preferably, the detecting mechanism is provided with a first position sensor for sensing the position of the detecting mechanism, the control unit comprises a timing module, the first position sensor sends a sounding signal to the control unit when sensing that the detecting mechanism is positioned at a position abutting against the bottom of the refined aluminum groove, the control unit enables the timing module to start timing after receiving the sounding signal, the control unit controls the detecting mechanism to completely move out of the refined aluminum groove after the timing module timing reaches a first set time, the first position sensor sends a shooting signal to the control unit when sensing that the detecting mechanism is positioned at a position completely moving out of the refined aluminum groove, and the control unit controls the camera shooting mechanism to shoot images of the detecting mechanism after receiving the shooting signal.
Preferably, the penetrating mechanism comprises a penetrating driving piece and an insulating rod, wherein the penetrating driving piece is electrically connected with the control unit and used for driving the insulating rod to descend into the refined aluminum groove and ascend out of the refined aluminum groove under the control of the control unit.
Preferably, the three-layer liquid depth measuring device further comprises a sensitization screen, the sensitization screen is arranged above the refined aluminum groove, the control unit controls the penetration driving piece to drive the insulating rod to ascend and move out of the refined aluminum groove, the lower portion, adhered with an adhesion object, of the insulating rod corresponds to the position of the sensitization screen, the image pick-up mechanism and the sensitization screen are respectively arranged on two sides of the insulating rod at the moment, and the sensitization screen is used for improving the contrast ratio of an image shot by the image pick-up mechanism when the lower portion of the insulating rod is shot by the image pick-up mechanism.
Preferably, the control equipment further comprises a temperature measuring device and a temperature adjusting device, and the control equipment is further used for controlling the temperature measuring device to sense the current temperature of each of the three layers of liquid in the refined aluminum tank in the refining process; and the temperature regulating device is used for controlling the temperature regulating device to regulate the temperature of the three-layer liquid in the refined aluminum tank in the refining process; the control unit is also electrically connected with the temperature measuring device and the temperature regulating device and is used for obtaining the temperature difference of the three-layer liquid according to the set temperature of the three-layer liquid and the current temperature of the three-layer liquid, obtaining the temperature regulating quantity required by the three-layer liquid according to the temperature difference of the three-layer liquid and the depth of the three-layer liquid, and controlling the output of the temperature regulating device according to the temperature regulating quantity required by the three-layer liquid.
Preferably, the temperature measuring device is movably connected above the refined aluminum tank along the vertical direction, and the control unit is used for driving the detection end of the temperature measuring device to descend into the refined aluminum tank, so that the respective current temperatures of three layers of liquid in the refined aluminum tank are obtained.
Preferably, the control device further comprises a cathode height control device, the cathode height control device comprises a cathode lifting driving piece and a cathode rod, the bottom end of the cathode rod is immersed in the upper layer liquid in the refined aluminum tank, the control unit comprises an acquisition module, the acquisition module is used for acquiring the real-time depth of the cathode rod immersed in the upper layer liquid in the refined aluminum tank when the aluminum adding step/the aluminum discharging step is completed every second set time/each third time is completed, the control unit is further electrically connected with the cathode lifting driving piece and used for judging whether the real-time depth of the cathode rod immersed in the upper layer liquid is in a set range or not, and if the real-time depth of the cathode rod immersed in the upper layer liquid is not in the set range, the cathode lifting driving piece is controlled to drive the cathode rod to lift so as to adjust the current height of the cathode rod until the real-time depth of the cathode rod immersed in the upper layer liquid is in the set range.
Preferably, the control unit further comprises a timing module, the control unit is further used for receiving a detection trigger signal triggered by the refined aluminum tank after aluminum adding/discharging operation is performed, and sending a control instruction to the acquisition module when the detection trigger signal is received/when the timing module counts the second set time, so as to drive the acquisition module to acquire the real-time depth of the cathode rod immersed in the upper layer liquid in the refined aluminum tank.
Preferably, the control device further comprises a polar hydraulic pressure drop measuring device for obtaining polar hydraulic pressure drop between upper layer liquid and lower layer liquid in the refined aluminum tank in the refining process, the polar hydraulic pressure drop measuring device comprises a cathode probe, an anode probe and an anode probe driving piece, wherein the cathode probe is electrically connected with a cathode rod so as to be electrically connected with the upper layer liquid in the refined aluminum tank through the cathode rod, the anode probe driving piece is connected with the anode probe and used for driving the anode probe to lift so that the anode probe contacts with the lower layer liquid in the refined aluminum tank, and the control unit is further electrically connected with the cathode probe and the anode probe respectively and used for obtaining polar hydraulic pressure drop between the upper layer liquid and the lower layer liquid in the refined aluminum tank when the anode probe contacts with the lower layer liquid in the refined aluminum tank.
Preferably, the anode probe is provided with a second position sensor for sensing the position of the anode probe, the second position sensor sends a pressure measurement signal to the control unit when sensing that the anode probe is positioned at a position contacting with the lower liquid in the refined aluminum tank, the control unit determines the pole liquid pressure drop between the upper liquid and the lower liquid in the refined aluminum tank after receiving the pressure measurement signal, the control unit controls the anode probe driving piece to drive the anode probe to rise after the determination is completed, and the second position sensor sends a reset signal to the control unit when sensing that the anode probe is positioned at a reset position, and the control unit controls the anode probe driving piece to stop driving.
Preferably, the refined aluminum tank comprises a tank body, a cover door and an opening and closing driving piece, wherein the three-layer liquid is accommodated in the tank body, a charging hole is formed in the upper portion of the tank body and used for feeding raw aluminum into the tank body, the driving end of the opening and closing driving piece is connected with the cover door, and the control unit is electrically connected with the opening and closing driving piece and used for controlling the opening and closing driving piece to drive the cover door to close the charging hole and open the charging hole.
Preferably, the control device further comprises a transportation unit, the control unit is electrically connected with the transportation unit and is used for comparing the actual depth of the lower liquid with the set depth of the lower liquid after the respective depths of three layers of liquid in the refined aluminum tank are obtained through the three-layer liquid depth measuring device, and when the depth of the lower liquid is lower than the set depth, the control unit is used for controlling the transportation unit to transport raw aluminum to the charging port, a position sensor is arranged on the transportation unit, the charging port is provided with a sensing point, the position sensor sends an aluminum adding signal to the control unit when sensing the sensing point, the control unit sends a first control signal after receiving the aluminum adding signal so as to control the opening and closing driving piece to drive the cover door to open the charging port, and the control unit further comprises a timing module and is used for starting timing when sending the first control signal and sending a second control signal so as to control the opening and closing driving piece to drive the cover door to close the charging port after the timing duration reaches the charging duration.
The invention provides a high-purity aluminum production system, wherein a refined aluminum tank 1 is internally provided with three layers of liquid, a control device is used for controlling the refined aluminum tank 1 to execute a refining process, in the refining process, the three layers of liquid depth in the refined aluminum tank is automatically measured on line through a three-layer liquid depth measuring device, wherein a control unit enables a penetrating mechanism to penetrate into the refined aluminum tank and abut against the tank bottom of the refined aluminum tank, and then the penetrating mechanism is completely moved out of the refined aluminum tank, namely, the penetrating mechanism is enabled to be in direct contact with the bottom of the refined aluminum tank longitudinally, the practice shows that the three layers of liquid are different in adhesion respectively, the penetrating mechanism is divided into three layers with different colors, specifically, the upper layer of liquid adhesion is formed by solidifying the upper layer of liquid (refined aluminum) in the refined aluminum tank, the middle layer of liquid adhesion is formed by solidifying a small amount of the electrolyte in the refined aluminum tank (a small amount of difference of pure aluminum on the electrolyte), and the lower layer of liquid adhesion of the three layers of liquid adhesion of the electrolyte in the refined aluminum tank is formed by solidifying the lower layer of the electrolyte (original aluminum and weighting agent) in a small amount of the electrolyte, and the three layers of adhesion of the three layers of the adhesion of the liquid adhesion of the three layers of the liquid in the refined aluminum tank can be displayed in a depth corresponding to the depth of the penetrating mechanism in the refined aluminum tank.
And then, by utilizing the fact that the colors of the adherends are different, the control unit also controls the image pickup mechanism to pick up images of the penetrating mechanism after the images are moved out of the refined aluminum tank, so that the respective depths of three layers of liquid in the refined aluminum tank, namely the depths of upper layer liquid, middle layer liquid and lower layer liquid in the refined aluminum tank, are obtained through the images, and an operator can master the refining process in the refined aluminum tank at any time according to the depths of all layers to judge whether raw aluminum and electrolyte are required to be added or whether aluminum is required to be discharged. The system realizes the measurement of the depth of the upper layer liquid, the middle layer liquid and the lower layer liquid in the refined aluminum tank on the premise of no power failure, and compared with the power failure measurement condition, the system greatly improves the working efficiency, reduces the energy consumption and improves the reliability and the accuracy of the measurement.
Drawings
FIG. 1 is a schematic diagram of a high purity aluminum production system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a three-layer liquid depth measuring device in a high purity aluminum production system according to an embodiment of the present invention;
FIG. 3 is a schematic view of the installation position of a three-layer liquid depth measuring device in a high purity aluminum production system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a temperature measuring device in a high purity aluminum production system according to an embodiment of the present invention;
FIG. 5 is a schematic view of the installation position of a temperature measuring device in a high purity aluminum production system according to an embodiment of the present invention;
FIG. 6 is a schematic view of the cathode elevation control apparatus in the high purity aluminum production system according to the embodiment of the present invention;
FIG. 7 is a schematic view of the structure of the device for measuring the drop of the extreme hydraulic pressure in the high purity aluminum production system according to the embodiment of the present invention;
FIG. 8 is a schematic view of the installation position of the polar hydraulic drop measuring device in the high purity aluminum production system according to the embodiment of the present invention;
FIG. 9 is a schematic view showing the installation structure of a door in a high purity aluminum production system according to an embodiment of the present invention;
fig. 10 is a schematic view showing the bottom structure of a cover door in a high purity aluminum production system according to an embodiment of the present invention.
In the figure: 1. a refined aluminum groove; 11. a tank body; 111. a feed inlet; 112. an annular protrusion; 12. a cover door; 121. a groove; 13. an opening and closing driving member; 131. a pushing member; 132. a telescopic rod; 133. an ear stem; 14. a trough rack; 15. a connecting rod;
2. Three-layer liquid depth measuring device; 21. a penetration mechanism; 211. a driving member is inserted;
2111. a servo motor; 2112. a screw; 2113. a nut seat; 212. an insulating rod; 2121. a slot box; 213. a vertical plate; 214. a first plate; 215. a second plate; 216. a sliding shaft; 22. an image pickup mechanism; 23. a intensifying screen;
3. a temperature measuring device; 31. a temperature measuring mechanism; 32. a temperature measurement driving member; 321. a motor;
322. a screw rod; 323. a connecting block; 324. a guide rod; 325. a mounting plate; 326. a first ear plate; 327. a second ear plate;
4. cathode height control device; 41. a cathode lifting driving member; 411. a lifting motor;
412. a transmission mechanism; 4121. a lifting assembly; 4122. a bus bar clamp; 4123. a lifting shaft; 4124. a transmission shaft; 413. a bus; 42. a cathode rod; 43. a laser measurement member; 44. a cross beam;
5. a polar hydraulic drop measuring device; 51. a cathode probe; 52. an anode probe; 53. an anode probe driving member; 531. a driving motor; 532. a mounting member; 533. a screw rod; 534. a connecting sheet; 535. a guide rod; 536. lifting rod.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent, and the embodiments described in detail, but not necessarily all, in connection with the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that, the terms "upper," "lower," and the like indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, and are merely for convenience and simplicity of description, and do not indicate or imply that the apparatus or element in question must be provided with a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "configured," "mounted," "secured," and the like are to be construed broadly and may be either fixedly connected or detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Examples
As shown in fig. 1, the high-purity aluminum production system of the embodiment comprises a refined aluminum tank 1 and a control device, wherein three layers of liquid are contained in the refined aluminum tank 1, the control device is used for controlling the refined aluminum tank 1 to execute a refining process, the control device comprises a control unit and a three-layer liquid depth measuring device 2, and the control device is also used for controlling the three-layer liquid depth measuring device 2 to measure respective depths of three layers of liquid in the refined aluminum tank 1 in the refining process.
As shown in fig. 2 and 3, the three-layer liquid depth measuring device 2 is arranged above the refined aluminum tank 1 and comprises a penetrating mechanism 21 and an image pickup mechanism 22; the control unit is electrically connected with the penetrating mechanism 21 and is used for controlling the penetrating mechanism 21 to penetrate into the refined aluminum tank 1 and abut against the tank bottom of the refined aluminum tank 1, and then the penetrating mechanism 21 is completely moved out of the refined aluminum tank 1, so that the penetrating mechanism 21 is adhered with the adhesion matters in the three layers of liquid; the control unit is also electrically connected with the image pickup mechanism 22 and is used for controlling the image pickup mechanism 22 to pick up images of the detection mechanism 21 after the detection mechanism 21 moves out of the refined aluminum tank 1, so that respective depths of three layers of liquid in the refined aluminum tank 1 are obtained through the images.
The high-purity aluminum production system automatically and online measures the depth of three layers of liquid in the refined aluminum tank 1 through the three-layer liquid depth measuring device 2. Practice shows that the three layers of liquid are different in adhesion substances, and the three layers of liquid are separated into three layers with different colors on the penetrating mechanism 21, specifically, the upper layer of liquid adhesion substances, namely the upper layer of liquid (refined aluminum) in the refined aluminum tank 1 is solidified and formed, the middle layer of liquid adhesion substances are solidified and formed by adding a small amount of upper layer of liquid (the adhesion of pure aluminum on the electrolyte) to electrolyte in the refined aluminum tank 1, and the lower layer of liquid adhesion substances are solidified and formed by adding a small amount of upper layer of liquid to electrolyte to lower layer of liquid (raw aluminum and weighting agent) in the refined aluminum tank 1, and the sections of the three layers of liquid adhesion substances adhered on the penetrating mechanism 21 are in one-to-one correspondence with the depths of the three layers of liquid in the refined aluminum tank 1, so that the penetrating mechanism 21 can display the depths of the three layers.
Then, by utilizing the fact that the colors represented by the adherends are different, the control unit also controls the image pickup mechanism 22 to pick up the image of the penetrating mechanism 21 after the image is moved out of the refined aluminum tank 1, so that the respective depths of three layers of liquid in the refined aluminum tank 1, namely the depths of the upper layer liquid, the middle layer liquid and the lower layer liquid in the refined aluminum tank 1, are obtained through the image, so that an operator can grasp the refining process in the refined aluminum tank 1 at any time according to the depths of all layers, and whether raw aluminum and electrolyte are needed to be added or whether aluminum is needed to be discharged is judged. The system realizes the measurement of the depth of the upper layer liquid, the middle layer liquid and the lower layer liquid in the refined aluminum tank 1 on the premise of no power failure, and compared with the power failure measurement condition, the system greatly improves the working efficiency, reduces the energy consumption and improves the reliability and the accuracy of the measurement.
In this embodiment, the detection mechanism 21 is provided with a first position sensor for sensing the position of the detection mechanism 21, the control unit includes a timing module, the first position sensor sends a sounding signal to the control unit when sensing that the detection mechanism 21 is at a position abutting against the bottom of the refined aluminum tank 1, the control unit starts timing after receiving the sounding signal, the control unit controls the detection mechanism 21 to completely move out of the refined aluminum tank 1 after the timing module reaches a first set time, the first position sensor sends a shooting signal to the control unit when sensing that the detection mechanism 21 is at a position completely moving out of the refined aluminum tank 1, and the control unit controls the camera mechanism 22 to shoot an image of the detection mechanism 21 after receiving the shooting signal. The first setting time is set according to the working conditions, so that the adhered matter of the three layers of liquid can be fully adhered to the probing mechanism 21.
In this embodiment, the penetrating mechanism 21 includes a penetrating driving member 211 and an insulating rod 212, where the penetrating driving member 211 is electrically connected to the control unit, and is used to drive the insulating rod 212 to descend into the refined aluminum tank 1 and ascend out of the refined aluminum tank 1 under the control of the control unit. In this embodiment, a tank frame 14 is disposed above the tank body 11 of the refined aluminum tank 1, a driving member 211 is installed on the tank frame 14, the driving end of the driving member is connected with an insulating rod 212, the insulating rod 212 is made of SiC, and the insertion of the insulating rod 212 made of SiC into the refined aluminum three-layer solution does not affect the electrolytic aluminum process, and does not pollute the three-layer solution. In this embodiment, the insulating rod 212 is inserted into the refined aluminum tank 1 through the feed port 111.
In this embodiment, the three-layer liquid depth measuring device 2 further includes a intensifying screen 23, the intensifying screen 23 is disposed above the refined aluminum tank 1, the control unit controls the penetration driving member 211 to drive the insulating rod 212 to ascend and move out of the refined aluminum tank 1, and makes the lower portion of the insulating rod 212 with the adhesive substance adhered thereon correspond to the position of the intensifying screen 23, at this time, the image capturing mechanism 22 and the intensifying screen 23 are respectively disposed on two sides of the insulating rod 212, the setting position of the image capturing mechanism 22 is as shown in the figure, and can be mounted on a support frame provided separately, and the intensifying screen 23 is used for improving the contrast of the image captured by the image capturing mechanism 22 when capturing the lower portion of the insulating rod 212.
In this embodiment, the intensifying screen 23 is a black body serving as a background plate, and the insulating rod 212 taken out of the refined aluminum tank 1 is moved to be positioned in front of the black body at the time of photographing, so that the contrast of each layer in the image can be improved. In other embodiments, other sensitization devices that can improve contrast can be selected to achieve this.
In this embodiment, in order to make the penetrating mechanism 21 perform depth measurement multiple times, it is necessary to perform appropriate cleaning on the insulating rod 212, so the system is further provided with an annular cleaning brush on the slot frame 14, and the control unit is further configured to control the penetrating driving member 211 to drive the insulating rod 212 to move upward until the lower portion of the insulating rod 212 passes through the cleaning brush after the photographing mechanism 22 photographs the lower portion of the insulating rod 212, so that the cleaning brush can remove the adhesive material adhered to the lower portion of the insulating rod 212, and the cleaning brush can be located above the intensifying screen 23, so as to avoid that the insulating rod 212 passes through the cleaning brush before photographing, thereby causing the adhesive material to be separated.
In this embodiment, the driving member 211 is mounted on the frame 14 through a fixing base. The fixing seat comprises a vertical plate 213 and a first flat plate 214, the vertical plate 213 is fixed on the inner side surface of the groove frame 14, the first flat plate 214 is fixed at the upper end of the vertical plate 213, the penetrating driving piece 211 comprises a servo motor 2111, a screw 2112 and a nut seat 2113, the servo motor 2111 is fixed on the first flat plate 214 and is in transmission connection with the screw 2112 for driving the screw 2112 to rotate, the screw 2112 penetrates through the first flat plate 214 and is in rotation connection with the first flat plate 214, the nut seat 2113 is in threaded connection with the screw 2112, and the upper portion of the insulating rod 212 is fixedly connected with the nut seat 2113.
Specifically, the upper portion of the insulator rod 212 is mounted in a groove box 2121 having grooves, and the upper portion of the insulator rod 212 is fixedly attached to the nut seat 2113 through the groove box 2121. In other embodiments, the penetrating driving member 211 may be a driving cylinder or other driving structure capable of driving the insulating rod 212 to move linearly.
In this embodiment, to ensure smooth linear movement of the nut seat 2113, the fixing base further includes a second flat plate 215 and two sliding shafts 216, the second flat plate 215 is fixed at the lower end of the vertical plate 213, the two sliding shafts 216 are separately disposed at two sides of the screw 2112, the sliding shafts 216 are connected between the first flat plate 214 and the second flat plate 215, and two ends of the nut seat 2113 in the horizontal direction are slidably connected with the corresponding sliding shafts 216.
In this embodiment, the control unit further includes an identification module and a measurement module, and the control unit obtains depths of the upper layer liquid, the middle layer liquid and the lower layer liquid through the image acquired by the image capturing mechanism 22, and specifically includes:
the recognition module recognizes the boundary between two adjacent layers of liquid in the image and the boundary between the upper layer of liquid and the insulating rod 212 to determine the position of each layer, and the measurement module measures the depths of the upper layer of liquid, the middle layer of liquid and the lower layer of liquid according to the position of each layer.
Or the identification module determines the position of each layer of the upper layer liquid, the middle layer liquid and the lower layer liquid according to the mapping table of the image colors and the layer types stored in the identification module, and the measurement module measures the depth of the upper layer liquid, the middle layer liquid and the lower layer liquid according to the position of each layer.
In this embodiment, a mapping table may be set in the control unit, and the mapping table may include a mapping relationship between image colors and layer categories.
As another alternative, the categories of the layers may be determined according to the order of the layers in the image. For example, from top to bottom, the first layer is a raw material layer, the second layer is an electrolyte layer, and the third layer is a refined aluminum layer. The position of each layer is determined by identifying the dividing line in the image.
In the embodiment, the control equipment further comprises a temperature measuring device 3 and a temperature adjusting device, and is further used for controlling the temperature measuring device 3 to sense the current temperature of each of the three layers of liquid in the refined aluminum tank 1 in the refining process; and the temperature regulating device is used for controlling the temperature regulating device to regulate the temperature of the three-layer liquid in the refined aluminum tank 1 in the refining process; the control unit is also electrically connected with the temperature measuring device 3 and the temperature regulating device, and is used for obtaining the respective temperature difference of the three-layer liquid according to the respective set temperature of the three-layer liquid and the respective current temperature of the three-layer liquid, obtaining the respective required temperature regulating quantity of the three-layer liquid according to the respective temperature difference of the three-layer liquid and the respective depth of the three-layer liquid, and controlling the output of the temperature regulating device according to the respective required temperature regulating quantity of the three-layer liquid.
In this embodiment, as shown in fig. 4 and 5, the temperature measuring device 3 is movably connected above the refined aluminum tank 1 along the vertical direction, and the control unit is used for driving the detection end of the temperature measuring device 3 to descend into the refined aluminum tank 1, so as to obtain the respective current temperatures of the three layers of liquid in the refined aluminum tank 1.
In this embodiment, the temperature measuring device 3 includes a reading mechanism, a temperature measuring mechanism 31 and a temperature measuring driving member 32, where the temperature measuring driving member 32 is connected with the temperature measuring mechanism 31 and is used to drive the temperature measuring mechanism 31 to lift, so that the temperature measuring mechanism 31 stretches into the liquid level of each layer reaching the refined aluminum tank 1.
In the three-layer process refined aluminum electrolysis production process, the three-layer liquid in the refined aluminum tank 1 needs to be kept at different set temperatures. It should be noted that, the three-layer liquid depth measuring device 2 has measured the depth of each layer of liquid, and the depth of each layer of liquid may be temporarily stored in the control unit for calling, and the control unit may obtain the lifting stroke corresponding to the reaching of each layer of the temperature measuring mechanism 31 according to the depth of each layer of liquid and the current position of the temperature measuring mechanism 31, and control the temperature measuring driving member 32 to drive the stroke corresponding to the descending of the temperature measuring mechanism 31, so that the temperature measuring mechanism 31 may reach the corresponding layer.
In this embodiment, the control unit obtains the respective required temperature adjustment amounts of the three-layer liquid according to the respective temperature differences of the three-layer liquid and the respective depths of the three-layer liquid, that is, how much heating amount is required to reach the set temperature, and then controls the output of the temperature adjustment device of the refined aluminum tank 1 according to the respective required temperature adjustment amounts of the three-layer liquid. The arrangement mode can directly regulate and control the temperature of each layer of liquid in the refined aluminum tank 1 on line in real time, and can ensure that each layer of liquid is in the optimal set temperature through the accurate regulation and control, thereby effectively improving the production efficiency and the product quality.
In this embodiment, the control unit may be a commercially available industrial personal computer or plc controller, for example: the model of the industrial personal computer is IPC-610L generated by the Minghua technology. The control unit also comprises a calculation module, the process of obtaining the temperature adjustment amounts required by the three layers of liquid can be completed by a way of predefining an arithmetic expression in the calculation module, the arithmetic expression is related to a plurality of factors such as working temperature, components of each layer of liquid, power and mechanical properties of the temperature adjustment device, volume of the refined aluminum tank and the like, and the temperature adjustment amounts can be specifically determined by staff according to the factors and then input into the control unit.
In this embodiment, the reading mechanism is electrically connected to the temperature measuring mechanism 31, and is configured to receive the temperature electrical signal measured by the temperature measuring mechanism 31, generate temperature data according to the temperature electrical signal, and output the temperature data. The reading mechanism can adopt a commercially available WPK6 series single-channel thermal meter, real-time temperature data can be displayed, and staff can acquire the layered real-time temperature data through the reading mechanism. So this system can carry out automatic temperature measurement to the aluminium liquid in the refined aluminium groove 1 to improve measurement efficiency and temperature measurement accuracy, can avoid the danger that leads to because of artifical temperature measurement moreover. The temperature measuring device 3 can measure the temperature of each layer to obtain the detailed temperature of each layer.
In this embodiment, a height sensor may be disposed on the temperature measuring mechanism 31, so as to sense the current height of the temperature measuring mechanism 31, so that the control unit can control the lifting stroke of the temperature measuring mechanism 31 according to the current height of the temperature measuring mechanism 31 and the respective depth positions of the three layers of liquid to be measured, thereby accurately reaching the positions of the layers of liquid.
In this embodiment, the temperature measuring mechanism 31 includes a thermocouple and a thermocouple protective sheath. The thermocouple protective sleeve is connected with the temperature measurement driving member 32, and the thermocouple is accommodated in the thermocouple protective sleeve. Therefore, the thermocouple and the thermocouple protecting sleeve can be synchronously driven to move by the temperature measuring driving member 32. The thermocouple is connected with the reading mechanism and is used for measuring the temperature of each layering respectively and sending a temperature electric signal to the reading mechanism. Specifically, the thermocouple may be a commercially available type K thermocouple.
Because the molten liquid in the refined aluminum tank 1 has the characteristics of high temperature, strong oxidation and the like, the conventional thermocouple adopted for temperature measurement has the problems of short service life, incapability of continuous measurement for a long time, high use and maintenance cost and the like. The thermocouple protective sleeve is sleeved on the outer side of the thermocouple, so that the service life of the thermocouple can be effectively prolonged. Preferably, the thermocouple protective sleeve is made of a silicon nitride material. Further, the outer side of the thermocouple protective sleeve is coated with a corrosion-resistant layer, and the corrosion-resistant layer is made of titanium dioxide materials.
In this embodiment, the thermometric drive member 32 includes a motor 321, a screw 322, a nut, a connection block 323, and a guide rod 324. Wherein, lead screw 322 extends along vertical direction, and the nut cover is located on lead screw 322. The motor 321 is in transmission connection with the screw rod 322 and is used for driving the screw rod 322 to rotate so as to drive the nut to move along the extending direction of the screw rod 322. The nut is connected with the connection block 323, and the guide rod 324 extends along the vertical direction and penetrates through the connection block 323 for guiding the nut and the connection block 323 to move along the vertical direction. The temperature measuring mechanism 31 is mounted on the connection block 323, and can move in the vertical direction along with the nut and the connection block 323. The screw-nut mechanism can realize more precise lifting movement so that the thermocouple can reach each aluminum liquid layering.
Specifically, in the present embodiment, the control unit is connected to the motor 321 by a wire. The lifting or lowering of the nut and thus the lifting of the temperature measuring mechanism 31 is controlled by controlling the rotation direction of the motor 321. Of course, it is understood that the thermometric drive member 32 may also be configured as a cylinder, a hydraulic cylinder, an electric push rod, or the like.
More specifically, the thermometry drive 32 further includes a mounting plate 325, the mounting plate 325 extending in a vertical direction. The upper and lower ends of the mounting plate 325 are fixedly connected with a first ear plate 326 and a second ear plate 327, respectively, and the first ear plate 326 and the second ear plate 327 are horizontally arranged. The motor 321 is mounted on the upper side of the first lug plate 326, and the upper and lower ends of the screw 322 are respectively connected with the first lug plate 326 and the second lug plate 327 in a rotating way through bearings. The output rotating shaft of the motor 321 is connected with the upper end of the screw rod 322 and is used for driving the screw rod 322 to rotate. The number of the guide rods 324 is two, the two guide rods 324 are respectively positioned at the left side and the right side of the screw rod 322, and the upper end and the lower end of the guide rods 324 are respectively connected with the first lug plate 326 and the second lug plate 327. Preferably, the mounting plate 325, the first ear plate 326 and the second ear plate 327 are all made of Q235 steel.
In this embodiment, the control device may be further configured with an alarm. The control unit is pre-stored with standard temperature ranges of each layer. The control unit is used for determining the layering of the temperature measuring mechanism 31 according to the lifting travel of the temperature measuring mechanism 31, and further determining the standard temperature range of the layering. The control unit is electrically connected with the reading mechanism and is used for acquiring the actual measured temperature data of the layering and comparing the actual measured temperature data with a standard temperature range. The control unit is electrically connected with the alarm and is used for sending a starting signal to the alarm when the layered temperature data exceeds the standard temperature range, and the alarm sends an alarm according to the starting signal so as to prompt the staff to timely handle the situation.
In this embodiment, the temperature measuring device 3 is mounted on the tank frame 14, wherein the temperature measuring driving member 32 is connected with the tank frame 14 through the mounting plate 325, and the bottom end of the temperature measuring mechanism 31 extends into the refined aluminum tank 1 through the feeding hole 111.
In this embodiment, as shown in fig. 6, the control device further includes a cathode elevation control device 4, the cathode elevation control device 4 includes a cathode elevation driving member 41 and a cathode rod 42, the bottom end of the cathode rod 42 is immersed in the supernatant in the refined aluminum tank 1, the control unit includes an acquisition module, the acquisition module is used for acquiring the real-time depth of the cathode rod 42 immersed in the supernatant in the refined aluminum tank 1, the control unit is further electrically connected with the cathode elevation driving member 41, and is used for determining whether the real-time depth of the cathode rod 42 immersed in the supernatant is within a set range, if not, the cathode elevation driving member 41 is controlled to drive the cathode rod 42 to elevate so as to adjust the current elevation until the real-time depth of the cathode rod 42 immersed in the supernatant is within the set range.
In this embodiment, the obtaining module includes an image recognition element, which is configured to obtain the current height of the cathode rod 41 by recognizing the marked line value set on the cathode rod 41, or directly obtain the current height of the cathode rod 41 by observing with human eyes, and then input the obtained current height into the control unit. The acquisition module further comprises a laser measurement piece 43 for acquiring the current height of the liquid level of the aluminum liquid by the time of reflection of the laser rays at the liquid level, wherein the laser measurement piece 43 is arranged on the tank frame 14 and is positioned above the refined aluminum tank 1. The acquisition module sends the current height of the cathode rod 41 and the current height of the liquid level of the aluminum liquid to the calculation module, and the calculation module calculates the real-time depth of the cathode rod 41 immersed in the aluminum liquid according to the current height and the current height.
The inventors have found that arcing, or short circuiting, etc., which often occurs during three-layer electrolytic refining is related to the depth of the cathode immersed in the aluminum liquid, and that arcing may result if the depth of the cathode immersed in the aluminum liquid is too shallow, and that the cathode may in turn contact the electrolyte and cause short circuiting if the depth of the cathode immersed in the aluminum liquid is too deep. Therefore, in order to avoid these problems, the system of the embodiment automatically controls the depth of the cathode rod 41 immersed in the aluminum liquid (i.e. the upper liquid of the three layers of liquid) through the cathode height control device 4, and after real-time adjustment, the depth of the cathode rod 41 immersed in the aluminum liquid is always within a proper setting range, so that the cathode rod is not too shallow, and the arcing and the firing are not too deep, and the short circuit is caused by the contact between the cathode and the electrolyte, thereby avoiding the interruption of the refining process caused by the problems, being beneficial to ensuring the production safety and the normal operation of the production, ensuring the stability of the refining process, improving the production efficiency and ensuring the product quality.
Since the step of adding aluminum (adding refined raw material into the refined aluminum tank 1), the step of discharging aluminum (obtaining refined product from the refined aluminum tank 1) and the change with time are the most major causes of the change of the liquid level of the aluminum liquid in the whole refining process, the system adjusts the real-time depth of immersing the cathode rod 41 in the aluminum liquid to be within the set range every second set time/after the step of adding aluminum/the step of discharging aluminum is completed in the refining process.
Specifically, in this embodiment, the control unit is further configured to receive a detection trigger signal triggered after the operator performs the aluminum adding/discharging operation on the refined aluminum tank 1, and send a control instruction to the acquisition module when the detection trigger signal is received/when the timing module counts the second set time, so as to drive the acquisition module to acquire the real-time depth of the cathode rod 41 immersed in the aluminum liquid. In this embodiment, the second setting time may be one hour, that is, each hour, the control unit sends a control command to the obtaining module to drive the obtaining module to obtain the real-time depth of the cathode rod 41 immersed in the supernatant liquid in the refined aluminum tank 1.
The setting mode can avoid the immersion depth of the cathode rod 41 exceeding the set range caused by the change of the liquid level, and can also avoid the immersion depth of the cathode rod 41 exceeding the set range caused by the change of the liquid level along with time or other conditions, namely, comprehensively considering active and passive factors which cause the immersion depth of the cathode rod 41 to exceed the set range.
The control equipment of the refined aluminium tank 1 may be equipped with a master control station for monitoring the refining process, by which the operator, after completing the aluminium adding operation step and the aluminium extracting operation step, generates a detection trigger signal and sends it to the control unit, so as to trigger the cathode elevation control means 4 to perform the step of automatically controlling the depth of the cathode rod 41 immersed in the aluminium liquid.
In this embodiment, the real-time depth of the cathode rod 41 immersed in the molten aluminum is specifically the distance between the bottom end of the cathode rod 41 and the molten aluminum level, and the setting range of the real-time depth is preferably 5cm to 15cm, and when the obtained real-time depth is not within the setting range, the real-time depth is automatically adjusted to any depth of 5cm to 15 cm. After the system of the embodiment is tried out, the phenomena of arcing and ignition or short circuit caused by the problems of the cathode and the liquid level do not occur any more.
In this embodiment, the cathode lifting driving member 41 includes a lifting motor 411, a transmission mechanism 412 and a bus 413, where the bus 413 is connected with a plurality of cathode rods 41 serving as cathodes, the transmission mechanism 412 is connected between the lifting motor 411 and the bus 413, and the lifting motor 411 is electrically connected with the control unit and is used for driving the transmission mechanism 412 to drive the bus 413 to lift, so as to drive the cathode rods 41 to lift to adjust the current height of the cathodes.
In this embodiment, the transmission mechanism 412 includes a lifting assembly 4121, the lifting assembly 4121 includes a bus bar clamp 4122, a lifting shaft 4123 and a transmission shaft 4124, the bus bar clamp 4122 is provided with two bus bar clamps, which are respectively used for clamping two ends of the bus bar 413, the lifting shaft 4123 is also provided with two bus bar clamps 4122, which are respectively connected with the output end of the lifting motor 411, the shaft body is in transmission connection with the two lifting shafts 4123, and the two lifting shafts 4123 are driven by the lifting motor 411 to drive the two bus bar clamps 4122 to synchronously lift, so that the bus bar 413 can be kept horizontal in the lifting process, and the immersion depth of each cathode rod 41 is consistent.
In this embodiment, two sets of bus bars 413 are provided, and eight cathode bars 41 are provided on each set of bus bars 413. The transmission mechanism 412 includes two sets of lifting assemblies 4121, and each set of lifting assemblies 4121 corresponds to two sets of bus bars 413 one by one.
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In this embodiment, the control device further includes a polar liquid pressure drop measuring device 5, which is used to obtain a polar liquid pressure drop between the upper layer liquid and the lower layer liquid in the refined aluminum tank 1 during the refining process. The refined aluminum tank 1 has an anode and a cathode, the anode is in fluid communication with the lower layer, and a cathode rod 41 as a cathode is in fluid communication with the upper layer. When the electrolytic refining is performed, the anode and the cathode are powered on, so that a direct current is generated between the cathode and the anode. Under the action of direct current, the melt in the refined aluminum tank 1 generates electrochemical reaction. The raw aluminum at the bottom of the refined aluminum tank 1 is dissolved to generate aluminum ions, the aluminum ions move to the cathode, and a refined aluminum layer is formed at the upper part of the refined aluminum tank 1. The remaining impurities of the electrolytic reaction accumulate in the anode conductor at the bottom of the tank and in the intermediate electrolyte layer, resulting in an increase in the drop in the pole fluid pressure between the cathode and the anode. Therefore, in the present embodiment, the impurity content in the refined aluminum tank 1 can be judged by monitoring the pressure drop value between the polar liquids by the polar liquid pressure drop measuring device 5.
Specifically, the polar hydraulic pressure drop measuring device 5 includes a cathode probe 51, an anode probe 52 and an anode probe driving member 53, the cathode probe 51 is electrically connected with the cathode rod 42 so as to be electrically connected with an upper layer liquid in the refined aluminum tank 1 through the cathode rod 42, the anode probe driving member 53 is connected with the anode probe 52 and is used for driving the anode probe 52 to lift so that the anode probe 52 contacts a lower layer liquid in the refined aluminum tank 1, and the control unit is also electrically connected with the cathode probe 51 and the anode probe 52 respectively and is used for obtaining the polar liquid pressure drop between the upper layer liquid and the lower layer liquid in the refined aluminum tank 1 when the anode probe 52 contacts the lower layer liquid in the refined aluminum tank 1, so as to judge the impurity content in the refined aluminum tank 1.
The cathode probe 51 and the anode probe 52 are made of conductive materials, and the cathode probe 51 and the anode probe 52 are electrically connected with the control unit through a wire or a wireless, bluetooth and other signal transceiver module. Preferably, the cathode probe 51 and the anode probe 52 are both made of stainless steel materials. Still further, the anode probe 52 and the cathode probe 51 may employ commercially available K-type screw probes. Of course, the cathode probe 51 and the anode probe 52 may be made of other materials, such as a copper alloy or other material with high conductivity.
When the anode probe 52 is driven by the anode probe driving member 53 to descend to contact with the lower liquid in the refined aluminum tank 1. The measuring circuit consisting of the cathode probe 51, the anode probe 52 and the control unit is conducted so that a current passes through the control unit. At this time, the control unit can measure the pole liquid pressure drop between the cathode and the anode in the refined aluminum tank 1. Specifically, the control unit includes a voltage measurement module for measuring the pole liquid drop, and the voltage measurement module may be a commercially available voltmeter, for example: voltmeters of OHR-C200 model, manufactured by iridescent company.
In this embodiment, the anode probe 52 is provided with a second position sensor for sensing the position of the anode probe 52, and the second position sensor sends a pressure measurement signal to the control unit when sensing that the anode probe 52 is at a position contacting the lower liquid in the refined aluminum tank 1, and the control unit determines the polar liquid pressure drop between the upper liquid and the lower liquid in the refined aluminum tank 1 after receiving the pressure measurement signal; after the measurement is completed, the control unit controls the anode probe driving piece 53 to drive the anode probe 52 to ascend, and the second position sensor sends a reset signal to the control unit when sensing that the anode probe 52 is at the reset position, and the control unit controls the anode probe driving piece 53 to stop driving.
In the large three-layer liquid refined aluminum tank 1, the amount of the electrode liquid is large, and therefore, in order to ensure the efficiency of producing refined aluminum, a plurality of pairs of cathodes and anodes are provided in the refined aluminum tank 1. Because the impurity content of the polar liquid between each pair of the cathode and the anode is different, only the voltage drop between one group of the cathode and the anode is measured, and the voltage drop of the polar liquid in the whole refined aluminum tank 1 is not reflected, and the operation condition of the refined aluminum tank 1 is not judged. Therefore, in the present embodiment, a plurality of cathode bars 42 are provided, a plurality of cathode probes 51 are provided corresponding to each cathode bar 42, a plurality of anode probes 52 are provided, and the anode probes 52 and the cathode probes 51 are provided in pairs, so that the control unit obtains the pole liquid pressure drops at a plurality of positions between the upper layer liquid and the lower layer liquid in the refined aluminum tank 1.
Specifically, the number of cathode probes 51 is 16 as well as the number of cathode bars 42. The 16 cathode probes 51 are divided into two groups of 8 cathode probes 51 each. Two groups of cathode probes 51 are respectively positioned at the left side and the right side of the refined aluminum tank 1 and are in one-to-one correspondence with the cathode bars 42.
The number of the anode probes 52 is 16, the anode probes 52 are divided into two groups, the anode probes 52 are in one-to-one correspondence with the cathode probes 51, anode probe driving pieces 53 are respectively arranged on the left side and the right side of the refined aluminum tank 1, and each anode probe driving piece 53 is connected with one group of anode probes 52. An anode probe driving member 53 is used to drive a set of anode probes 52 to move up and down synchronously so that the anode probes 52 contact the anode in the refined aluminum tank 1. It will be understood, of course, that the mounting positions of the anode probe 52 and the cathode probe 51 should be adjusted according to the positions of the pairs of anode and cathode in the refined aluminum tank 1.
In this embodiment, the number of the voltage measurement modules is plural, and each voltage measurement module is connected to a pair of anode probes 52 and cathode probes 51, so as to measure the polar hydraulic pressure drop between the anode and the corresponding cathode when the anode probes 52 contact the lower layer liquid in the refined aluminum tank 1. The polar liquid pressure drop between a plurality of groups of anodes and cathodes in the refined aluminum tank 1 can be measured simultaneously through a plurality of voltage measuring modules.
The control unit is used for receiving data signals sent by the voltage measurement modules and outputting a plurality of pole hydraulic pressure drop data so as to facilitate the staff to observe the pole hydraulic pressure drop value of each place in the refined aluminum tank 1 in real time. Specifically, the control unit may configure a data output module, which may be a commercially available liquid crystal display.
The anode probe driver 53 includes a lifter 536 and two driving motors 531. The lift bar 536 extends in a horizontal direction, and a plurality of anode probes 52 are each mounted on the lift bar 536. The two driving motors 531 are respectively connected with two ends of the lifting rod 536 in a transmission manner and are used for pushing the lifting rod 536 to lift.
Specifically, a lead screw 533, a nut, a connection piece 534, and a guide lever 535 are provided at the output end of the driving motor 531. Wherein, lead screw 533 extends along vertical direction, and the nut cover is located on lead screw 533. The driving motor 531 is connected to the screw 533 in a transmission manner and is used for driving the screw 533 to rotate, so as to drive the nut to move along the extending direction of the screw 533. The nut is connected to the connection piece 534. The guide bar 535 extends in a vertical direction and penetrates the connection piece 534 for guiding the nut and the connection piece 534 to move in a vertical direction. Lifting bar 536 is fixedly connected to connecting piece 534 and is movable in a vertical direction with nut and connecting piece 534.
The anode probe drive 53 also includes a mount 532. The mounting piece 532 extends along the vertical direction, and the upper and lower both ends of the mounting piece 532 are fixedly connected with two horizontally arranged otic placodes respectively. The driving motor 531 is installed on the upper side of the upper lug plate, and the upper and lower ends of the lead screw 533 are respectively connected with the two lug plates in a rotating way through bearings. An output shaft of the driving motor 531 is connected to an upper end of the screw 533. The number of the guide rods 535 is two, the two guide rods 535 are respectively positioned at the left side and the right side of the screw 533, and the upper end and the lower end of the guide rods 535 are respectively connected with two lug plates. Preferably, the mount 532 and both ear plates are made of Q235 steel.
Of course, it is understood that the driving motor 531 may also have a conventional structure such as an air cylinder, a hydraulic cylinder, and an electric push rod.
In the present embodiment, the control unit pre-stores the descending stroke of the anode probe 52, that is, the distance between the initial position of the anode probe 52 and the anode. The control unit is electrically connected with the driving motor 531 and is configured to send a driving signal to the driving motor 531 when receiving a start command sent by a worker. After receiving the driving signal, the driving motor 531 starts to drive the screw 533 to rotate, and then drives the anode probe 52 to descend by a preset stroke, so that the anode probe 52 contacts the lower liquid, and is electrically connected with the anode, or is directly electrically connected with the anode. When the anode probe 52 is connected with the anode, a measuring loop among the cathode probe 51, the voltage measuring module and the anode probe 52 is conducted, the voltage measuring module collects a voltage signal, and then the pole hydraulic pressure drop value between the cathode and the anode is measured. The control unit sends a reset signal to the driving motor 531 when receiving the voltage signal output from the voltage measurement module. The driving motor 531 drives the screw 533 to reverse according to the reset signal, so that the anode probe 52 is lifted to the initial position, and the measurement is completed.
In this embodiment, the refined aluminum tank 1 includes a tank body 11, a cover door 12 and an opening and closing driving member 13, three layers of liquid are contained in the tank body 11, a charging opening 111 is formed in the upper portion of the tank body 11, and is used for feeding raw aluminum into the tank body 11, the driving end of the opening and closing driving member 13 is connected with the cover door 12, and a control unit is electrically connected with the opening and closing driving member 13 and is used for controlling the opening and closing driving member 13 to drive the cover door 12 to close the charging opening 111 and open the charging opening 111.
Specifically, the first position is set directly above the charging port 111, and the second position is set on one side of the charging port 111. An opening and closing drive member 13 is connected to the cover door 12 for driving the cover door 12 to move the cover door 12 between the first position and the second position. When the cover door 12 is in the first position, the charging port 111 can be closed, and when the cover door 12 is in the second position, the charging port 111 is opened.
The cover door 12 is made of an aluminum alloy material. And the thickness of the cover door 12 is about 100mm. By providing the cover door 12 to close the charging port 111, heat preservation of the inside of the tank 11 can be achieved. In addition, when the tank 11 needs to be charged, the cover door 12 is moved from the first position to the second position by the opening and closing driving piece 13, so that the charging opening 111 can be opened, and the raw aluminum can be conveniently added into the tank 11 by a worker. Therefore, the tank 11 can effectively avoid the reduction of the temperature in the tank, further reduce the influence on the current distribution in the tank, and can not influence the normal operation of production.
In this embodiment, the cover door 12 has a plate shape. The cover door 12 is hinged to the upper end of the tank 11 by a link 15. The opening and closing driving member 13 is used for pushing the cover door 12 to swing the connecting rod 15, so that the cover door 12 moves between the first position and the second position.
Further, the opening and closing driving member 13 includes a pushing member 131 and an ear lever 133. The upper end of the tank body 11 is provided with a tank frame 14, and the pushing piece 131 is arranged on the tank frame 14 of the tank body 11. The pushing member 131 includes a telescopic rod 132 extending along a horizontal direction, and can be telescopic along the horizontal direction, one end of the telescopic rod 132 is connected with the cover door 12 through an ear rod 133, and is used for pushing the ear rod 133, so as to drive the cover door 12 to move between a first position and a second position. The ear lever 133 includes a first section and a second section, the first section of the ear lever 133 extending in a vertical direction, a lower end thereof being connected to the hood door 12, and an upper end thereof being hinged to the second section of the ear lever 133. The other end of the second section of the ear lever 133 is connected to the telescopic lever 132. When the telescopic link 132 is extended, the lug 133 pushes the cover door 12 so that the cover door 12 moves to the first position. When the telescoping rod 132 is retracted, the ear rod 133 pulls the hood door 12 such that the hood door 12 moves to the second position. Because of the high temperature of the tank 11, the telescoping rod 132 and the ear rod 133 should be made of a high temperature resistant material. Preferably, the telescoping rod 132 and the ear rod 133 are made of an A3 stainless steel material.
Further, the pushing member 131 is an air cylinder, and the air cylinder may be selected from existing products, for example: a cylinder model number MSPCB32 manufactured by mism corporation. Of course, it is understood that the pushing member 131 may be a hydraulic cylinder, an electric screw, or the like.
In this embodiment, the upper end edge of the charging port 111 is provided with an annular protrusion 112. The bottom of the cover door 12 is provided with a groove 121, the groove 121 is cylindrical, and the groove 121 is used for accommodating the annular bulge 112 therein so as to realize the sealing between the cover door 12 and the charging hole 111, and further improve the heat preservation effect of the cover door 12 on electrolyte in the tank 11.
Further, a heat-insulating layer is arranged in the groove 121 of the cover door 12, so as to strengthen the heat-insulating effect of the cover door 12. Preferably, the insulating layer is made of a calcium silicate material.
In this embodiment, the control device further includes a transporting unit, and the control unit is electrically connected to the transporting unit, and is configured to compare the actual depth of the lower layer liquid with the set depth of the lower layer liquid after the respective depths of the three layer liquid in the refined aluminum tank 1 are obtained by the three layer liquid depth measuring device 2, and when the depth of the lower layer liquid is lower than the set depth, control the transporting unit to transport the raw aluminum to the charging port 111.
The transportation unit is provided with a position sensor, a second induction point is arranged at the charging port 111, the position sensor sends an aluminum adding signal to the control unit when sensing the second induction point, the control unit sends a first control signal to control the opening and closing driving piece 13 to drive the cover door 12 to open the charging port 111 after receiving the aluminum adding signal, and the timing module of the control unit is further used for starting timing when sending the first control signal and sending a second control signal to control the opening and closing driving piece 13 to drive the cover door 12 to close the charging port 111 after the timing time reaches the charging time.
In this embodiment, the transport unit is an AGV car, that is, an automatic guided transport car. Through preset motion route to the AGV dolly for the AGV dolly can be automatic back and forth movement between the deposit point of aluminium ingot and refined aluminium groove 1. When the AGV dolly reaches the storage point of aluminium ingot, send first prompt signal to the staff to remind the staff to carry aluminium ingot to the AGV dolly. When the AGV trolley reaches the charging port 111 of the refined aluminum tank 1, the AGV trolley sends a second prompting signal, namely an aluminum adding signal, to the control unit, and the control unit sends a first control signal to the opening and closing driving piece 13 according to the second prompting signal. The opening and closing driving piece 13 controls the telescopic rod 132 to retract according to the first control signal so as to drive the cover door 12 to move from the first position to the second position, thereby opening the charging opening 111, and facilitating the charging of staff.
It should be noted that, the aluminum ingot storage point is provided with a first induction point, and the charging port 111 of the refined aluminum tank 1 is provided with a second induction point. When the AGV trolley reaches the aluminum ingot storage point, the position sensor can sense the first sensing point, so that a first prompt signal is sent; when the AGV trolley reaches the charging port 111, the position sensor can sense a second sensing point, so that a second prompt signal is sent.
Of course, in other embodiments, the AGV may also be located by providing a timer in the AGV that is used to calculate the travel time of the AGV and thereby learn the location of the AGV. The AGV trolley is used for carrying out one operation cycle back and forth between the aluminum ingot storage point and the refined aluminum groove 1, and the distance between the aluminum ingot storage point and the refined aluminum groove 1 is unchanged, so that the operation cycle of the AGV trolley is basically unchanged. When the running time of the AGV trolley reaches one running period, the AGV trolley is judged to reach the charging port 111 of the refined aluminum tank 1, and a second prompt signal is sent to the control unit through a timer.
In this embodiment, the tank 11 is provided with a closed top for heat preservation, but holes can be formed at corresponding positions for the cathode height control device 4 and the polar hydraulic pressure drop measuring device 5 to smoothly detect, so as to facilitate entry.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (12)
1. A high purity aluminum production system, characterized in that: comprises a refined aluminum tank (1) and control equipment,
the refined aluminum tank (1) is internally provided with three layers of liquid, the control equipment is used for controlling the refined aluminum tank (1) to execute the refining process,
the control equipment comprises a control unit and a three-layer liquid depth measuring device (2), the control equipment is also used for controlling the three-layer liquid depth measuring device (2) to measure the respective depths of the three layers of liquid in the refined aluminum tank (1) in the refining process,
the three-layer liquid depth measuring device (2) is arranged above the refined aluminum tank (1) and comprises a penetrating mechanism (21) and a shooting mechanism (22);
the control unit is electrically connected with the penetrating mechanism (21) and is used for controlling the penetrating mechanism (21) to penetrate into the refined aluminum tank (1) and abut against the tank bottom of the refined aluminum tank (1) and then completely move out of the refined aluminum tank (1), so that the penetrating mechanism (21) is adhered with adherends in the three-layer liquid;
The control unit is also electrically connected with the image pickup mechanism (22) and is used for controlling the image pickup mechanism (22) to pick up images of the image pickup mechanism (21) after the image pickup mechanism (21) moves out of the refined aluminum tank (1), so that respective depths of three layers of liquid in the refined aluminum tank (1) are obtained through the images.
2. The high purity aluminum production system of claim 1 wherein: the detection mechanism (21) is provided with a first position sensor for sensing the position of the detection mechanism (21),
the control unit comprises a timing module, the first position sensor sends a sounding signal to the control unit when sensing that the detection mechanism (21) is at a position abutting against the bottom of the refined aluminum tank (1), the control unit starts timing after receiving the sounding signal,
the control unit controls the detection mechanism (21) to completely move out of the refined aluminum groove (1) after the timing module counts to reach a first set time, and the first position sensor sends a shooting signal to the control unit when sensing that the detection mechanism (21) is positioned at the position of completely moving out of the refined aluminum groove (1), and the control unit controls the image pickup mechanism (22) to shoot an image of the detection mechanism (21) after receiving the shooting signal.
3. The high purity aluminum production system of claim 1 wherein: the penetration mechanism (21) comprises a penetration driving piece (211) and an insulating rod (212),
The penetration driving piece (211) is electrically connected with the control unit and is used for driving the insulating rod (212) to descend into the refined aluminum groove (1) and ascend out of the refined aluminum groove (1) under the control of the control unit.
4. A high purity aluminum production system according to claim 3 wherein: the three-layer liquid depth measuring device (2) also comprises a sensitization screen (23), the sensitization screen (23) is arranged above the refined aluminum groove (1),
the control unit controls the penetration driving piece (211) to drive the insulating rod (212) to ascend and move out of the refined aluminum groove (1), the lower part of the insulating rod (212) adhered with the adhesion object corresponds to the position of the intensifying screen (23), at the moment, the image pickup mechanism (22) and the intensifying screen (23) are respectively positioned at two sides of the insulating rod (212),
the sensitization screen (23) is used for improving the contrast of the shot image when the imaging mechanism (22) shoots the lower part of the insulating rod (212).
5. The high purity aluminum production system of claim 1 wherein: the control equipment also comprises a temperature measuring device (3) and a temperature adjusting device,
the control equipment is also used for controlling the temperature measuring device (3) to sense the current temperature of each three layers of liquid in the refined aluminum tank (1) in the refining process; and the temperature regulating device is used for controlling the temperature regulating device to regulate the temperature of the three-layer liquid in the refined aluminum tank (1) in the refining process;
The control unit is also electrically connected with the temperature measuring device (3) and the temperature regulating device, and is used for obtaining the respective temperature difference of the three-layer liquid according to the respective set temperature of the three-layer liquid and the respective current temperature of the three-layer liquid, obtaining the respective required temperature regulating quantity of the three-layer liquid according to the respective temperature difference of the three-layer liquid and the respective depth of the three-layer liquid, and controlling the output of the temperature regulating device according to the respective required temperature regulating quantity of the three-layer liquid.
6. The high purity aluminum production system of claim 5 wherein: the temperature measuring device (3) is movably connected above the refined aluminum tank (1) along the vertical direction,
the control unit is used for driving the detection end of the temperature measuring device (3) to descend into the refined aluminum tank (1), so that the current temperature of each three layers of liquid in the refined aluminum tank (1) is obtained.
7. The high purity aluminum production system of claim 1 wherein: the control equipment also comprises a cathode height control device (4), the cathode height control device (4) comprises a cathode lifting driving piece (41) and a cathode rod (42), the bottom end of the cathode rod (42) is immersed into the upper layer liquid in the refined aluminum tank (1),
the control unit comprises an acquisition module which is used for acquiring the real-time depth of the cathode rod (42) immersed in the upper layer liquid in the refined aluminum tank (1) when the aluminum adding step/the aluminum discharging step are completed at each second set time interval,
The control unit is also electrically connected with the cathode lifting driving piece (41) and is used for judging whether the real-time depth of the cathode rod (42) immersed in the upper layer liquid is within a set range, and if not, the control unit controls the cathode lifting driving piece (41) to drive the cathode rod (42) to lift so as to adjust the current height until the real-time depth of the cathode rod (42) immersed in the upper layer liquid is within the set range.
8. The high purity aluminum production system of claim 1 wherein: the control unit also comprises a timing module, the control unit is also used for receiving a detection trigger signal triggered by the refined aluminum tank (1) after executing aluminum adding operation/aluminum discharging operation,
and the timing module is used for sending a control instruction to the acquisition module when the detection trigger signal is received and the timing module counts the second set time, so as to drive the acquisition module to acquire the real-time depth of the upper layer liquid in the refined aluminum tank (1) immersed by the cathode rod (41).
9. The high purity aluminum production system of claim 7 wherein: the control equipment also comprises a polar liquid pressure drop measuring device (5) which is used for obtaining the polar liquid pressure drop between the upper layer liquid and the lower layer liquid in the refined aluminum tank (1) in the refining process,
the polar hydraulic pressure drop measuring device (5) comprises a cathode probe (51), an anode probe (52) and an anode probe driving piece (53), wherein the cathode probe (51) is electrically connected with a cathode rod (42) so as to be electrically connected with the upper layer liquid in the refined aluminum tank (1) through the cathode rod (42),
The anode probe driving piece (53) is connected with the anode probe (52) and is used for driving the anode probe (52) to lift so that the anode probe (52) contacts with the lower layer liquid in the refined aluminum tank (1),
the control unit is also electrically connected with the cathode probe (51) and the anode probe (52) respectively and is used for acquiring the pole liquid pressure drop between the upper layer liquid and the lower layer liquid in the refined aluminum tank (1) when the anode probe (52) contacts the lower layer liquid in the refined aluminum tank (1).
10. The high purity aluminum production system of claim 9 wherein: the anode probe (52) is provided with a second position sensor for sensing the position of the anode probe (52),
the second position sensor sends a pressure measurement signal to the control unit when sensing that the anode probe (52) is positioned at a position contacting with the lower layer liquid in the refined aluminum tank (1), the control unit receives the pressure measurement signal and then determines the polar liquid pressure drop between the upper layer liquid and the lower layer liquid in the refined aluminum tank (1),
after the measurement is completed, the control unit controls the anode probe driving piece (53) to drive the anode probe (52) to ascend, and the second position sensor sends a reset signal to the control unit when sensing that the anode probe (52) is at a reset position, and the control unit controls the anode probe driving piece (53) to stop driving.
11. The high purity aluminum production system of claim 1 wherein: the refined aluminum tank (1) comprises a tank body (11), a cover door (12) and an opening and closing driving piece (13),
the tank body (11) is internally provided with the three layers of liquid, the upper part of the tank body (11) is provided with a charging hole (111) for charging raw aluminum into the tank body (11),
the driving end of the opening and closing driving piece (13) is connected with the cover door (12), and the control unit is electrically connected with the opening and closing driving piece (13) and used for controlling the opening and closing driving piece (13) to drive the cover door (12) to seal the charging opening (111) and open the charging opening (111).
12. The high purity aluminum production system of claim 11 wherein: the control device further comprises a transport unit,
the control unit is electrically connected with the transportation unit and is used for comparing the actual depth of the lower liquid with the set depth of the lower liquid after the respective depths of the three layers of liquid in the refined aluminum tank (1) are obtained by the three-layer liquid depth measuring device (2), and controlling the transportation unit to transport the raw aluminum to the feeding hole (111) when the depth of the lower liquid is lower than the set depth,
the transportation unit is provided with a position sensor, a charging opening (111) is provided with a sensing point, the position sensor sends an aluminum adding signal to the control unit when sensing the sensing point, the control unit sends a first control signal to control the opening and closing driving piece (13) to drive the cover door (12) to open the charging opening (111) after receiving the aluminum adding signal,
The control unit also comprises a timing module which is used for starting timing when the first control signal is sent out, and sending out the second control signal to control the opening and closing driving piece (13) to drive the cover door (12) to close the charging opening (111) after the timing time length reaches the charging time length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310704472.4A CN116875816A (en) | 2023-06-13 | 2023-06-13 | High-purity aluminum production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310704472.4A CN116875816A (en) | 2023-06-13 | 2023-06-13 | High-purity aluminum production system |
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| CN116875816A true CN116875816A (en) | 2023-10-13 |
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| CN202310704472.4A Pending CN116875816A (en) | 2023-06-13 | 2023-06-13 | High-purity aluminum production system |
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| CN (1) | CN116875816A (en) |
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- 2023-06-13 CN CN202310704472.4A patent/CN116875816A/en active Pending
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