CN117089890A - Technological method for producing electrolytic manganese metal electrolysis section - Google Patents
Technological method for producing electrolytic manganese metal electrolysis section Download PDFInfo
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- CN117089890A CN117089890A CN202310848278.3A CN202310848278A CN117089890A CN 117089890 A CN117089890 A CN 117089890A CN 202310848278 A CN202310848278 A CN 202310848278A CN 117089890 A CN117089890 A CN 117089890A
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 121
- 239000003792 electrolyte Substances 0.000 claims abstract description 63
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 49
- 239000011572 manganese Substances 0.000 claims abstract description 49
- 238000003860 storage Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 26
- 230000007935 neutral effect Effects 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 239000002893 slag Substances 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229910001385 heavy metal Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000151 deposition Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 7
- 229940099596 manganese sulfate Drugs 0.000 description 6
- 239000011702 manganese sulphate Substances 0.000 description 6
- 235000007079 manganese sulphate Nutrition 0.000 description 6
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 6
- 238000004886 process control Methods 0.000 description 5
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- IPJKJLXEVHOKSE-UHFFFAOYSA-L manganese dihydroxide Chemical compound [OH-].[OH-].[Mn+2] IPJKJLXEVHOKSE-UHFFFAOYSA-L 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/10—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of chromium or manganese
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The application discloses a process method for producing an electrolytic metal manganese electrolysis section, and belongs to the technical field of metal manganese production. Mainly comprises the following steps: firstly, preparing manganese ore into neutral liquid and storing the neutral liquid in a liquid pool; then pumping the neutral liquid in the liquid pool to an external circulation liquid storage tank, and pumping the neutral liquid in the external circulation liquid storage tank to an electrolytic tank; meanwhile, the neutral liquid entering the electrolytic tank is used for depositing manganese in the cathode region, sulfuric acid is produced in the anode region, then overflows out of the electrolytic tank through the lower part of the anode chamber and is sent to a chemical combination working section to leach manganese ore, so that an electrolyte external circulation system is communicated with the position of the cathode region of the electrolytic tank, and one end of the electrolyte external circulation system, which is far away from the electrolytic tank, is communicated with an external circulation liquid storage tank. According to the process method for producing the electrolytic manganese metal electrolysis working section, disclosed by the application, the labor intensity of workers is reduced, the period of electrolytic cleaning tank is prolonged, the amount of new electrolyte is reduced, and the yield of electrolytic manganese single plates is improved in a mode of purifying, cooling and circulating outside the electrolytic tank.
Description
Technical Field
The application relates to the technical field of metal manganese production, in particular to a process method for producing an electrolytic metal manganese electrolysis section.
Background
The existing main process for producing the electrolytic manganese metal electrolytic section comprises the following steps: the neutral liquid high-level tank automatically flows into a liquid inlet chute (manual valve controls flow) of the electrolysis plant, automatically flows into the cathode area of each electrolysis tank unit through a hose, the neutral liquid entering each electrolysis tank is directionally distributed and moves under the action of current of a cathode plate and an anode plate, manganese is deposited (hydrogen evolution) at the cathode plate, the neutral liquid enters the anode area through a diaphragm bag, sulfuric acid (manganese dioxide) is produced at the anode plate, overflows out of the electrolysis tank through a liquid return pipe at the lower part of the anode chamber, enters an anode liquid total launder, flows into the anode liquid pool and is sent to a chemical combination working section to leach manganese ore.
The main disadvantages of the process are:
1. the limit value of acid resistance (efficiency 100%) of the diaphragm bag of the electrolytic tank in the electrolytic section is 50g/L, the acid content in the anode liquid area is controlled not to exceed the limit value of acid resistance of the diaphragm bag by the process that the fresh manganese sulfate electrolyte flows into the anode liquid of the electrolytic tank and flows out of the electrolytic tank, so that the flow rate of the fresh manganese sulfate electrolyte into the electrolytic tank cannot be lower than the minimum value, the maximum value of the manganese content of the fresh manganese sulfate electrolyte cannot exceed 39+/-1 g/L, the end point manganese content of the manganese sulfate electrolyte prepared in the front-end chemical combination section is limited, the chemical carrier liquid (H2O) is large in volume, and the operation cost is high;
2. the cathode region in the electrolytic tank of the electrolytic section is controlled to have a PH value of 7.0-7.5 by utilizing a manganese precipitation process, the electrolytic solution of manganese sulfate is not subjected to independent purification of magnesium in the electrolytic solution synthesis and purification section, the electrolytic solution of manganese sulfate inevitably generates precipitation of manganese hydroxide and magnesium hydroxide under the PH value, and selenium is added in the cathode region of the electrolytic tank, so that the diaphragm bag is blocked to face the cathode side along with the migration direction of liquid in the electrolytic tank, the electrolysis cannot be performed, the cleaning treatment of the electrolytic tank is required, and the operation of cleaning the diaphragm bag and the precipitate in the cathode region is carried out, wherein the period of the general electrolytic tank cleaning is 8-12 days;
3. the electrolytic tank in the electrolytic section adopts direct current and is characterized by high current and low voltage. In order to reduce the electricity consumption, the conventional electrolytic cell installation mode of the industrial electrolytic plant is to increase the number of electrolytic cells connected in series (circuit angle). This results in a high value of the total current and a significant electromagnetic field effect in the electrolysis plant. The on-line analysis instrument is disturbed (manganese content, temperature and PH value in the electrolytic tank), and the process control is automatic and intelligent, which has technical bottlenecks;
4. the electrolytic tank in the electrolytic section adopts a self-flowing hose to feed liquid in a static pressure difference self-flowing mode, the flow of the feed liquid is manually controlled by a tank surface worker, the tank manganese analysis is generally carried out in a sampling inspection mode, and the PH value and the tank manganese index of a cathode area in each tank are different, so that the manganese content in the tank of the individual electrolytic tank exceeds the process control requirement, and the metal recovery rate is reduced;
based on the above problems, it is therefore necessary to provide a process for producing electrolytic manganese metal electrolysis sections which solves the above problems.
It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.
Disclosure of Invention
Based on the above problems existing in the prior art, the present application aims to solve the problems: the technological method for producing the electrolytic manganese metal electrolysis working section has the advantages of improving the yield of electrolytic manganese single plates and the yield of electrolytic manganese single plates, prolonging the period of electrolytic clean tanks, improving the quality of electrolytic manganese and reducing the circulation quantity of newly-prepared electrolyte.
The technical scheme adopted for solving the technical problems is as follows: a process method for producing an electrolytic manganese metal electrolysis section, comprising:
s1, in a chemical combination section, manganese ore is uniformly ground, leached with acid to prepare liquid, deironing and removing heavy metals to prepare neutral liquid, and the neutral liquid is stored in a liquid pool;
s2, pumping neutral liquid in the liquid pool to an external circulation liquid storage tank;
s3, pumping the neutral liquid in the external circulation liquid storage tank to an electrolytic tank;
s4, the neutral solution entering the electrolytic tank is directionally distributed and moved under the action of current of the cathode plate and anode plate, manganese is precipitated in the cathode region, meanwhile, the neutral solution passes through the diaphragm bag and enters the anode region, sulfuric acid is produced in the anode region, then overflows out of the electrolytic tank through an anolyte overflow pipe at the lower part of the anode chamber, flows into an anolyte pool after entering an anolyte main flow pipe, and is sent to a chemical combination section to leach manganese ore;
s5, an electrolyte external circulation system is communicated with the position of the cathode region of the electrolytic tank, and one end, far away from the electrolytic tank, of the electrolyte external circulation system is communicated with an external circulation liquid storage tank.
Further, the electrolyte external circulation system includes:
the liquid inlet of the filtering and purifying unit is communicated with the cathode region of the electrolytic tank;
the liquid inlet of the cooling tank is communicated with the liquid outlet of the filtering and purifying unit, and the liquid outlet of the cooling tank is communicated with the liquid inlet of the external circulation liquid storage tank.
Further, the electrolyte external circulation system further includes:
a first flow control valve provided on a pipe connecting the cooling tank and the external circulation tank;
the second flow control valve is arranged at the liquid inlet of the external circulation liquid storage tank;
the manganese content analyzer is provided with a sampling mechanism, and the sampling mechanism is arranged in the outer circulation liquid storage tank and is used for detecting the manganese content of the solution in the outer circulation liquid storage tank on line.
Further, the electrolyte external circulation system further includes:
a first flow rate regulating valve provided on the electrolytic cell and the pipeline of the filtration and purification device;
the second flow regulating valve is arranged on the pipeline of the electrolytic tank and the external circulation liquid storage tank;
the liquid level meter is arranged on the electrolytic tank;
and the liquid level controller is in signal connection with the first flow regulating valve, the second flow regulating valve and the liquid level meter so as to monitor and effectively control the amount of electrolyte in the electrolytic tank in real time.
Further, the filtering and purifying unit includes:
a transfer tank communicated with the electrolytic tank;
and the solid-liquid separation device is arranged in the transfer tank and is used for realizing solid-liquid separation of the electrolyte.
Further, the electrolyte external circulation system further comprises a slag tank, wherein a feed inlet of the slag tank is connected with a slag outlet of the transfer tank, and the slag tank is used for collecting waste residues of the filtering and purifying unit and further recycling the waste residues.
Further, the electrolyte external circulation system further comprises a self-flowing device, and the self-flowing device can realize liquid cooling in a self-flowing mode.
Further, a stirring device is arranged in the transit tank.
The beneficial effects of the application are as follows: the application provides a process method for producing an electrolytic manganese metal electrolysis section, which solves the following problems:
1. through the external circulation of the electrolyte in the cathode region of the electrolytic tank, the newly-prepared electrolyte and the circulating liquid are returned to the working section of the electrolytic tank according to the proportion, so that the manganese content of the newly-prepared electrolyte is improved, the volume of the carrier liquid (H2O) in the working section is reduced, and the running cost is reduced.
2. Through the external circulation of the electrolyte in the cathode region of the electrolytic tank, filter pressing equipment is additionally arranged in the circulation process to purify the tank liquid, thereby delaying the problem of blockage of a diaphragm bag and prolonging the period of electrolytic tank cleaning to more than 18 days.
3. The electrolyte in the cathode region of the electrolytic tank is circulated outside and leaves the electromagnetic field interference region of the electrolytic tank, an online analysis and detection instrument is additionally arranged, and three process control parameters in the electrolytic tank are indirectly controlled by controlling the PH value, the manganese content and the temperature of the recycled electrolyte, so that the basic requirements of stable indexes, automatic process control and even intelligent control are met.
4. The cathode region electrolyte of the electrolytic tank is externally circulated, so that the aim of homogenizing indexes (PH and tank manganese) of each tank in an integral electrolytic plant is fulfilled, the circulating quantity of each tank is controlled by equipment facilities, the indexes of each tank are nearly close to the level of the integral tank manganese, the process control level is improved, and the recovery rate of electrolytic metal is improved.
In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is an overall schematic diagram of a process for producing an electrolytic manganese metal electrolysis section in accordance with the present application;
FIG. 2 is a schematic diagram of the external circulation principle of the electrolysis section of FIG. 1;
wherein, each reference sign in the figure:
1. a first flow control valve; 2. a second flow control valve; 3. a manganese content analyzer; 4. a first flow regulating valve; 5. a second flow regulating valve; 6. a liquid level gauge; 7. a slag bath; 8. and a stirring device.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
1-2, the application provides a process method for producing an electrolytic manganese metal electrolysis working section, which comprises the following steps of S1, in a chemical combination working section, manganese ore is uniformly ground, leached with acid, and then iron and heavy metals are removed, and then neutral liquid is prepared and stored in a liquid pool;
s2, pumping neutral liquid in the liquid pool to an external circulation liquid storage tank;
s3, pumping the neutral liquid in the external circulation liquid storage tank to an electrolytic tank;
s4, the neutral solution entering the electrolytic tank is directionally distributed and moved under the action of current of the cathode plate and anode plate, manganese is precipitated (hydrogen evolution) in the cathode region, meanwhile, the neutral solution passes through a diaphragm bag and enters the anode region, sulfuric acid (manganese dioxide) is produced in the anode region, then overflows out of the electrolytic tank through an anolyte overflow pipe at the lower part of the anode chamber, flows into an anolyte pool after entering an anolyte main flow pipe, and is sent to a chemical combination section to leach manganese ore;
s5, communicating an electrolyte external circulation system at the position of the cathode region of the electrolytic tank, wherein one end of the electrolyte external circulation system, which is far away from the electrolytic tank, is communicated with an external circulation liquid storage tank;
the electrolyte external circulation system includes:
the liquid inlet of the filtering and purifying unit is communicated with the cathode region of the electrolytic cell;
the liquid inlet of the cooling tank is communicated with the liquid outlet of the filtering and purifying unit, and the liquid outlet of the cooling tank is communicated with the liquid inlet of the external circulation liquid storage tank;
through the technical scheme, the electrolyte of the manganese electrolytic tank is purified, cooled and recycled outside the tank, so that the impurity of the electrolyte entering the tank is reduced, the labor intensity of workers is reduced, the period of cleaning the tank is prolonged, the internal circulation amount of the electrolyte in the tank is accelerated, and the yield of electrolytic manganese veneers and the yield of the tank are improved;
the electrolyte external circulation system further includes:
the first flow control valve 1 is arranged on a pipeline which is communicated with the cooling tank and the external circulation liquid storage tank;
a second flow control valve 2, the second flow control valve 2 is arranged at a liquid inlet of the external circulation liquid storage tank;
the manganese content analyzer 3 is provided with a sampling mechanism, and the sampling mechanism is arranged in the external circulation liquid storage tank and is used for detecting the manganese content of the solution in the external circulation liquid storage tank on line;
the first flow control valve 1 and the second flow control valve 2 are connected with the manganese content analyzer 3 in a signal manner, so that the manganese content in the liquid storage tank can be monitored in real time, the amounts of recycled electrolyte and newly-prepared electrolyte entering the liquid storage tank can be conveniently controlled, and the manganese content and the like of the electrolyte in the electrolytic tank are more stable;
the electrolyte external circulation system further includes:
a first flow rate adjustment valve 4, the first flow rate adjustment valve 4 being provided on a pipeline between the electrolytic cell and the filtration purification device;
a second flow regulating valve 5, the second flow regulating valve 5 is arranged on the pipeline of the electrolytic bath and the external circulation liquid storage tank;
the liquid level meter 6 is arranged on the electrolytic tank;
the liquid level controller is a control unit of the liquid level meter 6 and is in signal connection with the first flow regulating valve 4, the second flow regulating valve 5 and the liquid level meter 6 so as to monitor and effectively control the amount of electrolyte in the electrolytic tank in real time;
the filtration and purification unit comprises:
a transfer tank communicated with the electrolytic tank;
the solid-liquid separation device is arranged in the transfer tank and is used for realizing solid-liquid separation of the electrolyte;
the electrolyte external circulation system also comprises a slag tank 7, wherein a feed inlet of the slag tank 7 is connected with a slag outlet of the transfer tank and is used for collecting the waste slag of the filtering and purifying unit and further recycling the waste slag;
the electrolyte external circulation system also comprises a self-flowing device, and the self-flowing device can realize liquid cooling in a self-flowing mode;
a stirring device 8 is arranged in the transit tank;
working principle:
the technical scheme comprises the steps of conveying and controlling the flow of the discharged electrolyte, filtering, purifying and cooling, and proportioning and recycling the recycled electrolyte and the newly-prepared electrolyte.
In the transportation and flow control of the discharged electrolyte, the discharged liquid of the electrolytic tank is pumped out from the bottom of the electrolytic tank and then enters the subsequent filtering, purifying and cooling steps, meanwhile, the flow control of the discharged electrolyte of each electrolytic tank and the flow control of the inlet liquid of the electrolytic tank are matched, the necessary condition is that the liquid level in the electrolytic tank is stable, the liquid level in the electrolytic tank is further realized by controlling the flow of the inlet liquid in each electrolytic tank to be slightly larger than the flow of the discharged electrolyte all the time, a circulating liquid discharge pipeline is additionally arranged at the bottom of the electrolytic tank, and a regulating valve is arranged on the circulating liquid discharge pipeline and used for regulating the liquid level of the electrolytic tank;
in the filtering, purifying and cooling process, the discharged electrolyte realizes liquid purification through the fine filter cloth of the filter press, reduces the impurity of the electrolyte entering the tank, prolongs the period of electrolytic cleaning tank, reduces the labor intensity of workers, reduces tank-viewing personnel, improves the quality of electrolytic manganese, and in addition, carries out liquid cooling through self-flow after being filtered by the plate-and-frame filter press, and improves the cooling efficiency;
in the proportion mixing and recycling process of the recycled electrolyte and the new electrolyte, the flow of the recycled electrolyte and the flow of the new electrolyte are timely regulated according to the condition of the manganese content in the transit tank obtained by the manganese content analyzer 3, so that the recycled electrolyte and the new electrolyte are reasonably mixed and then sent into the electrolytic tank for recycling, and the stability of the manganese content in the electrolytic tank is further realized; in addition, the pH value in each tank is different, the pH value in the transfer liquid tank tends to be stable after the neutralization of acid and alkali by homogenization in the transfer process, and the process is also a process of circularly adjusting the pH value, namely, the manganese and the pH value in the tank are stabilized by accelerating the internal circulation quantity of electrolyte in the tank, so that the yield of the electrolytic manganese single plate and the yield of the tank are improved.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A process method for producing an electrolytic manganese metal electrolysis section is characterized by comprising the following steps: comprising the following steps:
s1, in a chemical combination section, manganese ore is uniformly ground, leached with acid to prepare liquid, deironing and removing heavy metals to prepare neutral liquid, and the neutral liquid is stored in a liquid pool;
s2, pumping neutral liquid in the liquid pool to an external circulation liquid storage tank;
s3, pumping the neutral liquid in the external circulation liquid storage tank to an electrolytic tank;
s4, the neutral solution entering the electrolytic tank is directionally distributed and moved under the action of current of the cathode plate and anode plate, manganese is precipitated in the cathode region, meanwhile, the neutral solution passes through the diaphragm bag and enters the anode region, sulfuric acid is produced in the anode region, then overflows out of the electrolytic tank through an anolyte overflow pipe at the lower part of the anode chamber, flows into an anolyte pool after entering an anolyte main flow pipe, and is sent to a chemical combination section to leach manganese ore;
s5, an electrolyte external circulation system is communicated with the position of the cathode region of the electrolytic tank, and one end, far away from the electrolytic tank, of the electrolyte external circulation system is communicated with an external circulation liquid storage tank.
2. A process for producing electrolytic manganese metal electrolysis sections according to claim 1, characterized in that: the electrolyte external circulation system includes:
the liquid inlet of the filtering and purifying unit is communicated with the cathode region of the electrolytic tank;
the liquid inlet of the cooling tank is communicated with the liquid outlet of the filtering and purifying unit, and the liquid outlet of the cooling tank is communicated with the liquid inlet of the external circulation liquid storage tank.
3. A process for producing an electrolytic manganese metal electrolysis section according to claim 2, wherein: the electrolyte external circulation system further includes:
a first flow control valve provided on a pipe connecting the cooling tank and the external circulation tank;
the second flow control valve is arranged at the liquid inlet of the external circulation liquid storage tank;
the manganese content analyzer is provided with a sampling mechanism, and the sampling mechanism is arranged in the outer circulation liquid storage tank and is used for detecting the manganese content of the solution in the outer circulation liquid storage tank on line.
4. A process for producing an electrolytic manganese metal electrolysis section according to claim 3, wherein: the electrolyte external circulation system further includes:
a first flow rate regulating valve provided on the electrolytic cell and the pipeline of the filtration and purification device;
the second flow regulating valve is arranged on the pipeline of the electrolytic tank and the external circulation liquid storage tank;
the liquid level meter is arranged on the electrolytic tank;
and the liquid level controller is in signal connection with the first flow regulating valve, the second flow regulating valve and the liquid level meter so as to monitor and effectively control the amount of electrolyte in the electrolytic tank in real time.
5. A process for producing electrolytic manganese metal electrolysis sections according to claim 4, wherein: the filtering and purifying unit comprises:
a transfer tank communicated with the electrolytic tank;
and the solid-liquid separation device is arranged in the transfer tank and is used for realizing solid-liquid separation of the electrolyte.
6. A process for producing electrolytic manganese metal electrolysis sections according to claim 5, wherein: the electrolyte external circulation system further comprises a slag tank, wherein a feed inlet of the slag tank is connected with a slag outlet of the transfer tank and is used for collecting waste residues of the filtering and purifying unit and further recycling the waste residues.
7. A process for producing electrolytic manganese metal electrolysis sections according to claim 6, wherein: the electrolyte external circulation system further comprises a self-flowing device, and the self-flowing device can realize liquid cooling in a self-flowing mode.
8. A process for producing electrolytic manganese metal electrolysis sections according to claim 5, wherein: and a stirring device is arranged in the transit tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310848278.3A CN117089890A (en) | 2023-07-12 | 2023-07-12 | Technological method for producing electrolytic manganese metal electrolysis section |
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