CN217869026U - Production system for jointly treating electrolytic manganese slag by adopting wet method and dry method - Google Patents
Production system for jointly treating electrolytic manganese slag by adopting wet method and dry method Download PDFInfo
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Abstract
The utility model provides a production system for jointly treating electrolytic manganese slag by adopting a wet method and a dry method, which belongs to the technical field of harmless treatment of solid waste and resource recycling and is used for solving the problem that the manganese slag is difficult to effectively treat harmlessly and utilize as resources in the prior art, and comprises a wet method unit and a dry method unit; the wet method unit comprises online countercurrent rinsing and filter pressing equipment; the dry method unit comprises a crushing reactor and a stirring and mixing reactor connected with an outlet of the crushing reactor; the online countercurrent rinsing and filter pressing equipment is provided with a clear water inlet, a washing liquid outlet and a washing slag outlet; the washing liquid outlet is connected with an electrolytic bath; and the washing slag outlet is connected with the crushing reactor. The utility model discloses valuable composition in the recoverable electrolytic manganese sediment, soluble manganese in the washing manganese sediment after the effective solidification wet process unit to effectively get rid of the ammonia nitrogen in the manganese sediment, realize the recycle of ammonia, lay the basis for the utilization of the manganese sediment of separating of "wet process + dry process" combined treatment.
Description
Technical Field
The utility model belongs to the technical field of solid waste innocent treatment and resource cyclic utilization, concretely relates to method for disposing electrolytic manganese slag by adopting 'wet hair and dry method' combined treatment.
Background
The electrolytic manganese slag is acidic waste slag generated after acid leaching, neutralization and filter pressing in the process of preparing metal manganese and oxides thereof by an electrolytic method. At present, most of electrolytic manganese slag is treated in an open-air stacking mode due to economic and technical reasons, and a large amount of leachate wastewater can be generated in the stacking process of the electrolytic manganese slag. The electrolytic manganese slag and the leachate wastewater contain a large amount of soluble manganese ions and ionic NH 4 + 、SO 4 2- Once the seepage-proofing measures of part of slag fields are improper, pollutants enter the environment, and the heavy metal pollution of surrounding soil, air and water resources can be caused, so that the human health is harmed.
To date, scholars at home and abroad are dealing with Mn in electrolytic manganese slag 2+ Curing and NH of 4 + The removal of-N was actively explored as follows: the researchers have developed chemical methods (CaO, phosphate + magnesium salt + carbonate and phosphogypsum), electrochemical methods (electric field strengthening and electrodynamic remediation), bioleaching, roasting and water washing, etc. in succession. Square root, optional root, etcThe cement has the effect of fixing the heavy metals in the electrolytic manganese slag. Chen Gongliang and the like adopt air stripping to recover NH in electrolytic manganese slag 3 N and a method for oxidation fixation of Mn. Du Bing and the like, and the soluble manganese in the manganese slag is recovered by using carbon dioxide and ammonia water. In addition, the electrolytic manganese slag can also be used for preparing building material products such as roadbed, autoclaved brick, autoclaved aerated concrete, glass ceramic, cement clinker, adsorbent, filler and the like.
In conclusion, the harmless treatment and resource utilization of the electrolytic manganese slag mainly aim at Mn 2+ Curing and NH 4 + -removal of N. Therefore, the treatment of the metal manganese ions and the ammonia nitrogen is the important factor in the harmless treatment and resource utilization of the electrolytic manganese slag. However, the electrolytic manganese slag is not easily and effectively treated by adopting a water washing (wet method), a simple stirring and mixing (dry method) with quick lime, a roasting or calcining method (pyrogenic method) and other technical routes for harmless treatment and resource utilization of the electrolytic manganese slag, and the problems of high cost, difficult industry bearing and the like or incomplete harmless effect and the like are caused, so that the electrolytic manganese slag treatment is not only a technical problem, but also an industrial problem of technical and economic interweaving. Therefore, how to treat and dispose the electrolytic manganese slag more conveniently and efficiently becomes a technical problem to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides an adopt "wet process + dry process" combined treatment electrolytic manganese sediment's production system has solved the problem that the manganese sediment is difficult to effective innocent treatment and utilization under the prior art.
The embodiment of the utility model discloses a realize through following technical scheme:
a production system for jointly treating electrolytic manganese slag by adopting a wet method and a dry method comprises a wet method unit and a dry method unit; the wet method unit comprises online countercurrent rinsing and filter pressing equipment; the dry method unit comprises a crushing reactor and a stirring and mixing reactor connected with an outlet of the crushing reactor; the online countercurrent rinsing and filter pressing equipment is provided with a clear water inlet, a washing liquid outlet and a washing slag outlet; the washing liquid outlet is connected with an electrolytic bath; the washing slag outlet is connected with the crushing reactor; the inlet of the crushing reactor is respectively connected with a first alkali material barrel and a dispersant barrel; quick lime or cement burning raw powder is arranged in the first alkali material barrel; silicate is arranged in the dispersant barrel.
Preferably, the stirring and mixing reactor is a rotating cylinder which is obliquely arranged; a stirring device is arranged in the rotary cylinder; the inner wall of the stirring mixing reactor is connected with a temperature sensor; and the outer wall of the stirring mixing reactor is provided with a heat-insulating layer.
Preferably, the stirring and mixing reactor is communicated with an air exhaust pipe.
Preferably, a toothed roll crushing device and a plurality of nozzles are arranged in the crushing reactor; the toothed roller crushing device consists of two upper rollers which are meshed with each other and two lower rollers which are meshed with each other; a crushing cavity is formed between the two upper rollers and the two lower rollers; the tooth part of the upper roller is larger than that of the lower roller; one end of each of the plurality of nozzles is connected with the first alkali bucket and the dispersant bucket; the other ends of the nozzles are aligned with the crushing cavity; the crushing reactor is provided with an air pumping hole.
Preferably, the washing liquid outlet is connected with the inlet of the concentration device; the outlet of the concentration device is connected with the electrolytic cell.
Preferably, the concentration device is an MVR apparatus or a membrane separation device.
Preferably, a liquid storage device is further arranged between the concentration equipment and the online countercurrent rinsing and filter pressing equipment; the washing liquid outlet is connected with the inlet of the liquid storage device; the first outlet of the liquid storage device is connected with the inlet of the detection unit; and a second outlet of the liquid storage device is connected with the concentration equipment.
Preferably, an inlet of the liquid storage device is communicated with a second alkali bucket; one or more of sodium carbonate, calcium oxide and sodium hydroxide are arranged in the second alkali material barrel.
Preferably, the device also comprises an aging bin; and the outlet of the stirring and mixing reactor is connected with the inlet of the aging bin.
Preferably, the device further comprises a screening device; the outlet of the aging bin is connected with the inlet of the screening device; the fine particle outlet of the screening device is connected with the inlet of the aging bin; and a large particle outlet of the screening device is connected with an inlet of the crushing reactor.
The utility model discloses technical scheme has following advantage and beneficial effect at least:
a. the online countercurrent rinsing and filter pressing equipment used in the fine chemical industry and the pharmaceutical industry is applied to the field of electrolytic manganese, so that heavy metal and ammonia nitrogen in electrolytic manganese slag are effectively removed by combining the multiple rinsing functions in wet processing with subsequent dry processing, the leaching toxicity of the manganese slag meets the I-type solid waste requirement, the electrolytic manganese slag belongs to general II-type solid waste, and the electrolytic manganese slag is changed from the II-type solid waste into the I-type solid waste by the wet and dry processing technology, so that the method is more environment-friendly and safe, the processing cost is low, and the whole process technology is simple and easy to implement;
b. after the leaching toxicity of the manganese slag meets the I-type solid waste requirement, the manganese slag can be further recycled, and the recycling field comprises but is not limited to: the cement-based solid waste landfill material is applied to the fields of cement substitute raw materials, wall material substitute raw materials, roadbed materials, mine pit filling materials and the like, or enters a common solid waste landfill for landfill disposal;
c. the alkaline materials, sodium carbonate, sodium hydroxide and other alkaline agents are used for replacing trace heavy metals in the electrolytic manganese slag, and the manganese carbonate which can be directly used as the electrolytic manganese raw material is prepared, so that the resource utilization of the heavy metals in the electrolytic manganese slag is realized.
d. The problems that a single electrolytic manganese enterprise is difficult to realize the system treatment of the produced electrolytic manganese slag in a low-cost and large-scale manner and is difficult to achieve harmless treatment and resource utilization are solved.
e. The temperature of the mixing reactor is controllable and keeps a certain micro negative pressure, and the ammonia-containing waste gas of one of the reaction products is taken away in time.
f. The crushing reactor is provided with the nozzle and the air suction opening on the basis of a conventional crusher, so that the function of the reactor is added to the crushing reactor, and the air suction opening can continuously suck the ammonia-containing waste gas produced by the reaction, so that the reaction is more thorough.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a production system for treating electrolytic manganese slag by a combination of a wet method and a dry method, which is provided in example 1;
FIG. 2 is a schematic diagram showing the operation of the crushing reactor in example 1;
an icon: 1-online counter-current rinsing and filter pressing equipment, 2-a liquid storage device, 21-a detection unit, 22-a second alkali bucket, 3-concentration equipment, 4-a crushing reactor, 41-a first alkali bucket, 42-a dispersant bucket, 5-a stirring and mixing reactor, 6-an aging bin, 7-a screening device, 8-an electrolytic tank, 9-an upper roller, 10-a lower roller, 11-a crushing cavity and 12-a nozzle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of this application is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and be operated is not to be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in the figure 1-2, the production system for jointly processing the electrolytic manganese slag by adopting the wet method and the dry method comprises a wet method unit and a dry method unit; the wet method unit comprises an online countercurrent rinsing and filter pressing device 1; the dry method unit comprises a crushing reactor 4 and a stirring and mixing reactor 5 connected with the outlet of the crushing reactor 4; the online countercurrent rinsing and filter pressing equipment 1 is provided with a clear water inlet, a washing liquid outlet and a washing slag outlet; the washing liquid outlet is connected with an electrolytic bath 8; the washing slag outlet is connected with the crushing reactor 4; the inlet of the crushing reactor 4 is respectively connected with a first alkali material barrel 41 and a dispersant barrel 42; the first alkali material barrel 41 is internally provided with calcined lime or cement calcined raw powder; the dispersant barrel 42 houses a silicate.
In the specific implementation process, the online countercurrent rinsing and filter pressing device 1 is the existing device, and the wet unit adopts a multiple rinsing method:
first online rinsing: carrying out filter pressing on the manganese ore powder acid leaching slurry by adopting an online countercurrent rinsing and filter pressing device 1 so as to realize solid-liquid separation, taking filter liquor after filter pressing as qualified electrolyte to enter an electrolytic workshop, and temporarily not discharging filter residues until the filter pressing is washed online for the first time; firstly, carrying out countercurrent washing on the manganese slag on the filter press by using 0.2-0.5 time of clear water of the slag to obtain filter residue I and washing liquid I, wherein the washing liquid I is used as qualified electrolyte to enter an electrolytic cell 8 of an electrolytic workshop.
And (3) second online rinsing: it should be noted that the filter pressing performance of different manganese residues is different, and some manganese residues (such as manganese residues with low iron content) can achieve the harmless treatment effect only through the steps of first online washing (wet method) and dry treatment unit; in some places, the manganese slag (such as manganese slag with high iron content) can be subjected to harmless treatment only by 2-3 times of online washing (wet method) and a dry treatment unit; therefore, the second online washing is an optional process, for example, the first online washing (wet method) + dry treatment unit can achieve the harmless treatment effect, and the second online washing can be omitted. Otherwise, the second on-line washing is needed, and the process can obtain better effect on the materials with poor filtering performance. The criteria for the harmlessness treatment are: whether the pollutants such as manganese, ammonia nitrogen and the like in the leachate of the slag meet the national I-type solid waste discharge index requirements is detected by a detection unit 21.
The washed filter residue enters a crushing reactor 4 for crushing and dispersing, in the crushing and dispersing process, 3-5% of alkaline materials of the residue are added into the filter residue through a first alkaline material barrel 41, 0.05-0.5% of dispersing agents are added into the filter residue through a dispersing agent barrel 42, and then the filter residue enters a mixing reactor 5.
In this embodiment, the stirring and mixing reactor 5 is a rotating cylinder disposed obliquely; a stirring device is arranged in the rotary cylinder; the inner wall of the stirring mixing reactor 5 is connected with a temperature sensor; and the outer wall of the stirring mixing reactor 5 is provided with a heat-insulating layer.
In this embodiment, the stirring and mixing reactor 5 is communicated with an air exhaust pipe.
In the specific implementation process, the mixing reactor 5 is a powerful stirring mixing reactor integrating stirring, mixing and heating reaction, and the power requirement, the revolution, the rotating direction and the energy transmission mode can be selected according to the work task; a stirring drum with certain inclination is driven by a toothed ring; a stirring tool driven by a gear box is driven by a standard motor with a V-belt or a standard motor of the V-belt; the material is rotated together with the mixing drum by the mixing drum, and at the same time, the stirrer rotating in the same direction at the centrifugal position generates a force capable of shearing the material, thereby generating a speed difference in a complicated flow. The scraper blade continuously peels off the materials still left at the bottom and the edge of the groove and sends the materials to the stirrer, and the optimal uniform stirring effect of the materials is realized. Because the rotary drum has a certain inclination, the rotary stirring drum brings the materials to the top, and the materials are peeled off from the inner wall by the scraping arm and fall downwards. Thus, the mixing in the up-and-down direction is well realized. While materials are mixed, the electrolytic manganese and alkaline materials generate solid-solid interface reaction, in order to ensure the reaction to be effectively carried out, the air exhaust pipe enables the mixing drum to maintain a certain micro negative pressure, and ammonia-containing waste gas of one of reaction products is taken away in time; in addition, a heating and heat-preserving system is arranged outside the mixing drum, the inner wall of the reactor is connected with a temperature sensor, the temperature in the mixing drum is controlled and guaranteed to be kept between 60 ℃ and 80 ℃, and the mixing time is 3-5min.
In this embodiment, the crushing reactor 4 is internally provided with a toothed roller crushing device and a plurality of nozzles 12; the toothed roller crushing device consists of two upper rollers 9 which are meshed with each other and two lower rollers 10 which are meshed with each other; a crushing cavity 11 is formed between the two upper rollers 9 and the two lower rollers 10; the tooth part of the upper roller 9 is larger than that of the lower roller 10; one end of the plurality of nozzles 12 is connected with the first alkali bucket 41 and the dispersant bucket 42; the other ends of the nozzles 12 are aligned with the crushing cavity 11; the crushing reactor 4 is provided with an air extraction opening.
In the concrete implementation process, go up roller 9 and be coarse broken, the tooth portion is great thick, and lower roll 10 is broken for the thin, and tooth portion is thin, goes up and forms broken chamber between roller 9 and the lower roll 10, sets up the manganese slag material curtain in the alkaline material uniform contact broken chamber of being convenient for of a plurality of nozzles 12 to this preliminary mixing and the reaction of realizing alkaline material and washing slag, and form and collect breakage, react in breaker of an organic whole. The alkaline materials are not only materials participating in the reaction, but also dispersing agents for avoiding secondary adhesion of the manganese slag in crushing, and the crushing effect is favorably improved. The reaction product (containing ammonia waste gas) can be taken away in time by arranging the air extraction opening, so that the reaction can be effectively carried out, and the reaction thoroughness is ensured.
In this embodiment, the washing liquid outlet is connected to the inlet of the concentration device 3; the outlet of the concentration device 3 is connected with the electrolytic bath 8.
In this embodiment, the concentration device 3 is an MVR device or a membrane separation device.
In the specific implementation process, the washing liquor I obtained in the first rinsing directly enters an electrolysis workshop on the premise that the water quantity of the system can be balanced; if the water in the system cannot be balanced, the concentrated product enters an electrolytic plant after Mn & lt 2+ & gt in the concentrated product is more than 30g/L by adopting an MVR device or membrane separation equipment through concentration.
In this embodiment, a liquid storage device 2 is further arranged between the concentration device 3 and the online countercurrent rinsing and filter-pressing device 1; the washing liquid outlet is connected with the inlet of the liquid storage device 2; a first outlet of the liquid storage device 2 is connected with an inlet of the detection unit 21; and a second outlet of the liquid storage device 2 is connected with the concentration equipment 3.
In this embodiment, an inlet of the liquid storage device 2 is communicated with a second alkali bucket 22; one or more of sodium carbonate, calcium oxide and sodium hydroxide are arranged in the second alkali bucket 22.
In the specific implementation process, during the second on-line washing, the filter residue I on the filter press is still washed by using 0.2-0.5 time of clear water of residue in a countercurrent way to obtain filter residue II and washing liquid II; adding alkaline materials (CaO/NaOH/Na 2CO3 and the like) in a second alkaline bucket 22 into the obtained washing liquid II, and adjusting the pH value of the system to be between 9 and 9.5;
chemical reaction 1: caO + H2O → Ca (OH) 2 ↓
Chemical reaction 2: ca (OH) 2+H2SO4 (residual acid) → CaSO 4. XH2O ↓
Chemical reaction 3: ca (OH) 2+ (NH 4) 2SO4 → CaSO 4. XH2O ↓ + NH3 ↓
Chemical reaction 4: ca (OH) 2+ MnSO4 (soluble high) → CaSO 4. XH2O ↓ + Mn (OH) 2 ↓
Chemical reaction 5: mnO2+ Mn2+ + OH- → MnO (OH) ↓ + H2O
The PH is adjusted to enable the reaction to be more thorough, and meanwhile, soluble manganese (MnSO 4) is converted into insoluble MnO (OH) ↓soas to recycle valuable components.
Then, performing solid-liquid separation to obtain a product I (high solid content) and a product II (low solid content), wherein the product I is a valuable component containing Mn (OH) 2, mnCO3 and the like, and can enter a chemical combination barrel and enter an electrolytic manganese production system; adding alkaline agents (CaO/Na 2CO3 and the like) into the product II to remove calcium and magnesium ions, adjusting the pH value of the system to 9-11 to enable calcium and magnesium precipitation products such as MgCO3, caCO3 and the like to be more stable, immediately carrying out solid-liquid separation to obtain a product III (with higher solid content) and a product IV, wherein the product III is a calcium and magnesium product containing MgCO3, caCO3 and the like, and mixing the product III with the filter residue II to enter a manganese residue dry treatment site. And the product IV is used as water for on-line washing for recycling.
In this embodiment, the device further comprises an aging bin 5; the outlet of the stirring and mixing reactor 5 is connected with the inlet of the aging bin 6.
In this embodiment, a screening device 7 is also included; the outlet of the aging bin 6 is connected with the inlet of the screening device 7; the fine particle outlet of the screening device 7 is connected with the inlet of the aging bin 6; the large particle outlet of the screening device 7 is connected with the inlet of the crushing reactor 4.
In the specific implementation process, the stirred and mixed material in the mixing reactor 5 enters an aging bin 6, an aging period is set according to 3-5 hours, the aged material immediately enters a screening device 7, the screened large-particle material (larger than 8mm material) enters a crushing reactor 4 for re-crushing, the screened small-particle material (smaller than 8mm material) enters an aging bin for aging, the aging period is set according to 24-72 hours, after the aging period is reached, the soluble Mn and NH4+ -N in the leachate obtained according to the method specified in the solid waste leaching toxicity leaching method-horizontal oscillation method (HJ 557) do not need to enter a low-temperature drying unit if the soluble Mn and NH4+ -N in the leachate meet the toxicity requirement of the solid waste leaching of the type I in the general industrial solid waste storage and landfill pollution control standard (GB 18599-2020), otherwise, the leachate needs to enter a low-temperature drying (deamination solidification) unit, and the obtained slag finally meets the toxicity requirement of the solid waste leaching of the type I.
In the specific implementation process, except that the waste gas generated by the aging bin and the low-temperature drying unit belongs to ammonia-containing waste gas with large air volume and low concentration, higher-concentration waste gas is generated in the processes of the crushing reaction equipment, the strong stirring and mixing reaction equipment, the stirring and conveying equipment and the like, and cold water (below 5 ℃) generated by a water chilling unit is firstly used for spraying and washing the higher-concentration waste gas to prepare ammonia water with the concentration of about 5-6% for recycling in a system; the low-concentration ammonia-containing waste gas after spraying and washing is converged with the large-air-volume low-concentration ammonia-containing waste gas generated by the aging warehouse, the low-temperature drying unit and the like, and then anode liquor containing dilute sulfuric acid generated in the production process of electrolytic manganese metal is washed and discharged after reaching the standard.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A production system for jointly treating electrolytic manganese slag by adopting a wet method and a dry method is characterized by comprising a wet method unit and a dry method unit; the wet method unit comprises online countercurrent rinsing and filter pressing equipment; the dry method unit comprises a crushing reactor and a stirring and mixing reactor connected with an outlet of the crushing reactor; the online countercurrent rinsing and filter pressing equipment is provided with a clear water inlet, a washing liquid outlet and a washing slag outlet; the washing liquid outlet is connected with an electrolytic bath; the washing slag outlet is connected with the crushing reactor; the inlet of the crushing reactor is respectively connected with a first alkali material barrel and a dispersant barrel; quick lime or cement burning raw powder is arranged in the first alkali material barrel; silicate is arranged in the dispersing agent barrel.
2. The production system for jointly processing electrolytic manganese residues by adopting the wet method and the dry method according to claim 1, wherein the stirring and mixing reactor is a rotating cylinder which is obliquely arranged; a stirring device is arranged in the rotary cylinder; the inner wall of the stirring mixing reactor is connected with a temperature sensor; and the outer wall of the stirring mixing reactor is provided with a heat-insulating layer.
3. The production system for jointly treating electrolytic manganese residues by adopting the wet method and the dry method according to claim 2, wherein the stirring and mixing reactor is communicated with an air exhaust pipe.
4. The production system for jointly treating electrolytic manganese slag by adopting the wet method and the dry method according to claim 1, wherein a toothed roller crushing device and a plurality of nozzles are arranged in the crushing reactor; the toothed roller crushing device consists of two upper rollers which are meshed with each other and two lower rollers which are meshed with each other; a crushing cavity is formed between the two upper rolls and the two lower rolls; the tooth part of the upper roller is larger than that of the lower roller; one end of each of the plurality of nozzles is connected with the first alkali bucket and the dispersing agent bucket; the other ends of the nozzles are aligned with the crushing cavity; the crushing reactor is provided with an air pumping hole.
5. The production system for jointly processing electrolytic manganese residues by adopting the wet method and the dry method according to any one of the claims 1 to 4, characterized in that the washing liquid outlet is connected with the inlet of a concentration device; the outlet of the concentration device is connected with the electrolytic cell.
6. The production system for jointly processing electrolytic manganese residues by adopting the wet method and the dry method according to claim 5, wherein the concentration equipment is an MVR device or membrane separation equipment.
7. The production system for jointly treating electrolytic manganese residues by adopting the wet method and the dry method according to claim 5, wherein a liquid storage device is further arranged between the concentration equipment and the online countercurrent rinsing and pressure filtering equipment; the washing liquid outlet is connected with the inlet of the liquid storage device; the first outlet of the liquid storage device is connected with the inlet of the detection unit; and a second outlet of the liquid storage device is connected with the concentration equipment.
8. The production system for jointly treating electrolytic manganese residues by adopting the wet method and the dry method according to claim 7, wherein an inlet of the liquid storage device is communicated with a second alkali bucket; one or more of sodium carbonate, calcium oxide and sodium hydroxide are arranged in the second alkali material barrel.
9. The production system for jointly processing electrolytic manganese residues by adopting the wet method and the dry method as claimed in claim 5, further comprising an aging bin; and the outlet of the stirring and mixing reactor is connected with the inlet of the aging bin.
10. The production system for jointly processing electrolytic manganese residues by adopting the wet method and the dry method according to claim 9, further comprising a screening device; the outlet of the aging bin is connected with the inlet of the screening device; the fine particle outlet of the screening device is connected with the inlet of the aging bin; and a large particle outlet of the screening device is connected with an inlet of the crushing reactor.
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| CN202222186665.9U CN217869026U (en) | 2022-08-18 | 2022-08-18 | Production system for jointly treating electrolytic manganese slag by adopting wet method and dry method |
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| CN202222186665.9U CN217869026U (en) | 2022-08-18 | 2022-08-18 | Production system for jointly treating electrolytic manganese slag by adopting wet method and dry method |
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