Method and equipment for stably solidifying electrolytic manganese residues through magnesium residues

Abstract

The invention discloses a method and equipment for stably solidifying electrolytic manganese residues through magnesium residues, and the equipment comprises an electric heating constant-temperature drying machine, a particle pulverizer, a metal shell, a constant-temperature aging mechanism and an aging warehouse. The upper end of the left side of the electric heating constant-temperature drying machine is fixedly provided with a first conveyor; a second conveyor is fixedly installed between the lower end of the right side of the electric heating constant-temperature drying machine and the left end of the top of the particle pulverizer, and a third conveyor is fixedly installed between the lower end of the right side of the particle pulverizer and the left end of the top of the metal shell. A third conveyor is fixedly mounted between the lower end of the right side of the particle crusher and the left end of the top of the metal shell, and a stirring motor is fixedly mounted at the lower end of the front surface of the metal shell. The industrial solid waste magnesium slag is used for innocent treatment of the electrolytic manganese slag, so that the innocent treatment cost of the electrolytic manganese slag is effectively reduced, and the innocent treatment process of the electrolytic manganese slag is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of harmless treatment of solid wastes, and in particular to a method and equipment for stabilizing and solidifying electrolytic manganese slag by magnesium slag. Background Art

[0002] In recent years, with the rapid development of the electrolytic manganese industry, electrolytic manganese slag, a by-product of industrial manganese production, has been accumulating. According to relevant statistics, 10-12 tons of electrolytic manganese slag will be produced for every ton of manganese produced by electrolysis. The electrolytic manganese slag contains excessive ammonia nitrogen and heavy metal ions (such as Mn2+, Pb2+, Cu2+, Ni2+ and Zn2+), which has a high risk of leaching during long-term storage, posing a huge threat to human health and the ecological environment.

[0003] Based on the current situation of the increasing stock of electrolytic manganese slag, some scholars have tried to directly use the electrolytic manganese slag without harmless treatment in cement production and add it to concrete as a mineral admixture. However, the high alkaline environment (PH = 12-13) generated by cement hydration will cause the NH 4+ It escapes into the air in the form of ammonia, causing environmental pollution. At the same time, due to the irritation of ammonia, it will greatly affect the construction of on-site personnel. Therefore, before the reuse of electrolytic manganese slag, harmless treatment is an indispensable step.

[0004] At present, stabilization / solidification technology (S / S) has become one of the main ways to harmlessly treat electrolytic manganese slag. The stabilization / solidification materials of electrolytic manganese slag include alkaline materials, phosphates and other chemical reagents. When alkaline materials are used as curing agents, Mn in electrolytic manganese slag 2+ It will turn into insoluble precipitates such as Mn(OH)2, MnO2, Mn3O4 and MnO·OH, while NH 4+ It will escape in the form of ammonia. The main reactions are as follows: Mn 2+ +2OH - →Mn(OH)2↓

[0005] 2Mn(OH)2+O 2 →2MnO·OH+2OH - 2Mn(OH)2+O 2 →2MnO2+2H2O

[0006] 6Mn(OH)2+O 2 →2Mn3O4+6H2O

[0007] NH4 + +OH - →NH3↑+H2O

[0008] In the phosphate system, Mn 2+and NH 4+ It can be solidified / stabilized into Mn(OH)2, Mn5(PO4)2(OH)4, Mn3(PO4)2·3H2O and NH4MgPO4·6H2O. The main reactions are as follows:

[0009] 5Mn 2+ +2PO 3- 4+4OH - →Mn5(PO4)2(OH)4↓

[0010] 3Mn 2+ +2PO 3- 4+3H2O→Mn3(PO4)2·3H2O↓

[0011] NH 4+ +Mg 2+ +PO 3- 4+6H2O→NH4MgPO4·6H2O↓

[0012] After using one or more of quicklime, calcium oxide, phosphate, magnesium oxide and sodium bicarbonate to treat electrolytic manganese slag, the leaching concentration of manganese ions and ammonia nitrogen will be greatly reduced. However, using these materials for the stabilization / solidification of electrolytic manganese slag will still incur high processing costs, hindering the resource recycling of electrolytic manganese slag. Therefore, it is necessary to research and develop an efficient and economical alkaline curing agent to ensure the long-term stable storage of EMR and avoid secondary pollution.

[0013] Generally, depending on the magnesium ore, the production of 1 ton of magnesium will produce 8-20 tons of magnesium slag, and with the development of the magnesium smelting industry, its emissions will increase year by year. However, the utilization rate of magnesium slag is very low. The magnesium slag discharged by many magnesium plants is piled up as waste. The magnesium slag piled in the open air is in the form of fine powder after natural decomposition. The median particle size of the magnesium slag placed for a long time is 15-16μm, and the particles with a size range of 1-10μm account for about 40% of the volume fraction. These tiny particles will produce harmful dust, which pollutes the environment and greatly affects human health. In addition, the main chemical components of magnesium slag are calcium oxide, silicon dioxide, magnesium oxide, 2CaO·SiO2, etc. Therefore, the leaching solution of magnesium slag is highly alkaline (PH>12). The random dumping of magnesium slag is likely to cause land hardening and salinization, threatening the growth of crops and affecting the normal use of cultivated land.

[0014] In view of the current situation that most of the existing harmless treatment methods have problems such as high energy consumption, easy to cause secondary pollution, high cost, long processing time, and complex process, if high-alkalinity magnesium slag can be used in the stabilization / solidification process of electrolytic manganese slag, a low-cost, simple process, environmentally friendly and harmless treatment method that can effectively fix manganese ions in electrolytic manganese slag and remove ammonia nitrogen can be developed, which can greatly reduce the cost of harmless treatment of electrolytic manganese slag and promote the reuse of electrolytic manganese slag. Summary of the invention

[0015] The object of the present invention is to provide a method and equipment for stabilizing and solidifying electrolytic manganese slag by magnesium slag.

[0016] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for stabilizing and solidifying electrolytic manganese slag by magnesium slag, comprising an electric constant temperature dryer, a particle crusher, a metal shell, a constant temperature storage mechanism and a storage warehouse, wherein a first conveyor is fixedly installed at the upper end of the left side of the electric constant temperature dryer, a second conveyor is fixedly installed between the lower end of the right side of the electric constant temperature dryer and the left end of the top of the particle crusher, a third conveyor is fixedly installed between the lower end of the right side of the particle crusher and the left end of the top of the metal shell, a stirring motor is fixedly installed at the lower end of the front surface of the metal shell, and the output end of the stirring motor is fixedly installed. A stirring shaft is fixedly installed, the back side of the stirring shaft is movably connected to the lower end of the inner cavity of the metal shell through a bearing, a wedge-shaped plow is fixedly connected to the surface of the stirring shaft, a water mist generating mechanism is arranged at the upper end of the metal shell, a discharge valve is fixedly installed at the bottom of the metal shell, a fourth conveyor is fixedly installed at the bottom of the outer surface of the metal shell, a fifth conveyor is fixedly installed at the upper end of the right side of the storage warehouse, a constant temperature storage mechanism is arranged between the upper end of the fourth conveyor and the right end of the fifth conveyor, and an ammonia treatment mechanism is arranged between the upper end of the right side of the metal shell and the upper end of the right side of the constant temperature storage mechanism.

[0017] As a preferred embodiment, the water mist generating mechanism includes a booster pump, the left side of the booster pump is fixedly installed on the upper end of the right side of the outer surface of the metal shell, the input end of the booster pump is fixedly installed with a tap water pipe, the output end of the booster pump is fixedly installed with a high-pressure explosion-proof hose, and a water mist nozzle is fixedly installed between the upper end of the high-pressure explosion-proof hose and the top of the inner cavity of the metal shell.

[0018] As a preferred embodiment, the constant temperature storage mechanism includes an insulation shell, the upper end of the back side of the insulation shell is fixedly installed on the upper end of the fourth conveyor, and the lower end of the left side of the insulation shell is fixedly installed on the right end of the fifth conveyor. The ammonia treatment mechanism includes a negative pressure pump, the left side of the negative pressure pump is fixedly installed on the middle end of the right side of the outer surface of the insulation shell, an ammonia discharge pipe is fixedly installed between the input end of the negative pressure pump and the upper end of the right side of the insulation shell and the upper end of the right side of the metal shell, control valves are fixedly installed at both ends of the top of the ammonia discharge pipe, and a discharge pipe is fixedly installed at the output end of the negative pressure pump.

[0019] As a preferred solution, a temperature controller is fixedly installed on the upper end of the front surface of the heat-insulating shell, a discharge door is movably connected to the upper end of the left side of the heat-insulating shell through a hinge, a containing mesh plate is fixedly connected to the middle end of the inner cavity of the heat-insulating shell, a partition is fixedly connected to the lower end of the inner cavity of the heat-insulating shell, an air inlet valve is fixedly installed on the surface of the partition through a pipeline, an electric heating wire is fixedly installed on the bottom of the partition, air inlet fans are fixedly installed at both ends of the bottom of the heat-insulating shell, and a temperature sensor is fixedly installed on the top of the inner cavity of the heat-insulating shell.

[0020] As a preferred embodiment, a method for stabilizing and solidifying electrolytic manganese slag with magnesium slag comprises the following steps:

[0021] A. Drying and crushing: The electrolytic manganese slag to be treated is conveyed to the inside of the electric constant temperature dryer through the first conveyor for drying, and then the dried electrolytic manganese slag is conveyed to the particle crusher through the second conveyor for crushing, thereby obtaining electrolytic manganese slag particles;

[0022] B. Water mist stirring: while conveying the dried and crushed electrolytic manganese slag particles to the inside of the metal shell through the third conveyor, a corresponding proportion of magnesium slag is added to the inside of the metal shell, and the stirring motor can drive the stirring shaft and the wedge-shaped plow to mix and stir the electrolytic manganese slag and the magnesium slag, and the water mist generating mechanism can wet the material inside the metal shell to obtain a mixed material, and at the same time, the ammonia generated during the stirring process can be discharged through the ammonia treatment mechanism for treatment;

[0023] C. Constant temperature storage: The mixed material obtained after water mist stirring is conveyed to the interior of the constant temperature storage mechanism through the fourth conveyor for reaction, so as to remove most of the ammonia nitrogen and solidify the manganese ions. At the same time, the ammonia generated during the reaction can be discharged again through the ammonia treatment mechanism for treatment;

[0024] D. Natural aging: The mixed material after constant temperature aging is transported to the interior of the aging warehouse through the fifth conveyor for aging to obtain harmless electrolytic manganese slag.

[0025] As a preferred solution, the drying temperature is 60-80° C., the drying time is 9-12 hours, and the electrolytic manganese slag particles after crushing are less than 2 mm.

[0026] As a preferred solution, the amount of magnesium slag added is 5-20% of the amount of electrolytic manganese slag added.

[0027] As a preferred solution, the moisture content of the mixed material is 5-15%, and the mixing and stirring time is 15-30 minutes.

[0028] As a preferred embodiment, the reaction temperature is controlled at 60-95°C and the reaction time is 1h-3h.

[0029] As a preferred solution, the natural aging time is 12-48 hours.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention adopts industrial solid waste magnesium slag for harmless treatment of electrolytic manganese slag, thereby effectively reducing the harmless treatment cost of electrolytic manganese slag and simplifying the harmless treatment process of electrolytic manganese slag.

[0032] 2. The present invention wets the material by spraying water mist during the mixing process, thereby preventing the electrolytic manganese slag from agglomerating and allowing the electrolytic manganese slag and magnesium slag to be fully mixed and contacted, thereby effectively improving the harmless treatment effect of the electrolytic manganese slag.

[0033] 3. The present invention can solidify manganese ions and remove most of ammonia by transporting the stirred and moistened mixed material to a constant temperature storage mechanism for reaction while maintaining a low moisture content, thereby effectively saving water resources and reducing the generation of industrial wastewater.

[0034] 4. The present invention uses an ammonia treatment mechanism to discharge and treat the ammonia generated during the treatment process, which can effectively prevent the leakage of ammonia. In addition, personnel can add a water washing and acid washing method at the end of the ammonia treatment mechanism to treat the ammonia, and the ammonia can be efficiently recycled.

[0035] 5. The harmless treatment method for electrolytic manganese slag of the present invention is relatively simple, easy to operate, and has low cost and energy consumption. After treatment by this method, most of the ammonia nitrogen in the electrolytic manganese slag is removed and the manganese ions are solidified. The manganese slag treated by this method is finally in a dry state, which is convenient to transport and can be widely used in the field of building materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a stereogram of the present invention;

[0037] Figure 2It is another perspective stereogram of the present invention;

[0038] Figure 3 It is a schematic diagram of the cross-sectional structure of the right side of the metal shell of the present invention;

[0039] Figure 4 It is a front cross-sectional structural schematic diagram of the constant temperature storage mechanism of the present invention.

[0040] In the figure: 1. first conveyor; 2. electric constant temperature dryer; 3. second conveyor; 4. particle crusher; 5. third conveyor; 6. metal shell; 7. fourth conveyor; 8. constant temperature storage mechanism; 801. insulation shell; 802. temperature controller; 803. discharge door; 804. holding mesh plate; 805. partition; 806. air inlet valve; 807. electric heating wire; 808. air inlet fan; 809. temperature sensor; 9. fifth conveyor; 10. storage warehouse; 11. ammonia treatment mechanism; 111. negative pressure pump; 112. ammonia discharge pipe; 12. water mist generating mechanism; 121. booster pump; 122. high pressure explosion-proof hose; 123. water mist nozzle; 13. stirring motor; 14. discharge valve; 15. wedge-shaped plow; 16. stirring shaft. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0043] Embodiment 1:

[0044] See also Figure 1-Figure 4As shown, the present invention provides a device for stabilizing and solidifying electrolytic manganese slag with magnesium slag, comprising an electric constant temperature dryer 2, a particle crusher 4, a metal shell 6, a constant temperature storage mechanism 8 and a storage warehouse 10, a first conveyor 1 is fixedly installed at the upper end of the left side of the electric constant temperature dryer 2, a second conveyor 3 is fixedly installed between the lower end of the right side of the electric constant temperature dryer 2 and the left end of the top of the particle crusher 4, a third conveyor 5 is fixedly installed between the lower end of the right side of the particle crusher 4 and the left end of the top of the metal shell 6, a stirring motor 13 is fixedly installed at the lower end of the front surface of the metal shell 6, and a stirring shaft is fixedly installed at the output end of the stirring motor 13 16, the back side of the stirring shaft 16 is movably connected to the lower end of the inner cavity of the metal shell 6 through a bearing, a wedge-shaped plow 15 is fixedly connected to the surface of the stirring shaft 16, a water mist generating mechanism 12 is arranged at the upper end of the metal shell 6, a discharge valve 14 is fixedly installed at the bottom of the metal shell 6, a fourth conveyor 7 is fixedly installed at the bottom of the outer surface of the metal shell 6, a fifth conveyor 9 is fixedly installed at the upper end of the right side of the storage warehouse 10, a constant temperature storage mechanism 8 is arranged between the upper end of the fourth conveyor 7 and the right end of the fifth conveyor 9, and an ammonia treatment mechanism 11 is arranged between the upper end of the right side of the metal shell 6 and the upper end of the right side of the constant temperature storage mechanism 8.

[0045] In the present technical solution, by using industrial solid waste magnesium slag for harmless treatment of electrolytic manganese slag, the harmless treatment cost of electrolytic manganese slag is effectively reduced, and the harmless treatment process of electrolytic manganese slag is simplified. By spraying water mist to moisten the material during the stirring process of the mixed material, the agglomeration of the electrolytic manganese slag can be prevented, and the electrolytic manganese slag and the magnesium slag can be fully mixed and contacted, which effectively improves the harmless treatment effect of the electrolytic manganese slag. By transporting the stirred and moistened mixed material to the constant temperature storage mechanism 8 for reaction while maintaining a low moisture content, the manganese ions can be solidified and most of the ammonia can be removed, and at the same time, the effective Water resources are saved and the generation of industrial wastewater is reduced. By adopting the ammonia treatment mechanism 11 to discharge and treat the ammonia generated in the treatment process, the leakage of ammonia can be effectively prevented. Moreover, personnel can treat the ammonia by adding a water washing and acid washing method at the end of the ammonia treatment mechanism 11, and the ammonia can be efficiently recycled. Since the overall harmless treatment method for electrolytic manganese slag is relatively simple, easy to operate, and low in cost and energy consumption, after being treated by the method, most of the ammonia nitrogen in the electrolytic manganese slag is removed and the manganese ions are solidified. The manganese slag treated by the method is finally in a dry state, which is convenient to transport and can be widely used in the field of building materials.

[0046] A method for stabilizing and solidifying electrolytic manganese slag with magnesium slag, the method comprising the following steps:

[0047] A. Drying and crushing: The electrolytic manganese slag to be treated is conveyed to the inside of the electric constant temperature dryer 2 through the first conveyor 1 for drying, the drying temperature is 60°C, and the drying time is 12 hours. Then, the dried electrolytic manganese slag is conveyed to the particle crusher 4 through the second conveyor 3 for crushing, thereby obtaining electrolytic manganese slag particles. The crushed electrolytic manganese slag particles are less than 2 mm;

[0048] B. Water mist stirring: while conveying the dried and crushed electrolytic manganese slag particles to the inside of the metal shell 6 via the third conveyor 5, a corresponding proportion of magnesium slag is added to the inside of the metal shell 6, and the amount of magnesium slag added is 15% of the amount of electrolytic manganese slag added, and the stirring motor 13 can drive the stirring shaft 16 and the wedge-shaped plow 15 to mix and stir the electrolytic manganese slag and the magnesium slag, and the mixing time is 18 minutes, and the water mist generating mechanism 12 can wet the material inside the metal shell 6 to obtain a mixed material, and the moisture content of the mixed material is 15%, and at the same time, the ammonia generated during the stirring process can be discharged through the ammonia treatment mechanism 11 for treatment;

[0049] C. Constant temperature storage: The mixed material obtained after water mist stirring is conveyed to the interior of the constant temperature storage mechanism 8 through the fourth conveyor 7 for reaction to remove most of the ammonia nitrogen and solidify the manganese ions. The reaction temperature is controlled at 60° C. and the reaction time is 3 hours. At the same time, the ammonia generated during the reaction can be discharged again through the ammonia treatment mechanism 11 for treatment;

[0050] D. Natural aging: The mixed material after constant temperature aging is conveyed to the interior of the aging warehouse 10 through the fifth conveyor 9 for aging. The natural aging time is 12 hours, and harmless electrolytic manganese slag is obtained.

[0051] Embodiment 2:

[0052] Based on the first embodiment, the present invention is as follows Figure 1-Figure 4As shown, the water mist generating mechanism 12 includes a boosting pump 121, the left side of the boosting pump 121 is fixedly installed on the upper end of the right side of the outer surface of the metal shell 6, the input end of the boosting pump 121 is fixedly installed with a tap water pipe, the output end of the boosting pump 121 is fixedly installed with a high-pressure explosion-proof hose 122, and a water mist nozzle 123 is fixedly installed between the upper end of the high-pressure explosion-proof hose 122 and the top of the inner cavity of the metal shell 6, the constant temperature display mechanism 8 includes an insulation shell 801, the upper end of the back side of the insulation shell 801 is fixedly installed on the upper end of the fourth conveyor 7, and the lower end of the left side of the insulation shell 801 is fixedly installed on the right end of the fifth conveyor 9, and the ammonia treatment mechanism 11 includes a negative pressure pump 111, the left side of the negative pressure pump 111 is fixedly installed on the middle end of the right side of the outer surface of the insulation shell 801, and the input end of the negative pressure pump 111 is connected to the right side of the insulation shell 801. An ammonia discharge pipe 112 is fixedly installed between the upper end of the side and the upper end of the right side of the metal shell 6, control valves are fixedly installed at both ends of the top of the ammonia discharge pipe 112, a discharge pipe is fixedly installed at the output end of the negative pressure pump 111, a temperature controller 802 is fixedly installed on the upper end of the front surface of the insulation shell 801, a discharge door 803 is movably connected to the upper end of the left side of the insulation shell 801 through a hinge, a holding mesh plate 804 is fixedly connected to the middle end of the inner cavity of the insulation shell 801, a partition 805 is fixedly connected to the lower end of the inner cavity of the insulation shell 801, an air inlet valve 806 is fixedly installed on the surface of the partition 805 through a pipeline, a heating wire 807 is fixedly installed at the bottom of the partition 805, an air inlet fan 808 is fixedly installed at both ends of the bottom of the insulation shell 801, and a temperature sensor 809 is fixedly installed on the top of the inner cavity of the insulation shell 801.

[0053] In the present technical solution, after the mixed material enters the interior of the constant temperature storage mechanism 8, the air inlet valve 806 is opened and the control valve on the ammonia discharge pipe 112 is closed, and the electric heating wire 807 and the air inlet fan 808 are started to work, which can drive the outside air to pass through the electric heating wire 807 for effective heating and temperature rise, and then blow it to the bottom of the mixed material through the air inlet valve 806 and the holding mesh plate 804, so that the quickly blown air can effectively dry the mixed material, and at the same time, the temperature sensor 809 can be used to keep the mixed material. The ambient temperature data inside the thermal shell 801 is transmitted to the thermostat 802 in real time. When the ambient temperature reaches the preset value of the thermostat 802, the thermostat 802 will control the heating wire 807 and the air inlet fan 808 to stop working, and control the air inlet valve 806 to close. After the mixed material is left for a period of time, the control valve is opened and the negative pressure pump 111 is operated, and the ammonia inside the thermal insulation shell 801 can be extracted through the ammonia discharge pipe 112 and transported through the discharge pipe, thereby completing the constant temperature aging operation of the mixed material.

[0054] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A device for stabilizing and solidifying electrolytic manganese slag with magnesium slag, comprising an electric constant temperature dryer (2), a particle crusher (4), a metal shell (6), a constant temperature storage mechanism (8) and a storage warehouse (10), characterized in that: A first conveyor (1) is fixedly mounted on the upper end of the left side of the electric constant temperature dryer (2); a second conveyor (3) is fixedly mounted between the lower end of the right side of the electric constant temperature dryer (2) and the left end of the top of the particle crusher (4); a third conveyor (5) is fixedly mounted between the lower end of the right side of the particle crusher (4) and the left end of the top of the metal shell (6); a stirring motor (13) is fixedly mounted on the lower end of the front surface of the metal shell (6); a stirring shaft (16) is fixedly mounted on the output end of the stirring motor (13); the back of the stirring shaft (16) is movably connected to the lower end of the inner cavity of the metal shell (6) through a bearing; A wedge-shaped plow (15) is fixedly connected to the surface of the mixing shaft (16); a water mist generating mechanism (12) is arranged at the upper end of the metal shell (6); a discharge valve (14) is fixedly installed at the bottom of the metal shell (6); a fourth conveyor (7) is fixedly installed at the bottom of the outer surface of the metal shell (6); a fifth conveyor (9) is fixedly installed at the upper end of the right side of the storage warehouse (10); a constant temperature storage mechanism (8) is arranged between the upper end of the fourth conveyor (7) and the right end of the fifth conveyor (9); and an ammonia treatment mechanism (11) is arranged between the upper end of the right side of the metal shell (6) and the upper end of the right side of the constant temperature storage mechanism (8).

2. The device for stabilizing and solidifying electrolytic manganese slag by magnesium slag according to claim 1, characterized in that: The water mist generating mechanism (12) comprises a booster pump (121), the left side of the booster pump (121) is fixedly mounted on the upper end of the right side of the outer surface of the metal shell (6), the input end of the booster pump (121) is fixedly mounted with a tap water pipe, the output end of the booster pump (121) is fixedly mounted with a high-pressure explosion-proof hose (122), and a water mist nozzle (123) is fixedly mounted between the upper end of the high-pressure explosion-proof hose (122) and the top of the inner cavity of the metal shell (6).

3. The device for stabilizing and solidifying electrolytic manganese slag by magnesium slag according to claim 1, characterized in that: The constant temperature storage mechanism (8) includes an insulation shell (801), the upper end of the back side of the insulation shell (801) is fixedly installed on the upper end of the fourth conveyor (7), and the lower end of the left side of the insulation shell (801) is fixedly installed on the right end of the fifth conveyor (9). The ammonia treatment mechanism (11) includes a negative pressure pump (111), the left side of the negative pressure pump (111) is fixedly installed on the middle end of the right side of the outer surface of the insulation shell (801), an ammonia discharge pipe (112) is fixedly installed between the input end of the negative pressure pump (111) and the upper end of the right side of the insulation shell (801) and the upper end of the right side of the metal shell (6), control valves are fixedly installed at both ends of the top of the ammonia discharge pipe (112), and a discharge pipe is fixedly installed at the output end of the negative pressure pump (111).

4. The device for stabilizing and solidifying electrolytic manganese slag by magnesium slag according to claim 3, characterized in that: A temperature controller (802) is fixedly installed on the upper end of the front surface of the heat-insulating shell (801); a discharge door (803) is movably connected to the upper end of the left side of the heat-insulating shell (801) via a hinge; a holding mesh plate (804) is fixedly connected to the middle end of the inner cavity of the heat-insulating shell (801); a partition (805) is fixedly connected to the lower end of the inner cavity of the heat-insulating shell (801); an air inlet valve (806) is fixedly installed on the surface of the partition (805) via a pipeline; a heating wire (807) is fixedly installed on the bottom of the partition (805); air inlet fans (808) are fixedly installed at both ends of the bottom of the heat-insulating shell (801); and a temperature sensor (809) is fixedly installed on the top of the inner cavity of the heat-insulating shell (801).

5. A method for stabilizing and solidifying electrolytic manganese slag with magnesium slag, characterized in that: The device for stabilizing and solidifying electrolytic manganese slag with magnesium slag according to any one of claims 1 to 4 comprises the following steps: A. Drying and crushing: The electrolytic manganese slag to be treated is conveyed to the inside of an electric constant temperature dryer (2) via a first conveyor (1) for drying, and then the dried electrolytic manganese slag is conveyed to a particle crusher (4) via a second conveyor (3) for crushing, thereby obtaining electrolytic manganese slag particles; B. Water mist stirring: while the dried and crushed electrolytic manganese slag particles are conveyed to the inside of the metal shell (6) via the third conveyor (5), a corresponding proportion of magnesium slag is added to the inside of the metal shell (6), and the stirring motor (13) can drive the stirring shaft (16) and the wedge-shaped plow (15) to mix and stir the electrolytic manganese slag and the magnesium slag, and the water mist generating mechanism (12) can wet the material inside the metal shell (6) to obtain a mixed material, and at the same time, the ammonia generated during the stirring process can be discharged through the ammonia processing mechanism (11) for treatment; C. Constant temperature storage: The mixed material obtained after water mist stirring is conveyed to the interior of the constant temperature storage mechanism (8) via the fourth conveyor (7) for reaction, so as to remove most of the ammonia nitrogen and solidify the manganese ions. At the same time, the ammonia gas generated during the reaction can be discharged again through the ammonia gas treatment mechanism (11) for treatment; D. Natural aging: The mixed material after constant temperature aging is transported to the interior of the aging warehouse (10) via the fifth conveyor (9) for aging, thereby obtaining harmless electrolytic manganese slag.

6. The method for stabilizing and solidifying electrolytic manganese slag using magnesium slag according to claim 5, characterized in that: The drying temperature is 60-80° C., the drying time is 9-12 hours, and the electrolytic manganese slag particles after crushing are less than 2 mm.

7. The method for stabilizing and solidifying electrolytic manganese slag using magnesium slag according to claim 5, characterized in that: The added amount of the magnesium slag is 5-20% of the added amount of the electrolytic manganese slag.

8. The method for stabilizing and solidifying electrolytic manganese slag with magnesium slag according to claim 5, characterized in that: The moisture content of the mixed material is 5-15%, and the mixing and stirring time is 15-30 minutes.

9. The method for stabilizing and solidifying electrolytic manganese slag using magnesium slag according to claim 5, characterized in that: The reaction temperature is controlled at 60-95°C and the reaction time is 1h-3h.

10. The method for stabilizing and solidifying electrolytic manganese slag with magnesium slag according to claim 5, characterized in that: The natural aging time is 12-48 hours.

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