Harmless treatment system for electrolytic manganese residues
By designing a harmless treatment system for electrolytic manganese slag, using backwash filter press, silt machine, double-shaft mixer and ammonia absorber, we can solve the poor reaction uniformity, low stability and cost in electrolytic manganese slag treatment. High-quality problems achieve efficient and stable harmless treatment effect.
Patent Information
- Application Number
- CN202421224426.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In the prior art, the harmless treatment of electrolytic manganese slag has problems such as poor reaction uniformity, low stability and high disposal cost, and the pH value of the product cannot be effectively controlled.
A harmless treatment system for electrolytic manganese slag is designed, including manganese slag pretreatment system, activator pretreatment system, pH callback pretreatment system, treatment agent pretreatment system, reaction system and recycling system, and is filtered by backwashing and pressing. The linkage of equipment such as machines, silt machines, dual-axis mixing machines and ammonia absorbers can realize the crushing of manganese slag, uniform mixing reaction and ammonia absorption.
The uniform treatment of manganese slag is achieved, the reaction temperature and chemical use are reduced, the treatment effect and stability are improved, the pH requirements of Class I solid waste are met, the impact of manganese slag on the environment is reduced, and the treatment cost is reduced.
Smart Images
Figure CN222519496U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of solid waste treatment and environmental protection application, and particularly relates to a harmless treatment system for electrolytic manganese slag. Background Art
[0002] Electrolytic manganese slag is an industrial waste slag produced in the production process of electrolytic manganese industry. Each ton of electrolytic manganese product produces 6 to 10 tons of manganese slag, and the cumulative production of electrolytic manganese slag has exceeded 100 million tons. Fresh electrolytic manganese slag is neutral and blocky, with a moisture content of 20 to 30%, a specific gravity of 1.3 to 1.5 g / cm3, and a certain viscosity. It belongs to Class II general industrial solid waste. There are many types of substances in manganese slag, and the chemical composition is complex. It not only contains manganese and ammonia nitrogen, but also may contain heavy metals such as Ni, Co, and Pb due to differences in mineralization reasons in various places. If it is discarded at will or landfilled in an irregular manner, the leachate of electrolytic manganese slag will penetrate into the surrounding water system, which will have an unignorable impact on the natural environment around the slag yard. In the prior art, when quicklime is used to render manganese slag harmless, the amount of quicklime added is relatively high, exceeding 10%, and the reaction temperature is relatively high, at 150-300°C, resulting in high costs, poor reaction uniformity, and low stability. At the same time, the pH value of the product is not adjusted, and the pH value of the final product exceeds 12, which does not meet the pH range required for Class I solid waste.
[0003] Therefore, it is imperative to develop a harmless treatment system for electrolytic manganese slag with stable process and controllable cost. The key to the treatment of electrolytic manganese slag is the crushing of manganese slag, the uniform mixing reaction of the treatment agent and manganese slag, and the absorption of ammonia. However, there is no precedent for the process engineering case of harmless disposal of electrolytic manganese slag using a backwash filter press-crusher-double-shaft mixer-ammonia absorber system. Utility Model Content
[0004] The purpose of the utility model is to provide a harmless treatment system for electrolytic manganese slag, thereby solving the problems of poor reaction uniformity, low stability and high disposal cost. The specific technical solution is as follows:
[0005] A harmless treatment system for electrolytic manganese slag, comprising: a manganese slag pretreatment system, an activator pretreatment system, a pH adjustment agent pretreatment system, a treatment agent pretreatment system, a reaction system and a recovery system, wherein the manganese slag pretreatment system, the activator pretreatment system, the pH adjustment agent pretreatment system, and the treatment agent pretreatment system are respectively connected to the reaction system, and the reaction system is connected to the recovery system;
[0006] The manganese slag pretreatment system comprises: a mortar pump, a backwash filter press, a first silo, a weighing scale, a belt conveyor and a soil powder machine, wherein the mortar pump is connected to the backwash filter press; the backwash filter press is connected to the first silo; the first silo is connected to the weighing scale, and the weighing scale is connected to the soil powder machine via a belt conveyor;
[0007] The activator pretreatment system comprises: a first pressure pump, a first stirring tank and a first metering pump, wherein the first pressure pump is connected to the first stirring tank, and the first stirring tank is connected to the first metering pump;
[0008] The pH adjustment agent pretreatment system comprises: a second pressure pump, a second stirring tank and a second metering pump, wherein the second pressure pump is connected to the second stirring tank, and the second stirring tank is connected to the second metering pump;
[0009] The treatment agent pretreatment system comprises: a crusher, a Raymond mill, a second silo and a spiral scale, wherein the crusher is connected to the Raymond mill, the Raymond mill is connected to the second silo, and the second silo is connected to the spiral scale;
[0010] The reaction system is a double-shaft mixer, in which an atomizer and a gas detector are provided;
[0011] The recovery system comprises: a receiving hopper, an ammonia absorber and an ammonia water tank, wherein the receiving hopper is connected to the double-shaft mixer, and the ammonia water tank is connected to the double-shaft mixer through the ammonia absorber;
[0012] The pulverizer in the manganese slag pretreatment system is connected to the double-shaft mixer; the first metering pump in the activator pretreatment system is connected to the atomizer; the second metering pump in the pH adjustment agent pretreatment system is connected to the atomizer; the spiral scale in the treatment agent pretreatment system is connected to the double-shaft mixer through a pipeline.
[0013] Furthermore, the mortar pump is connected to the backwash filter press through a pipeline.
[0014] Furthermore, the weighing scale is arranged at the bottom of the first silo.
[0015] Furthermore, the first pressure pump is connected to the first stirring tank through a pipeline, and the first stirring tank is connected to the first metering pump through a pipeline.
[0016] Furthermore, the second pressure pump is connected to the second stirring tank through a pipeline, and the second stirring tank is connected to the second metering pump through a pipeline.
[0017] Furthermore, a discharge valve is provided at the bottom of the second silo, and the second silo is connected to the spiral scale through the discharge valve.
[0018] Furthermore, the atomizer is a high-pressure sprayer.
[0019] Furthermore, the bottom of the ammonia water tank is connected to the workshop through a pipeline.
[0020] Compared with the existing technology, the utility model has the following beneficial effects:
[0021] 1. The manganese slag pretreatment system in the utility model can realize the recovery of part of manganese and ammonia nitrogen in manganese slag, and obtain fine manganese slag powder, which reduces the difficulty of later treatment of manganese slag and strengthens the treatment effect of manganese slag. The backwash filter press can wash and recover more than 50% of manganese and ammonia nitrogen in manganese slag into the electrolytic manganese production system, and the powder machine crushes the manganese slag, breaking through the problems of wall sticking, material jamming and small amount when crushing manganese slag by other equipment, which is energy-saving and efficient.
[0022] 2. The activator pretreatment system in the utility model can provide an activator for the reaction, and the activator can stimulate the reaction activity of manganese slag. The alkaline environment provided by the treatment agent can realize the form transformation of soluble manganese in manganese slag, alkalize and decompose ammonia nitrogen, and reduce the reaction temperature to 30°C-100°C. The amount of reagents used is small, the treatment effect is stable, the reaction temperature is low, and the energy consumption is low.
[0023] 3. The pH adjustment agent pretreatment system in the utility model can provide a pH adjustment agent for the reaction. The pH adjustment agent can solve the problem of high alkalinity of manganese slag after process treatment, and achieve the pH range required by a class of solid waste by adjusting the pH value.
[0024] 4. The treatment agent pretreatment system in the utility model can provide treatment agents for the reaction to better remove manganese ions and ammonia nitrogen. The on-site grinding method of the Raymond mill is conducive to the storage of raw materials and reduces procurement costs. The fresh grinding and use ensures that the particle size is below 100 meshes, which ensures the quality while maintaining the good reaction activity of the treatment agent, reduces the use of reagents, and reduces the alkalinity of manganese slag. The unloading valve and the spiral scale are used for quantitative feeding, which realizes the accurate and automatic addition of reagents, simple operation for employees and reasonable design.
[0025] 5. The atomizer in the utility model can realize the dissolution and atomization of the activator and the pH adjuster. The atomization addition method of the activator and the pH adjuster has a better material dispersion effect and solves the problems of poor reaction uniformity and low stability.
[0026] 6. In the utility model, a double-shaft mixer is used as a manganese slag harmless reaction vessel, with high mixing uniformity and short reaction time. All reactions are completed in this reactor, which is beneficial to the absorption of ammonia and on-site control.
[0027] 7. The ammonia absorber in the utility model can recover the ammonia gas in the reaction process to produce ammonia water, thereby reducing environmental pollution, protecting the physical and mental health of employees, and realizing the recycling of resources, further reducing the cost of manganese slag treatment.
[0028] 8. The utility model creatively links the backwashing-crushing-mixing-ammonia absorption links to achieve harmless treatment of electrolytic manganese slag, with reasonable design, simple structure, automatic operation and low disposal cost. After harmless treatment, manganese slag meets the requirements of the first category of general industrial solid waste, reduces the impact of manganese slag on the surrounding environment, meets the requirements of electrolytic manganese clean production specifications, and realizes green, sustainable and high-quality development of the manganese industry. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.
[0030] Figure 1 The utility model is a structural schematic diagram of a harmless treatment system for electrolytic manganese slag.
[0031] Description of main reference numerals:
[0032] 1- mortar pump, 2- backwash filter press, 3- first silo, 4- weighing scale, 5- belt conveyor, 6- soil powder machine, 7- first pressure pump, 8- first mixing tank, 9- first metering pump, 10- atomizer, 11- crusher, 12- Raymond mill, 13- second silo, 14- discharge valve, 15- spiral scale, 16- gas detector, 17- double-shaft mixer, 18- second pressure pump, 19- second mixing tank, 20- second metering pump, 21- receiving hopper, 22- ammonia absorber, 23- ammonia water tank. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0035] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.
[0037] Example 1
[0038] like Figure 1 As shown, a harmless treatment system for electrolytic manganese slag includes: a manganese slag pretreatment system, an activator pretreatment system, a pH adjustment agent pretreatment system, a treatment agent pretreatment system, a reaction system and a recovery system, wherein the manganese slag pretreatment system, the activator pretreatment system, the pH adjustment agent pretreatment system, and the treatment agent pretreatment system are respectively connected to the reaction system, and the reaction system is connected to the recovery system. The utility model creatively links the backwashing-crushing-mixing-ammonia absorption links to achieve harmless treatment of electrolytic manganese slag, with reasonable design, simple structure, automatic operation, and low disposal cost. After harmless treatment, the manganese slag meets the requirements of the first category of general industrial solid waste, reduces the impact of manganese slag on the surrounding environment, meets the requirements of the electrolytic manganese clean production specifications, and realizes the green, sustainable, and high-quality development of the manganese industry.
[0039] The manganese slag pretreatment system includes: a mortar pump 1, a backwash filter press 2, a first silo 3, a weighing scale 4, a belt conveyor 5 and a pulverizer 6. The mortar pump 1 is connected to the backwash filter press 2 through a pipeline; the backwash filter press 2 is connected to the first silo 3; the first silo 3 is connected to the weighing scale 4, the weighing scale 4 is arranged at the bottom of the first silo 3, and the weighing scale 4 is connected to the pulverizer 6 through the belt conveyor 5. The manganese slag pretreatment system can realize the recovery of part of the manganese and ammonia nitrogen in the manganese slag, and obtain fine powder of manganese slag, which reduces the difficulty of the later treatment of manganese slag and strengthens the treatment effect of manganese slag. Among them, the backwash filter press can wash and recover more than 50% of the manganese and ammonia nitrogen in the manganese slag into the electrolytic manganese production system, and the pulverizer crushes the manganese slag, breaking through the problems of wall sticking, material jamming and small amount when other equipment crushes the manganese slag, and is energy-saving and efficient.
[0040] The activator pretreatment system includes: a first pressure pump 7, a first stirring tank 8 and a first metering pump 9, wherein the first pressure pump 7 is connected to the first stirring tank 8 through a pipeline, and the first stirring tank 8 is connected to the first metering pump 9 through a pipeline. The activator pretreatment system can provide an activator for the reaction, and the activator can stimulate the reaction activity of the manganese slag, and provide an alkaline environment through the treatment agent to achieve the form transformation of soluble manganese in the manganese slag, alkalize and decompose ammonia nitrogen, and reduce the reaction temperature to 30°C-100°C, with a small amount of reagents used, a stable treatment effect, a low reaction temperature, and low energy consumption.
[0041] The pH adjustment agent pretreatment system includes: a second pressure pump 18, a second stirring tank 19 and a second metering pump 20. The second pressure pump 18 is connected to the second stirring tank 19 through a pipeline, and the second stirring tank 19 is connected to the second metering pump 20 through a pipeline. The pH adjustment agent pretreatment system can provide a pH adjustment agent for the reaction. The pH adjustment agent can solve the problem of high alkalinity of manganese slag after process treatment, and achieve the pH range required by Class I solid waste through pH adjustment.
[0042] The treatment agent pretreatment system includes: a crusher 11, a Raymond mill 12, a second silo 13 and a spiral scale 15. The crusher 11 is connected to the Raymond mill 12, the Raymond mill 12 is connected to the second silo 13, a discharge valve 14 is provided at the bottom of the second silo 13, and the second silo 13 is connected to the spiral scale 15 through the discharge valve 14. The treatment agent pretreatment system can provide treatment agents for the reaction to better remove manganese ions and ammonia nitrogen. The on-site grinding method of the Raymond mill is conducive to the storage of raw materials and reduces procurement costs. The fresh grinding and use ensures that the particle size reaches less than 100 meshes, while ensuring the quality and maintaining the good reaction activity of the treatment agent, reducing the use of reagents and reducing the alkalinity of manganese slag. The quantitative feeding through the discharge valve and spiral scale realizes the accurate automatic addition of reagents, simple operation for employees and reasonable design.
[0043] The reaction system is a double-shaft mixer 17, which is equipped with an atomizer 10 and a gas detector 16; the atomizer 10 is a high-pressure sprayer. The double-shaft mixer is used as a manganese slag harmless reaction container, with high mixing uniformity and short reaction time. All reactions are completed in this reactor, which is conducive to the absorption of ammonia and on-site control. The atomizer can realize the dissolution and atomization of the activator and the pH adjustment agent. The atomization addition of the activator and the pH adjuster has a better material dispersion effect, solving the problems of poor reaction uniformity and low stability.
[0044] The recovery system includes: a receiving hopper 21, an ammonia absorber 22 and an ammonia water tank 23. The receiving hopper 21 is connected to the double-shaft mixer 17. The ammonia water tank 23 is connected to the double-shaft mixer 17 through the ammonia absorber 22. The bottom of the ammonia water tank 23 is connected to the workshop through a pipeline for production use. The ammonia absorber can recycle ammonia gas in the reaction process to produce ammonia water, reduce environmental pollution, protect the physical and mental health of employees, and realize resource recycling, further reducing the cost of manganese slag treatment.
[0045] The pulverizer 6 in the manganese slag pretreatment system is connected to the double-shaft mixer 17; the first metering pump 9 in the activator pretreatment system is connected to the atomizer 10; the second metering pump 20 in the pH adjustment agent pretreatment system is connected to the atomizer 10; the spiral scale 15 in the treatment agent pretreatment system is connected to the double-shaft mixer 17 through a pipeline. The manganese slag, activator and treatment agent can be added simultaneously to make the reaction more thorough.
[0046] Next, the working principle and reaction steps in this embodiment are described in detail to enable those skilled in the art to better understand the present invention:
[0047] (1) The slag washing water is pumped into the backwash filter press 2 through the mortar pump 1, and the electrolytic manganese slag is washed online to achieve harm reduction of the manganese slag. The first silo 3 is used to store the harm-reduced manganese slag to be crushed, and the manganese slag is crushed to less than 2 mm by the pulverizer 6, and the manganese slag powder is obtained and enters the double-shaft mixer 17 for reaction.
[0048] (2) The first booster pump 7 draws clean water at a concentration of 1%-10% to dissolve the activator in the first stirring tank 8, and the first metering pump 9 accurately meters the amount of the activator to be used. After being atomized by the atomizer 10, it is evenly sprayed into the double-shaft mixer 17 to enhance the reaction activity of the manganese slag.
[0049] (3) The treatment agent is crushed on site using a crusher 11, and then ground by a Raymond mill 12 to a particle size less than 100 mesh, and then stored in a second silo 13. The treatment agent enters a screw scale 15 through a discharge valve 14 at the bottom of the second silo 13 and is quantitatively fed to a double-shaft mixer to participate in the manganese slag harmless treatment reaction.
[0050] (4) The manganese slag powder, activator and treatment agent in steps (1), (2) and (3) are added into a double-shaft mixer 17 in a certain amount and mixed evenly and reacted thoroughly for 30 min to 180 min. The gas detector 16 monitors the residual ammonia concentration in the system in real time. When the required concentration is met, proceed to the next step.
[0051] (5) When the residual ammonia concentration in the system reaches below 100 ppm, a pH adjustment agent is sprayed into the twin-shaft mixer 17 to adjust the pH value of the manganese slag to 6-9, that is, the second pressure pump 18 draws clean water at a concentration of 1%-10% to dissolve the pH adjustment agent in the second stirring tank 19, and the second metering pump 20 accurately measures the amount of the pH adjustment agent used, and the atomizer 10 atomizes it and sprays it evenly.
[0052] (6) Synchronously, the ammonia gas released by the manganese slag is recovered by using the ammonia absorber 22, and the ammonia water concentration is enriched to 3%-10% and pumped into the ammonia water tank 23 for storage and returned to production for use. After the manganese slag is harmlessly treated and qualified, it is discharged from the double-shaft mixer 17 through the material receiving head 21, and transported to the manganese slag storage silo by a belt conveyor for inspection, and discharged into the manganese slag warehouse after the inspection is qualified.
[0053] In summary, the present invention uses a novel method to solve many problems existing in the harmless treatment technology of electrolytic manganese slag. First, a backwash filter press 2 is used to recover manganese and ammonia resources in manganese slag online. Secondly, a pulverizer 6 is used to achieve efficient crushing of manganese slag. Finally, a double-shaft mixer 17 is used to achieve a uniform mixing reaction between manganese slag and a treatment agent, solid manganese and deammoniate. During the harmless treatment process, an ammonia absorber 22 is used to recover the ammonia gas released from the manganese slag. The invention solves many problems such as high disposal cost of electrolytic manganese slag, incomplete treatment, system water expansion, long treatment cycle, unstable effect, etc. The present invention can provide a harmless treatment system for manganese slag with reasonable design, simple structure, high degree of automation, low investment cost, strong economic applicability and stable treatment effect.
[0054] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A harmless treatment system for electrolytic manganese slag, characterized in that: include: A manganese slag pretreatment system, an activator pretreatment system, a pH adjustment agent pretreatment system, a treatment agent pretreatment system, a reaction system and a recovery system, wherein the manganese slag pretreatment system, the activator pretreatment system, the pH adjustment agent pretreatment system and the treatment agent pretreatment system are respectively connected to the reaction system, and the reaction system is connected to the recovery system; The manganese slag pretreatment system comprises: a mortar pump, a backwash filter press, a first silo, a weighing scale, a belt conveyor and a soil powder machine, wherein the mortar pump is connected to the backwash filter press; the backwash filter press is connected to the first silo; the first silo is connected to the weighing scale, and the weighing scale is connected to the soil powder machine via a belt conveyor; The activator pretreatment system comprises: a first pressure pump, a first stirring tank and a first metering pump, wherein the first pressure pump is connected to the first stirring tank, and the first stirring tank is connected to the first metering pump; The pH adjustment agent pretreatment system comprises: a second pressure pump, a second stirring tank and a second metering pump, wherein the second pressure pump is connected to the second stirring tank, and the second stirring tank is connected to the second metering pump; The treatment agent pretreatment system comprises: a crusher, a Raymond mill, a second silo and a spiral scale, wherein the crusher is connected to the Raymond mill, the Raymond mill is connected to the second silo, and the second silo is connected to the spiral scale; The reaction system is a double-shaft mixer, in which an atomizer and a gas detector are provided; The recovery system comprises: a receiving hopper, an ammonia absorber and an ammonia water tank, wherein the receiving hopper is connected to the double-shaft mixer, and the ammonia water tank is connected to the double-shaft mixer through the ammonia absorber; The pulverizer in the manganese slag pretreatment system is connected to the double-shaft mixer; the first metering pump in the activator pretreatment system is connected to the atomizer; the second metering pump in the pH adjustment agent pretreatment system is connected to the atomizer; the spiral scale in the treatment agent pretreatment system is connected to the double-shaft mixer through a pipeline.
2. The harmless treatment system for electrolytic manganese slag according to claim 1, characterized in that: The mortar pump is connected to the backwash filter press through a pipeline.
3. The harmless treatment system for electrolytic manganese slag according to claim 1, characterized in that: The weighing scale is arranged at the bottom of the first silo.
4. The harmless treatment system for electrolytic manganese slag according to claim 1, characterized in that: The first pressure pump is connected to the first stirring tank through a pipeline, and the first stirring tank is connected to the first metering pump through a pipeline.
5. The harmless treatment system for electrolytic manganese slag according to claim 1, characterized in that: The second pressure pump is connected to the second stirring tank through a pipeline, and the second stirring tank is connected to the second metering pump through a pipeline.
6. The harmless treatment system for electrolytic manganese slag according to claim 1, characterized in that: A discharge valve is provided at the bottom of the second silo, and the second silo is connected to a spiral scale through the discharge valve.
7. The harmless treatment system for electrolytic manganese slag according to claim 1, characterized in that: The atomizer is a high-pressure sprayer.
8. The harmless treatment system for electrolytic manganese slag according to claim 1, characterized in that: The bottom of the ammonia water tank is connected to the workshop through a pipeline.