Method for treating sulfide in silicon-manganese alloy slag leaching process

Abstract

The invention discloses a method for treating sulfide in a silicon-manganese alloy slag leaching process. The method comprises the following steps: mixing the silicon-manganese slag and the anode slag in the electrolytic manganese production process according to a ratio, and pressing the mixture into powder by using a roller press. Then, anolyte generated in the electrolytic manganese production process is used for pulping leaching reaction, 93% concentrated sulfuric acid is added after the reaction is carried out for 1 hour, and then the reaction is carried out for 1-2 hours; finally, the slurry is conveyed to a filter pressing section for treatment, filtrate is recycled, and filter residues are transferred to a residue field for stockpiling pretreatment. The method has the beneficial effect that the resource waste is effectively reduced by recovering the manganese element in the silicon-manganese slag and the anode slag to the maximum extent. By eliminating hydrogen sulfide gas, the risk of environmental pollution is reduced, and the environmental protection requirement is met. Meanwhile, the waste treatment process is optimized, the overall treatment efficiency and economic benefits are improved, and the sustainable development concept is supported.

Description

Technical Field

[0001] The invention relates to the field of solid waste treatment, and in particular to a method for treating sulfides in a silicon-manganese alloy slag leaching process. Background Art

[0002] The production of silicon-manganese alloy adopts pyrometallurgical process, and silicon-manganese slag is inevitably produced in this process. These silicon-manganese slags usually contain 5%-10% manganese, and about 1 ton of silicon-manganese slag is produced for every ton of silicon-manganese alloy produced. Taking my country's pyrometallurgical industry as an example, the amount of silicon-manganese alloy produced each year exceeds 10 million tons, and the cumulative amount of silicon-manganese slag has reached hundreds of millions of tons. At present, the annual production capacity of silicon-manganese alloy production enterprises in my country has reached 300,000 tons, and 300,000 tons of silicon-manganese slag are produced. Due to its complex composition and structure, most of these silicon-manganese slags are stored as solid waste, and some are used in the building materials industry. They have not been effectively utilized. Improper treatment may also cause environmental pollution, increase environmental pressure and waste of resources.

[0003] Analysis shows that the total manganese content in silicon-manganese slag is 5%-10%. These manganese elements cannot be effectively utilized, resulting in a waste of resources. At the same time, the storage of anode slag not only occupies a large amount of land, but also causes environmental pollution. Therefore, the treatment and resource utilization of silicon-manganese slag has become a problem that the industry needs to solve urgently.

[0004] The existing technology for the treatment of silicon manganese slag is still insufficient. As a solid waste in the pyrometallurgical industry, long-term storage of silicon manganese slag not only causes serious pollution to the environment, but also wastes a lot of land and resources. There is currently no mature solution to deal with these wastes, making it a major problem restricting the development of the metallurgical industry. In addition, silicon manganese slag contains a variety of recyclable elemental components, and long-term storage violates the concept of sustainable development. In the existing technology, the generation of hydrogen sulfide gas is difficult to effectively eliminate under acidic conditions and is toxic, and this problem has not yet been effectively solved. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method for treating sulfides in the process of leaching silicon-manganese alloy slag.

[0006] The present invention is achieved through the following technical solutions: A method for treating sulfides in a silicon-manganese alloy slag leaching process of the present invention comprises the following steps: Crushing and drying: The silicon-manganese slag and the anode slag of the electrolytic system are processed separately. The silicon-manganese slag is rolled into powder by a roller press, and the anode slag is dried and ground to make both reach 80-120 mesh; Mixing: Evenly mix silicon manganese slag and anode slag in a ratio of 100:15-20 to obtain mixed slag; Pulping and leaching: The mixed slag and the anolyte produced by the electrolysis system are subjected to pulping and leaching reaction for 1-2 hours; Add concentrated sulfuric acid: After leaching reaction for 1-2 hours, add concentrated sulfuric acid at a ratio of 100:2-2.5 of silicon manganese slag to concentrated sulfuric acid, and react for another 1-2 hours. The sulfide in the silicon manganese slag reacts with sulfuric acid to generate hydrogen sulfide gas and sulfate; the concentration of the concentrated sulfuric acid is 93%; Sulfide treatment: With the anode liquid as a carrier, the hydrogen sulfide gas and manganese dioxide in the anode slag quickly come into contact, and a redox reaction occurs, converting hydrogen sulfide into elemental sulfur or low-valent sulfate, while the tetravalent manganese is reduced to divalent manganese; Filter pressing and recycling: After the reaction is complete, the slurry produced by the reaction is filter pressed, and the filtrate is returned to the liquid preparation workshop to prepare qualified neutral liquid for electrolysis in the electrolytic manganese process; the filter residue is transported to the slag yard for storage pretreatment to complete the treatment of sulfides in the silicon-manganese alloy slag leaching process.

[0007] The present invention provides an efficient and environmentally friendly sulfide treatment technology through the steps of crushing and drying, mixing, pulping and leaching, adding concentrated sulfuric acid, sulfide treatment, filter pressing and recycling. The method can effectively reduce the generation of hydrogen sulfide gas, ensure the safety and stability of the reaction process, and maximize the utilization of resources through the recovery of filtrate and pretreatment of filter residue.

[0008] Furthermore, the treatment of the silicon-manganese slag specifically comprises the following steps: Collection and pretreatment: Collect silicon-manganese slag from the production line or storage site, conduct preliminary inspection, remove large impurities and visible stones or metal impurities, and use screens or magnetic separation equipment to clean up larger impurities; Roller pressing treatment: send the silicon manganese slag into the roller press, adjust the operating parameters of the roller press to 300-500MPa roller pressure, 5-10 rpm roller speed, press it into powder to ensure that the powder particle size meets the requirement of 100 mesh; Drying treatment: put the rolled silicon-manganese slag powder into a rotary dryer or belt dryer, set the drying temperature in the range of 100-150℃, and reduce the moisture content to below 5%; Screening treatment: Use a vibrating screen or rotary screening equipment to screen the dried silicon-manganese slag to ensure that the powder particle size meets the requirements; perform secondary roller pressing on the screened silicon-manganese slag powder that does not meet the requirements; Storage and labeling: Store the treated silicomanganese slag in a dry and well-ventilated warehouse in sealed containers or moisture-proof bags, and mark the source and processing date of the silicomanganese slag on the storage container for traceability and management.

[0009] The above steps further refine the treatment process of silicon manganese slag, including collection and pretreatment, roller pressing, drying, screening, storage and labeling. Through these specific steps, the efficiency and accuracy of silicon manganese slag treatment are improved, the quality and particle size control of raw materials during the treatment process are ensured, and the storage and management process is optimized.

[0010] Furthermore, the anode slag drying and grinding process specifically comprises the following steps: Collection and pretreatment: Collect anode slag from electrolytic manganese production line or storage place, conduct preliminary inspection on the collected anode slag, remove large impurities and visible stones or metal impurities, and use screen or magnetic separation equipment to clean up larger impurities; Drying treatment: Place the anode slag evenly in a rotary dryer for drying, and set the drying temperature to 120°C to ensure that the moisture content is reduced to less than 5%; Grinding treatment: The dried anode slag is fed into a ball mill for grinding treatment. The operating parameters of the ball mill are set to a speed of 50 rpm, a grinding medium loading of 30% of the total weight of the material, and a ratio of abrasive to material of 1:1 to ensure that the powder is ground to a particle size of 100 mesh; Screening treatment: Use a vibrating screen to screen the ground anode slag to obtain powder of the required particle size; the unqualified anode slag particles screened out are returned to the ball mill for reprocessing; Storage and labeling: Store the processed anode slag in a dry and well-ventilated warehouse in sealed containers or moisture-proof bags; clearly mark the source and processing date of the anode slag on the storage container for easy traceability and management.

[0011] The above steps describe in detail the drying and grinding process of anode slag, including collection and pretreatment, drying, grinding, screening, storage and labeling. Through these steps, the quality and particle size of anode slag are ensured to meet the requirements, the processing efficiency and accuracy are improved, and the storage and management process is optimized.

[0012] Furthermore, the mixing of the silicon manganese slag and the anode slag specifically comprises the following steps: Weighing raw materials: weigh the treated silicon manganese slag and anode slag respectively according to the ratio of 100:15-20; Mixing raw materials: put the weighed silicon manganese slag and anode slag into the blender or mixer respectively; Turn on the mixing equipment and set the mixing time to 10-20 minutes for mixing; during the mixing process, regularly check the mixing state to ensure that the silicon manganese slag and the anode slag can be evenly mixed to avoid stratification; Mixing quality inspection: Sampling inspection method is adopted to check the uniformity of mixed slag and verify whether the proportion and uniformity of silicon manganese slag and anode slag in the mixture meet the requirements.

[0013] The above steps further define the mixing process of silicon manganese slag and anode slag, including raw material weighing, mixing treatment and mixture inspection. Through these steps, it is ensured that the silicon manganese slag and anode slag are mixed evenly to meet the requirements of subsequent treatment and improve the treatment efficiency and effect.

[0014] Furthermore, the pulping and leaching specifically comprises the following steps: Raw material preparation: preparing uniformly mixed slag and anolyte produced by electrolytic manganese electrolysis system; Prepare slurry: mix the mixed slag and the anolyte in a volume ratio of 1:3-5; Stirring: Use a stirring device to fully mix the mixed slag and the anolyte to ensure uniform mixing. The stirring speed is set in the range of 50-100 rpm and the stirring time is 10-15 minutes; Leaching reaction: Transfer the prepared slurry to a reaction vessel, set the reaction temperature to 25-35°C, ensure that the reaction conditions are suitable, and react for 1-2 hours.

[0015] Among them, regarding the mixing ratio of silicomanganese slag and anode slag and the ratio of adding concentrated sulfuric acid, the silicomanganese slag contains 4% sulfide (average value), mainly in the form of calcium sulfide and manganese sulfide. The manganese dioxide in the anode slag is used to oxidize hydrogen sulfide gas. During the reaction, each mole of calcium sulfide or manganese sulfide reacts with 1 mole of sulfuric acid to generate 1 mole of hydrogen sulfide. Each mole of hydrogen sulfide reacts with 1 mole of manganese dioxide.

[0016] It has been determined that the manganese dioxide content in the anode slag is about 20%, and the sulfide content of 4% means that there are 40 grams of sulfide in every 1000 grams of silicomanganese slag, and 40 grams of sulfide is about 0.4 mole (the molar mass of calcium sulfide is about 72 grams / mole, and the molar mass of manganese sulfide is about 87 grams / mole). In order to completely oxidize 0.4 moles of hydrogen sulfide, 0.4 moles of manganese dioxide are required, and 0.4 moles of manganese dioxide are about 35 grams (the molar mass of manganese dioxide is 87 grams / mole).

[0017] Assuming that the anode slag contains 20% manganese dioxide, 175 grams of anode slag is required. Therefore, the reasonable mixing ratio of silicon manganese slag to anode slag is about 1000 grams of silicon manganese slag to 175 grams of anode slag.

[0018] Each mole of sulfide requires 1 mole of sulfuric acid, and 0.4 moles of sulfide require 0.4 moles of sulfuric acid. The molar mass of sulfuric acid is 98 g / mol, so 0.4 moles of sulfuric acid is about 39.2 g. The density of 93% concentrated sulfuric acid is about 1.84 g / ml, so 39.2 g of sulfuric acid requires about 21.3 ml of concentrated sulfuric acid.

[0019] The beneficial effects of the present invention include: Effective resource recovery: Through the treatment of silicon manganese slag and anode slag, the manganese element can be recovered to the maximum extent, thus improving the utilization efficiency of resources.

[0020] Reduce environmental pollution: effectively eliminate the generation of hydrogen sulfide gas, avoid the pollution of toxic gases to the environment, and meet environmental protection requirements.

[0021] Reduce resource waste: The treated silicon-manganese slag and anode slag can be effectively utilized, reducing land occupation and resource waste, and supporting the concept of sustainable development.

[0022] Optimize treatment process: By recycling the filtrate and properly treating the filter residue, the waste treatment process is optimized and the economy and efficiency of the overall process are improved.

[0023] Improve production efficiency: By properly handling silicon-manganese slag and anode slag, the overall efficiency of silicon-manganese alloy production can be improved and the additional costs caused by improper waste treatment can be reduced. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific embodiments: Embodiment: A method for treating sulfides in a silicon-manganese alloy slag leaching process comprises the following steps: Crushing and drying: The silicon-manganese slag and the anode slag of the electrolytic system are processed separately. The silicon-manganese slag is rolled into powder by a roller press, and the anode slag is dried and ground to reach 100 mesh; Mixing: Evenly mix silicon manganese slag and anode slag in a ratio of 100:15-20 to obtain mixed slag; Pulping and leaching: The mixed slag and the anolyte produced by the electrolysis system are subjected to pulping and leaching reaction for 1-2 hours; Add concentrated sulfuric acid: After leaching reaction for 1-2 hours, add concentrated sulfuric acid at a ratio of 100:2-2.5 of silicon manganese slag to concentrated sulfuric acid, and react for another 1-2 hours. The sulfide in the silicon manganese slag reacts with sulfuric acid to generate hydrogen sulfide gas and sulfate; the concentration of the concentrated sulfuric acid is 93%; Sulfide treatment: With the anode liquid as a carrier, the hydrogen sulfide gas and manganese dioxide in the anode slag quickly come into contact, and a redox reaction occurs, converting hydrogen sulfide into elemental sulfur or low-valent sulfate, while the tetravalent manganese is reduced to divalent manganese; Filter pressing and recycling: After the reaction is complete, the slurry produced by the reaction is filter pressed, and the filtrate is returned to the liquid preparation workshop to prepare qualified neutral liquid for electrolysis in the electrolytic manganese process; the filter residue is transported to the slag yard for storage pretreatment to complete the treatment of sulfides in the silicon-manganese alloy slag leaching process.

[0025] Among them, regarding the silicon-manganese slag raw materials, they are collected from the production line or storage place, and the collected silicon-manganese slag is subjected to preliminary inspection to remove large impurities and visible stones or metal impurities, and a screen or magnetic separation equipment is used to further clean up larger impurities.

[0026] Next, the silicomanganese slag is processed using a roller press and pressed into powder. The operating parameters of the roller press are set as follows: the roller pressure is adjusted to 300-500 MPa, and the roller speed is set within the range of 5-10 rpm to ensure that the powder particle size meets the 100 mesh requirement. During operation, the equipment temperature and operating status are monitored in real time to prevent the equipment from overheating or overloading.

[0027] Subsequently, the rolled silicomanganese slag is dried. Use a rotary dryer or a belt dryer to evenly place the powder into the dryer and set the drying temperature in the range of 100-150°C to ensure that the moisture content is reduced to less than 5%. During the drying process, regularly check the operating status of the equipment to ensure uniform drying, and monitor the moisture content of the silicomanganese slag after drying to ensure that it meets the predetermined standards.

[0028] Next, the rolled and dried silicomanganese slag is screened using a vibrating screen or rotary screening equipment to obtain the required particle size (100 mesh). The treated silicomanganese slag is put into the screening equipment for screening, and the screening process is adjusted according to the mesh number of the screen to obtain powder that meets the requirements. For the larger particles screened out, they should be returned to the roller press for reprocessing to ensure uniform particle size.

[0029] Finally, the treated silicomanganese slag is stored in a dry and well-ventilated warehouse, using sealed containers or moisture-proof bags to maintain its quality. The source, treatment date and other relevant information of the silicomanganese slag should be clearly marked on the storage container for easy traceability and management.

[0030] Regarding anode slag, the anode slag treatment process begins with collecting anode slag from the electrolytic manganese production line or storage site. After collection, the collected anode slag is initially inspected to remove large impurities and visible stone or metal impurities, and screens or magnetic separation equipment are used to clean up larger impurities.

[0031] During the drying process, the anode slag is evenly placed in the rotary dryer. The drying temperature is set at 120°C to ensure that the moisture content is reduced to less than 5%. The operating status of the equipment needs to be checked regularly to ensure uniform drying, and the moisture content of the anode slag after drying needs to be monitored to ensure that it meets the predetermined standards.

[0032] The dried anode slag is then fed into a ball mill for grinding. During this process, the operating parameters of the ball mill are set: the speed is 50 rpm, the grinding medium loading is 30% of the total weight of the material, and the ratio of abrasive to material is 1:1 to ensure grinding to a particle size of 100 mesh. The temperature and equipment operating status during the grinding process should be monitored to prevent the equipment from overheating or overloading, and to ensure that the grinding effect is as expected.

[0033] After the grinding is completed, the anode slag is screened with a vibrating screen to obtain the powder of the required particle size. The qualified powder screened out is collected and stored, while the larger particles screened out should be returned to the ball mill for reprocessing.

[0034] Finally, the treated anode slag is stored in a dry and well-ventilated warehouse, using sealed containers or moisture-proof bags to maintain its quality. At the same time, the source, processing date and other relevant information of the anode slag are clearly marked on the storage container for easy traceability and management. Through these specific steps, the drying and grinding of the anode slag ensures its effective use in subsequent processes and optimizes the overall production process.

[0035] After the silicon manganese slag and anode slag are processed, they reach the required particle size and moisture standards. Then, the required raw materials are accurately weighed, and the silicon manganese slag and anode slag are weighed separately according to the ratio of 100:15-20. For example, to process 1000 kg of silicon manganese slag, 150 to 200 kg of anode slag is required.

[0036] Load the weighed silicomanganese slag and anode slag into the mixing equipment. Use efficient mixing equipment, such as a horizontal ribbon mixer or a double cone mixer. Start the mixing equipment, set the mixing time to 15 minutes and the mixing speed to 40 rpm to ensure full and uniform mixing.

[0037] During the mixing process, check the mixing status regularly to ensure uniform mixing of silicon manganese slag and anode slag to avoid stratification. Use sampling tools to extract samples from the mixture and test the ratio of silicon manganese slag to anode slag in the samples to ensure that they meet the requirements.

[0038] After mixing, pulping and leaching can be carried out. The pulping and leaching process includes the following steps: First, prepare the mixed slag and the anolyte produced by the electrolysis system to ensure that both meet the appropriate chemical composition and particle size standards. The mixed slag and anolyte are prepared in a volume ratio of 1:3-5 and fully mixed by stirring equipment to ensure uniformity.

[0039] Next, the prepared slurry is transferred to a reaction vessel, the reaction temperature is set at 25-35°C, and the leaching reaction is carried out for 1-2 hours.

[0040] Then, concentrated sulfuric acid is added to the silicomanganese slag in a ratio of 100:2-2.5, and the reaction is carried out for 1-2 hours. The sulfide reacts with sulfuric acid to generate hydrogen sulfide gas and sulfate. Subsequently, in the anode liquid, the hydrogen sulfide gas contacts manganese dioxide to undergo a redox reaction, converting hydrogen sulfide into elemental sulfur or low-valent sulfate, and at the same time, tetravalent manganese is reduced to divalent manganese.

[0041] Finally, the slurry after the reaction is completed is transferred from the reaction vessel to the filter press. In order to ensure the accuracy of the treatment and the normal operation of the equipment, appropriate sampling and analysis are required during the transfer process to confirm whether the reaction is complete. Special equipment is used during the transfer process to prevent slurry leakage or uneven mixing.

[0042] In the filtration stage, the slurry is evenly transported to the filter press to separate the filtrate and the filter residue. It is necessary to select appropriate filter cloth and filter plate according to the properties of the slurry, and set the appropriate filtration pressure to improve the separation efficiency. During the operation, the operating status of the equipment is monitored in real time, and the flow rate of the filtrate and the discharge of the filter residue are checked to ensure the stability and safety of the operation.

[0043] The treated filtrate should be transferred to the liquid preparation workshop for further neutralization, filtration and pH adjustment to produce a neutral liquid that meets the requirements. The treated neutral liquid will be recycled and returned to the electrolytic manganese production line to continue to be used as electrolyte to achieve efficient use of resources and reduce environmental pollution.

[0044] At the same time, the filter residue will be transported to the slag yard for storage. Appropriate equipment will be used during the transportation process to prevent the filter residue from being scattered or contaminated during the transportation process. The filter residue in the slag yard will be pre-treated according to environmental requirements, including controlling the humidity of the storage area and preventing pollution, to complete the final treatment of the silicon-manganese alloy slag. Through these steps, the treatment of the silicon-manganese alloy slag can be completed efficiently, and the filtrate can be recycled to ensure the environmental protection of the treatment process and the maximum utilization of resources.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for treating sulfides in a silicon-manganese alloy slag leaching process, characterized in that: The following steps are involved: Crushing and drying: The silicon-manganese slag and the anode slag of the electrolysis system are processed separately. The silicon-manganese slag is rolled into powder using a roller press, and the anode slag is dried and ground to make both reach 80-120 mesh; Mixing: Evenly mix silicon manganese slag and anode slag in a ratio of 100:15-20 to obtain mixed slag; Slurrying and leaching: The mixed slag is subjected to pulping and leaching reaction with the anolyte produced by the electrolysis system for 1-2 hours; Add concentrated sulfuric acid: After 1-2 hours of leaching reaction, add concentrated sulfuric acid at a ratio of 100:2-2.5 of silicomanganese slag to concentrated sulfuric acid, and react for another 1-2 hours. The sulfide in the silicomanganese slag reacts with the sulfuric acid to generate hydrogen sulfide gas and sulfate; the concentration of the concentrated sulfuric acid is 93%; Sulfide treatment: With the anolyte as the carrier, hydrogen sulfide gas and manganese dioxide in the anode slag quickly come into contact, causing a redox reaction, converting hydrogen sulfide into elemental sulfur or low-valent sulfate, while tetravalent manganese is reduced to divalent manganese; Filtration and recycling: After the reaction is complete, the slurry produced by the reaction is filtered, and the filtrate is returned to the liquid preparation workshop to produce qualified neutral liquid for electrolysis in the electrolytic manganese process; the filter residue is transported to the slag yard for storage pretreatment to complete the treatment of sulfides in the silicon-manganese alloy slag leaching process.

2. The method for treating sulfides in a silicon-manganese alloy slag leaching process according to claim 1, wherein: The treatment of the silicomanganese slag specifically comprises the following steps: Collection and pretreatment: Collect silicomanganese slag from the production line or storage site, conduct preliminary inspection, remove large impurities and visible stones or metal impurities, and use screens or magnetic separation equipment to clean up larger impurities; Roller pressing: Feed the silicomanganese slag into a roller press, adjust the operating parameters of the roller press to a roller pressure of 300-500 MPa and a roller speed of 5-10 rpm, and press it into powder to ensure that the powder particle size meets the requirement of 100 mesh; Drying treatment: Place the rolled silicon-manganese slag powder into a rotary dryer or belt dryer, set the drying temperature in the range of 100-150°C, and reduce the moisture content to below 5%; Screening treatment: Use vibrating screen or rotary screening equipment to screen the dried silicon-manganese slag to ensure that the powder particle size meets the requirements; the screened silicon-manganese slag powder that does not meet the requirements is subjected to secondary roller pressing treatment; Storage and labeling: Store the treated silicomanganese slag in a dry and well-ventilated warehouse in sealed containers or moisture-proof bags, and mark the source and processing date of the silicomanganese slag on the storage container for traceability and management.

3. The method for treating sulfides in a silicon-manganese alloy slag leaching process according to claim 1, wherein: The anode slag drying and grinding process specifically includes the following steps: Collection and pretreatment: Collect anode slag from electrolytic manganese production line or storage place, conduct preliminary inspection on the collected anode slag, remove large impurities and visible stones or metal impurities, and use screens or magnetic separation equipment to clean up larger impurities; Drying treatment: Place the anode slag evenly in a rotary dryer for drying. Set the drying temperature to 120°C to ensure that the moisture content is reduced to below 5%. Grinding treatment: The dried anode slag is fed into a ball mill for grinding treatment. The operating parameters of the ball mill are set to a speed of 50 rpm, a grinding medium loading of 30% of the total weight of the material, and a ratio of abrasive to material of 1:1 to ensure that the anode slag is ground to a particle size of 100 mesh. Screening treatment: Use a vibrating screen to screen the ground anode slag to obtain powder of the required particle size; the unqualified anode slag particles screened out are returned to the ball mill for reprocessing; Storage and labeling: Store the processed anode slag in a dry and well-ventilated warehouse in sealed containers or moisture-proof bags; clearly mark the source and processing date of the anode slag on the storage container for easy traceability and management.

4. The method for treating sulfides in a silicon-manganese alloy slag leaching process according to claim 1, wherein: The mixing of the silicon manganese slag and the anode slag specifically comprises the following steps: Weighing raw materials: weigh the treated silicon manganese slag and anode slag according to the ratio of 100:15-20; Mixing raw materials: put the weighed silicon manganese slag and anode slag into the blender or mixer respectively; Turn on the mixing equipment and set the mixing time to 10-20 minutes; during the mixing process, check the mixing status regularly to ensure that the silicon manganese slag and anode slag are evenly mixed to avoid stratification; Mixing quality inspection: adopt sampling inspection method to check the uniformity of mixed slag, and verify that the ratio and uniformity of silicon manganese slag and anode slag in the mixture meet the requirements.

5. The method for treating sulfides in a silicon-manganese alloy slag leaching process according to claim 1, wherein: The pulping and leaching specifically comprises the following steps: Raw material preparation: prepare the evenly mixed mixed slag and the anolyte produced by the electrolytic manganese electrolysis system; Prepare slurry: mix the mixed slag and the anolyte in a volume ratio of 1:3-5; Stirring: Use a stirring device to fully mix the mixed slag and the anolyte to ensure uniform mixing. The stirring speed is set in the range of 50-100 rpm and the stirring time is 10-15 minutes; Leaching reaction: Transfer the prepared slurry to a reaction vessel, set the reaction temperature to 25-35°C, ensure the reaction conditions are suitable, and react for 1-2 hours.