Lead-antimony slag recovery and antimony treatment system

Abstract

This utility model discloses a lead-antimony slag recovery and antimony treatment system, comprising: a crushing device, a medium-frequency heating furnace, an ingot casting machine, a dust collection device, and a water cooler; the crushing device is located on the left side of the system and is connected to the feed inlet of the medium-frequency heating furnace via a belt conveyor, which is also equipped with a batching and metering device; a dust collection device is also located above the medium-frequency heating furnace; a water cooler is located on the right side of the medium-frequency heating furnace, and the water cooler is connected to the inlet and outlet water pipes of the medium-frequency heating furnace via pipelines; a system control device for controlling the medium-frequency heating furnace is located behind the medium-frequency heating furnace; an ingot casting machine is located in front of the medium-frequency heating furnace, which is used to receive the antimony liquid flowing out of the medium-frequency heating furnace. This utility model's lead-antimony slag recovery and antimony treatment system has a good antimony capture effect, with an antimony recovery rate of over 99%, and good economic benefits; the system has a compact structure, simple operation, fast processing, short process flow, and high degree of automation; it causes no environmental pollution, has low cost, and requires little investment.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous resource recycling equipment technology, and more specifically, to a system for recycling antimony from lead-containing antimony slag. Background Technology

[0002] Existing methods for treating lead-antimony slag suffer from numerous technical shortcomings, primarily manifested in complex processing techniques, high equipment investment, severe environmental pollution, and low recovery efficiency. Traditional processes typically employ multi-stage smelting, requiring multiple high-temperature treatments. This not only results in high energy consumption and long processing cycles but also generates large amounts of heavy metal-containing fumes and slag, causing serious secondary pollution. Regarding equipment, traditional systems lack effective crushing and pretreatment devices, leading to uneven raw material processing. Furthermore, the lack of precise batching and metering devices hinders accurate raw material proportioning, affecting the stability of the final product's quality. In addition, existing dust collection systems often cannot withstand high temperatures, resulting in low dust collection efficiency, and the lack of effective cooling systems affects the stability of continuous equipment operation. In terms of automation control, traditional systems generally lack intelligent control systems, making precise control of process parameters difficult, further restricting antimony recovery rates and product quality. These problems collectively prevent existing technologies from achieving the goal of efficient, economical, and environmentally friendly antimony recovery. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a lead-antimony slag recovery and antimony treatment system. This system, through the combination of various devices, is economical, simple, and efficient. The antimony recovery rate of lead-antimony slag treated by this system reaches 99%. The process is short, easy to operate, requires little investment, has low cost, and high efficiency, making it very suitable for the recycling and utilization of the rare and precious metal antimony.

[0004] To address the aforementioned technical problems, this utility model proposes a lead-antimony slag recovery and antimony treatment system, comprising: a crushing device, a medium-frequency heating furnace, an ingot casting machine, a dust collection device, and a water cooler; the crushing device is located on the left side of the system and is connected to the feed inlet of the medium-frequency heating furnace via a belt conveyor, which is also equipped with a batching and metering device; a dust collection device is also provided above the medium-frequency heating furnace; a water cooler is located on the right side of the medium-frequency heating furnace, and the water cooler is connected to the inlet and outlet water pipes of the medium-frequency heating furnace via pipelines; a system control device for controlling the medium-frequency heating furnace is located behind the medium-frequency heating furnace; and an ingot casting machine is located in front of the medium-frequency heating furnace, which is used to receive the antimony liquid flowing out of the medium-frequency heating furnace.

[0005] Furthermore, a moving trolley is provided below the slag outlet of the medium-frequency heating furnace.

[0006] Furthermore, the ingot casting machine is connected to a dust collection device via a duct.

[0007] Furthermore, the medium-frequency heating furnace is electrically connected to the system control device.

[0008] Furthermore, the crushing device is a two-stage crushing device.

[0009] Furthermore, the batching and metering device is a metering belt scale.

[0010] Furthermore, the ingot casting machine is a track-mounted, mobile ingot casting machine.

[0011] Furthermore, the movable trolley is a high-temperature resistant steel trolley.

[0012] Furthermore, the dust collection device is a high-temperature resistant baghouse dust collection device that can withstand temperatures up to 200℃.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. This utility model achieves efficient pretreatment of raw materials through the synergistic effect of crushing device, batching and metering device and medium frequency heating furnace. Combined with high temperature resistant dust collection device and water cooling system, it effectively controls pollution and ensures equipment stability. It has the advantages of simplifying process flow, improving the uniformity of raw material processing, reducing environmental pollution and improving equipment operation stability.

[0015] 2. This utility model has a compact layout, low investment, low processing cost, automatic elevation control, easy operation and control, convenient management and maintenance, and requires fewer personnel.

[0016] This invention has a good effect on the treatment of lead slag from antimony refining, with a high recovery efficiency of up to 99%. Attached Figure Description

[0017] The features and advantages of this utility model will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as limiting the utility model in any way. In the drawings:

[0018] Figure 1 This is a schematic diagram of the antimony recovery and treatment system for lead-containing antimony slag provided by this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Crushing device; 2. Batching and metering device; 3. Belt conveyor device; 4. System control device; 5. Medium frequency heating furnace; 6. Water cooler; 7. Ingot casting machine; 8. Mobile trolley; 9. Dust collection device. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] This application proposes a system for recovering and treating antimony from lead-containing antimony slag, such as... Figure 1 As shown, the system includes a crushing device 1, a medium-frequency heating furnace 5, a casting machine 7, a dust collection device 9, and a water cooler 6. The crushing device 1 is located on the left side of the system and is connected to the feed inlet of the medium-frequency heating furnace 5 via a belt conveyor 3. The belt conveyor 3 is also equipped with a batching and metering device 2. A dust collection device 9 is also located above the medium-frequency heating furnace 5. A water cooler 6 is located on the right side of the medium-frequency heating furnace 5, and the water cooler 6 is connected to the inlet and outlet water pipes of the medium-frequency heating furnace 5 via pipes. A system control device 4 for controlling the medium-frequency heating furnace 5 is located behind the medium-frequency heating furnace 5. A casting machine 7 is located in front of the medium-frequency heating furnace 5, and the casting machine 7 is used to receive the antimony liquid flowing out of the medium-frequency heating furnace 5. The system proposed in this application has a compact structure and high production efficiency.

[0023] Specifically, the lead-antimony slag, after being processed by the crushing device 1 located on the left side of the system, is quantitatively fed into the medium-frequency heating furnace 5 via a belt conveyor 3 with metering function. During the smelting process, the medium-frequency heating furnace 5 generates eddy currents to heat the material through electromagnetic induction, and the water cooler 6 circulates and cools the furnace body to control the smelting temperature. The molten antimony flows into the ingot casting machine 7 through the discharge port to form ingots, while the dust collection device 9 installed above the medium-frequency heating furnace 5 captures high-temperature dust. The direct connection between the crushing device 1 and the medium-frequency heating furnace 5 reduces material transfer links, the batching and metering device 2 on the belt conveyor 3 ensures a stable proportion of smelting materials, the synergistic effect of the water cooler 6 and the medium-frequency heating furnace 5 reduces heat loss, and the dust collection device 9 collects dust at the source, forming a closed-loop processing flow.

[0024] In some specific embodiments, the crushing device 1 is a two-stage crushing device. The crushing device 1 refers to the equipment for physically crushing lead-antimony slag. Specifically, it can be a combination of a jaw crusher and a hammer crusher to achieve two-stage crushing. Its function is to process the raw material to a particle size range suitable for smelting (less than 20 mm).

[0025] In some specific embodiments, the batching and metering device 2 is a metering belt scale. The belt conveyor device 3 refers to a continuous conveying equipment used for material transfer. Specifically, it can adopt a combination structure of a belt conveyor and a metering belt scale to achieve quantitative conveying. Its function is to ensure that the material enters the smelting stage according to the set ratio.

[0026] In some specific embodiments, the medium-frequency heating furnace 5 is electrically connected to the system control device 4. The medium-frequency heating furnace 5 refers to a device that uses the principle of electromagnetic induction to heat materials. Specifically, it can adopt an induction heating furnace body structure with a graphite crucible to achieve rapid heating. Its function is to reduce metal oxidation loss through non-contact heating.

[0027] In some specific embodiments, the water cooler 6 refers to a circulating cooling device used for temperature control. Specifically, it can be a combination of a shell-and-tube heat exchanger and a circulating water pump to achieve heat exchange. Its function is to maintain a stable smelting temperature and recover waste heat.

[0028] In some specific embodiments, a movable trolley 8 is provided below the slag outlet of the medium-frequency heating furnace 5. Specifically, the movable trolley 8 can be a high-temperature resistant steel trolley. It is used to transport the waste slag generated in the medium-frequency heating furnace 5 to the slag yard.

[0029] In some specific embodiments, the ingot casting machine 7 is connected to a dust collection device 9 via a duct. This device is used to recover the dust generated during the ingot casting process.

[0030] In some specific embodiments, the ingot casting machine 7 is a track-mounted mobile ingot casting machine. The track-mounted design allows the ingot casting machine 7 to receive molten antimony liquid at a fixed position, reducing losses during the production process and transporting the antimony ingots to the warehouse, thus achieving automated production and improving production efficiency.

[0031] In some specific embodiments, the dust collection device 9 is a high-temperature bag dust collection device resistant to 200℃.

[0032] The 200℃ high-temperature resistance refers to the use of fiber materials with a temperature resistance exceeding 200℃ for the filter media. Specifically, this can be achieved using polytetrafluoroethylene (PTFE) coated fiberglass, which maintains structural stability in high-temperature flue gas environments. The baghouse dust collection device refers to a dry dust collection system composed of multiple bag filter units. This can be achieved using cylindrical filter bags made of needle-punched felt or membrane-coated filter media, capturing dust particles containing heavy metals through surface filtration and deep-layer interception. The high-temperature resistant filter bags maintain their porous structure and mechanical strength even at high temperatures, effectively trapping fine dust containing lead and antimony on the filter bag surface. When the dust layer reaches a set thickness, a pulse-jet cleaning system removes the dust and collects it in a dust hopper, preventing heavy metal dust from being emitted with the flue gas.

[0033] Through the above technical solutions, this application can reduce material pretreatment and transfer time, reduce equipment footprint and operating energy consumption, and improve the recovery rate of antimony. The use of the medium-frequency heating furnace 5 in conjunction with the water cooler 6 improves temperature control accuracy and reduces metal oxidation loss. The synchronous operation of the dust collection device 9 and the smelting process effectively suppresses the diffusion of dust and harmful gases, and the continuous operation of the ingot casting machine 7 shortens the production cycle, forming an efficient and environmentally friendly antimony recovery and treatment system.

[0034] The working process of this utility model is as follows:

[0035] Lead-containing antimony slag produced from antimony pyrometallurgical refining is transported to crushing device 1 for secondary crushing, controlling the particle size to below 20mm. The crushed slag is then transported to batching and metering device 2 via belt conveyor 3, where metered reducing agent is added. The belt conveyor then rolls the batched material into the furnace chamber of medium-frequency heating furnace 5. Water cooler 6 is turned on, system control device 4 is activated, the heating system of medium-frequency heating furnace 5 is started, and dust collection device 9 is activated. After the material is melted, reacted, and clarified in medium-frequency heating furnace 5, the clarified slag is poured into a mobile trolley 8 and sent to the slag yard. After the slag is poured out, ingot casting machine 7 is moved to the discharge port of medium-frequency heating furnace 5, and antimony liquid is poured in to cast ingots. The product is then transported to the warehouse. Dust collection device 9 is cleaned to collect the antimony oxide product. After completing one process, the next batch of material is processed. After all materials are processed, crushing device 1, batching and metering device 2, medium-frequency heating furnace 5, and system control device 4 are turned off. After there is no more smoke or dust on site, dust collection device 9 is turned off, and finally water cooler 6 is turned off.

[0036] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A system for recovering and treating antimony from lead-containing antimony slag, characterized in that, include: The system includes a crushing device, a medium-frequency induction heating furnace, an ingot casting machine, a dust collection device, and a water cooler. The crushing device is located on the left side of the system and is connected to the feed inlet of the medium-frequency induction heating furnace via a belt conveyor. The belt conveyor is also equipped with a batching and metering device. A dust collection device is also located above the medium-frequency induction heating furnace. A water cooler is located on the right side of the medium-frequency induction heating furnace and is connected to the inlet and outlet water pipes of the furnace via pipelines. A system control device for controlling the medium-frequency induction heating furnace is located behind the furnace. An ingot casting machine is located in front of the furnace and is used to receive the antimony liquid flowing out of the furnace.

2. The antimony recovery and treatment system for lead-containing antimony slag according to claim 1, characterized in that, A mobile trolley is provided below the slag outlet of the medium-frequency heating furnace.

3. The antimony recovery and treatment system for lead-containing antimony slag according to claim 1, characterized in that, The ingot casting machine is connected to the dust collection device via air ducts.

4. The antimony recovery and treatment system for lead-containing antimony slag according to claim 1, characterized in that, The medium-frequency heating furnace is electrically connected to the system control device.

5. The antimony recovery and treatment system for lead-containing antimony slag according to claim 1, characterized in that, The crushing device is a two-stage crushing device.

6. The antimony recovery and treatment system for lead-containing antimony slag according to claim 1, characterized in that, The batching and metering device is a metering belt scale.

7. The antimony recovery and treatment system for lead-containing antimony slag according to claim 1, characterized in that, The ingot casting machine is a track-mounted, mobile ingot casting machine.

8. The antimony recovery and treatment system for lead-containing antimony slag according to claim 2, characterized in that, The mobile trolley is a high-temperature resistant steel trolley.

9. The antimony recovery and treatment system for lead-containing antimony slag according to claim 1, characterized in that, The dust collection device is a high-temperature resistant bag filter dust collector that can withstand temperatures up to 200℃.

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