A zinc sulfide concentrate roasting furnace
By installing rain shields and heat sinks on the roasting furnace, the problems of rainwater leakage and high-temperature creep were solved, achieving equipment protection and efficiency improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN WANYANG ZINC IND CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-31
AI Technical Summary
Existing zinc sulfide concentrate roasting furnaces are prone to rainwater seepage corrosion and high-temperature creep during the rainy season, affecting equipment lifespan and efficiency.
A roasting furnace structure including a shell, a rain shield, heat sinks, and a return port was designed. The rain shield prevents rainwater from entering, the heat sinks reduce the temperature, and the return port recovers raw materials that have not been fed into the furnace, thereby improving equipment protection and efficiency.
It effectively prevents rainwater corrosion, reduces shell temperature, extends equipment life, improves raw material utilization, enhances shell strength, and increases roasting efficiency.
Smart Images
Figure CN224580710U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roasting furnace technology, specifically to a zinc sulfide concentrate roasting furnace. Background Technology
[0002] Roasting of zinc sulfide concentrate is a key pretreatment step in the hydrometallurgical zinc smelting process. Its purpose is to remove sulfur from the ore through oxidative roasting and convert zinc sulfide into zinc oxide, which is easy to leach with acid. As the core equipment in this process, the structure and performance of the roasting furnace are directly related to roasting efficiency, energy consumption, equipment life and raw material utilization.
[0003] Currently, zinc sulfide concentrate roasting furnaces widely used in industry have certain shortcomings in practical use. One is the problem of rainwater leakage: roasting furnaces are usually large outdoor or semi-outdoor installation equipment. Traditional furnace structures are simple and lack effective rainproof and drainage designs. During the rainy season, rainwater can easily enter the interior of the roasting furnace, causing corrosion and affecting its service life. The second is that the temperature in the upper section of the roasting furnace is relatively high. Since the furnace body is made of steel, the steel plates will creep at high temperatures, thus affecting the overall shell strength. Therefore, a device is needed to solve the above problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a zinc sulfide concentrate roasting furnace, which solves the problems of rainwater easily entering the roasting furnace body and creep easily occurring due to excessively high roasting furnace body temperature.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a zinc sulfide concentrate roasting furnace, comprising a mounting base plate, a partition plate, and a shell, wherein the shell is fixed on the upper surface of the mounting base plate, the partition plate is fixedly connected to the outer surface of the shell to separate the feeding space, a rain shield is fixedly connected to the top of the shell, the diameter of the rain shield is larger than the diameter of the shell, and multiple heat dissipation fins are fixedly connected to the outer surface of the shell above the partition plate;
[0006] An extension is fixedly connected to one side of the housing. An inlet is provided on the front of the extension for adding raw materials into the housing. A return port is provided on the upper surface of the mounting base at a position corresponding to the downward direction of the extension for recovering scattered raw materials.
[0007] Optionally, a baffle is slidably connected to the front of the extension section to close the feed inlet, and a limiting block is fixedly connected to the bottom of the extension section to support the baffle.
[0008] Optionally, a telescopic rod is fixedly connected to the outer surface of the housing, and the output end of the telescopic rod is fixedly connected to the baffle via a chain to pull the baffle up to open the feed port.
[0009] Optionally, the number of heat sinks is multiple, and the multiple heat sinks are evenly distributed in a ring on the outer surface of the housing.
[0010] Optionally, a folding plate is fixedly connected to the lower surface of the rain shield, and the folding plate and the rain shield form an acute angle to prevent rainwater from flowing back.
[0011] Optionally, a screen can be detachably connected to the upper surface of the return port, and guide plates are fixedly connected to both sides of the return port to position the feeder.
[0012] Optionally, a recycling mechanism is fixedly connected to the lower surface of the mounting substrate to recycle spilled raw materials.
[0013] Optionally, the recycling mechanism includes a receiving hopper, a connecting pipe, and a recycling pipe. The receiving hopper is fixedly connected to the lower surface of the mounting base plate and located below the return port. The connecting pipe is fixedly connected to the lower surface of the receiving hopper to connect multiple receiving hoppers. The recycling pipe is fixedly connected to the lower surface of the connecting pipe to discharge raw materials from the connecting pipe.
[0014] This utility model provides a zinc sulfide concentrate roasting furnace, which has the following beneficial effects:
[0015] This utility model provides a zinc sulfide concentrate roasting furnace. Through the combined arrangement of the shell and an outwardly extending rain baffle, the rain baffle can divert rainwater to one side, preventing it from entering the furnace body and thus reducing corrosion of the furnace shell, extending the furnace's service life. Heat dissipation fins on the outer side of the shell quickly dissipate heat, reducing heat accumulation and lowering the furnace shell temperature to some extent, reducing the possibility of creep and improving the overall strength of the shell. The combined arrangement of the extension section, feed inlet, and return inlet allows raw materials to be added into the shell from the feed inlet. Raw materials accidentally falling outside can be swept into the return inlet for recycling, improving material utilization and reducing waste. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;
[0018] Figure 3 This is a schematic diagram of the structure of the shell of this utility model, viewed from the side.
[0019] Figure 4 This is a schematic diagram of the structure of the receiving hopper of this utility model, viewed from the side in cross-section.
[0020] Figure 5 This is a schematic diagram of the material receiving hopper of this utility model.
[0021] In the diagram: 1. Mounting base plate; 2. Partition plate; 3. Housing; 4. Rain shield; 5. Heat sink; 6. Extension section; 7. Feed inlet; 8. Return outlet; 9. Baffle; 10. Limiting block; 11. Telescopic rod; 12. Folding plate; 13. Screen; 14. Guide plate; 15. Receiving hopper; 16. Connecting pipe; 17. Recycling pipe. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0023] Please see Figures 1 to 5 This utility model provides a technical solution: a zinc sulfide concentrate roasting furnace, including a mounting base plate 1, a partition plate 2 and a shell 3. The shell 3 is fixed on the upper surface of the mounting base plate 1. The partition plate 2 is fixedly connected to the outer surface of the shell 3 to separate the feeding space. A rain shield 4 is fixedly connected to the top of the shell 3. The diameter of the rain shield 4 is larger than the diameter of the shell 3. Multiple heat sinks 5 are fixedly connected to the outer surface of the shell 3 above the partition plate 2.
[0024] An extension section 6 is fixedly connected to one side of the housing 3. A feed port 7 is provided on the front of the extension section 6 for adding raw materials into the housing 3. A return port 8 is provided on the upper surface of the mounting base plate 1 at the position corresponding to the downward direction of the extension section 6 for recycling scattered raw materials.
[0025] The mounting base plate 1 and the partition plate 2 divide the operating area into an external area, a filling area, and a recycling area. During the rainy season, the rain shield 4 on the shell 3 can block rainwater from above. At the same time, the size of the rain shield 4 is larger than that of the shell 3, so that the rainwater flowing down the rain shield 4 can fall directly from the edge of the rain shield 4 to prevent rainwater from entering the roasting furnace and causing corrosion and rust. The heat sink 5 on the outside of the shell 3 can accelerate the heat exchange between the shell 3 and the outside, reduce the accumulation of heat on the shell 3, thereby reducing the temperature of the roasting furnace shell 3 and preventing the shell 3 from creeping. There are a total of 270 heat sinks 5, which are arranged in three layers with 90 pieces in each layer. The partition plate 2 and the mounting base plate 1 form a filling area. The throwing machine can put the raw materials into the feed port 7. The raw materials that are not thrown into the feed port 7 will fall on the surface of the mounting base plate 1. After the raw materials are swept into the return port 8, the internal raw materials can be recycled and reused. There is also a waste heat recovery pipe on the top of the shell 3 to recover the internal heat, and a discharge port is provided at the bottom to discharge the finished products.
[0026] In this embodiment, as a preferred option, a baffle 9 is slidably connected to the front guide of the extension part 6. The baffle 9 is used to close the feed port 7. A limiting block 10 is fixedly connected to the bottom of the extension part 6. The limiting block 10 can fit against the bottom of the baffle 9 to support the baffle 9. A telescopic rod 11 is fixedly connected to the outer surface of the housing 3. The output end of the telescopic rod 11 is fixedly connected to the baffle 9 through a chain to pull the baffle 9 upward to open the feed port 7.
[0027] The telescopic rod 11 is electrically telescopic. When the telescopic rod 11 extends, the baffle 9 moves downward under the action of gravity, so that the baffle 9 closes the feed port 7. The limiting block 10 is located at the bottom of the extension part 6 to support the bottom of the baffle 9 and to position the baffle 9. When the telescopic rod 11 retracts, the telescopic rod 11 will pull the chain connected to the baffle 9, thereby pulling the baffle 9 upward, so that the feed port 7 is open to facilitate the addition of materials into the feed port 7. After the telescopic rod 11 retracts to the limit position, the lower edge of the baffle 9 is still on the extension part 6 to prevent the telescopic rod 11 from directly pulling out the baffle 9.
[0028] In this embodiment, as a preferred option, there are multiple heat sinks 5, and the multiple heat sinks 5 are evenly distributed in a ring on the outer surface of the housing 3. A folding plate 12 is fixedly connected to the lower surface of the rain shield 4, and an acute angle is formed between the folding plate 12 and the rain shield 4 to prevent rainwater from flowing back.
[0029] The heat sink 5 is evenly distributed in a ring on the outside of the housing 3, which can increase the contact surface with the air, thereby facilitating the dissipation of heat inside the housing 3 into the air. When rainwater flows down the rain shield 4, the folding plate 12 can prevent the rainwater from flowing down the lower surface of the rain shield 4, further preventing the rainwater from flowing along the surface of the housing 3.
[0030] In this embodiment, as a preferred option, a screen 13 is detachably connected to the upper surface of the return port 8, and guide plates 14 are fixedly connected to both sides of the return port 8 to position the feeder. A recycling mechanism is fixedly connected to the lower surface of the mounting base 1 to recycle scattered raw materials. The recycling mechanism includes a receiving hopper 15, a connecting pipe 16, and a recycling pipe 17. The receiving hopper 15 is fixedly connected to the lower surface of the mounting base 1 and located below the return port 8. The connecting pipe 16 is fixedly connected to the lower surface of the receiving hopper 15 to connect multiple receiving hoppers 15. The recycling pipe 17 is fixedly connected to the lower surface of the connecting pipe 16 to discharge the raw materials in the connecting pipe 16.
[0031] During feeding, the guide plate 14 can position the throwing machine, allowing it to more accurately face the feed inlet 7. Material not fed into the feed inlet 7 will fall onto the ground of the mounting base plate 1. The material can be swept into the recycling port for recycling. A screen 13 can be detachably connected to the recycling port to prevent personnel and equipment from falling. The material swept down from the recycling port will enter the receiving hopper 15 below the recycling port. The receiving hopper 15 collects the material and then passes it into the connecting pipe 16. The material in the connecting pipe 16 will flow into the recycling pipe 17 at one end for recycling. The connecting pipe 16 is inclined, with the inclination direction facing one side of the recycling pipe 17, which makes it faster to discharge the material in the connecting pipe 16 and reduces residue. There can be multiple feed inlets 7, return ports 8, and receiving hoppers 15, and the number of each is one-to-one. Multiple feed inlets 7 can speed up the feeding speed and improve processing efficiency.
[0032] In this invention, the working steps of the device are as follows:
[0033] 1. When feeding materials, start the telescopic rod 11, move the baffle 9 up to open the feed port 7, move the throwing machine to one side of the feed port 7, and position the throwing machine by the bottom guide plate 14. After the throwing machine is aligned with the feed port 7, start the throwing machine to feed the raw materials into the feed port 7.
[0034] 2. After feeding is complete, start the telescopic rod 11 to lower the baffle 9 to close the feed inlet 7, and move the feeding machine away;
[0035] 3. Use cleaning equipment to collect the raw materials scattered on the mounting base plate 1, sweep all the raw materials into the return port 8, and at the same time perform the raw material recycling operation at the bottom of the recycling pipe 17 for easy reuse.
[0036] The specific embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A zinc sulphide concentrate roaster, characterised in that: The device includes a mounting base (1), a partition plate (2), and a housing (3). The housing (3) is fixed to the upper surface of the mounting base (1). The partition plate (2) is fixedly connected to the outer surface of the housing (3) to separate the material loading space. A rain shield (4) is fixedly connected to the top of the housing (3). The diameter of the rain shield (4) is larger than the diameter of the housing (3). Multiple heat sinks (5) are fixedly connected to the outer surface of the housing (3) above the partition plate (2). An extension part (6) is fixedly connected to one side of the housing (3). A feed inlet (7) is provided on the front of the extension part (6) for adding raw materials into the housing (3). A return port (8) is provided on the upper surface of the mounting base plate (1) at the position corresponding to the downward direction of the extension part (6) for recycling scattered raw materials.
2. A zinc sulphide concentrate roaster as claimed in claim 1, characterised in that: The front guide of the extension part (6) is slidably connected to a baffle (9), which is used to close the feed port (7). The bottom of the extension part (6) is fixedly connected to a limiting block (10), which can fit against the bottom of the baffle (9) to support the baffle (9).
3. The zinc sulfide concentrate roasting furnace according to claim 2, characterized in that: A telescopic rod (11) is fixedly connected to the outer surface of the housing (3). The output end of the telescopic rod (11) is fixedly connected to the baffle (9) via a chain, so as to pull the baffle (9) upward to open the feed port (7).
4. A zinc sulfide concentrate roasting furnace according to any one of claims 1-3, characterized in that: The number of heat sinks (5) is multiple, and the multiple heat sinks (5) are evenly distributed in a ring on the outer surface of the housing (3).
5. A zinc sulfide concentrate roasting furnace according to claim 4, characterized in that: A folding plate (12) is fixedly connected to the lower surface of the rain shield (4), and an acute angle is formed between the folding plate (12) and the rain shield (4) to prevent rainwater from flowing back.
6. A zinc sulfide concentrate roasting furnace according to any one of claims 1-3, characterized in that: The upper surface of the return port (8) is detachably connected to a screen (13), and both sides of the return port (8) are fixedly connected to guide plates (14) for positioning the feeder.
7. A zinc sulfide concentrate roasting furnace according to claim 6, characterized in that: The lower surface of the mounting base plate (1) is fixedly connected to a recycling mechanism for recycling scattered raw materials.
8. A zinc sulfide concentrate roasting furnace according to claim 7, characterized in that: The recycling mechanism includes a receiving hopper (15), a connecting pipe (16), and a recycling pipe (17). The receiving hopper (15) is fixedly connected to the lower surface of the mounting base plate (1) and located below the return port (8). The connecting pipe (16) is fixedly connected to the lower surface of the receiving hopper (15) to connect multiple receiving hoppers (15). The recycling pipe (17) is fixedly connected to the lower surface of the connecting pipe (16) to discharge the raw material in the connecting pipe (16).