Ferronickel refining furnace
By introducing a purification box, an air purification tank, and an exhaust gas reaction pool into the nickel-iron refining furnace, combined with multi-stage filtration using activated carbon and HEPA filters and neutralization with an alkaline solution, the problem of ineffective purification of exhaust gas during nickel-iron refining was solved, achieving three-stage purification of exhaust gas and reducing environmental pollution.
Patent Information
- Application Number
- CN202422840376.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-21
AI Technical Summary
In the current nickel-iron refining process, waste gas cannot be purified in a timely and effective manner, leading to environmental pollution.
Design a nickel-iron refining furnace, comprising a combustion furnace body, a purification chamber, an air purification tank, and an exhaust gas reaction pool. The furnace employs multiple filtrations using activated carbon and HEPA filters, and neutralizes acidic substances in the exhaust gas with an alkaline solution to achieve three-stage purification of the exhaust gas.
It effectively reduces the pollution of exhaust gas to the environment, achieves three-stage filtration and neutralization of exhaust gas, and improves purification efficiency.
Smart Images
Figure CN223530131U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of metallurgical technology, and in particular to a nickel-iron refining furnace. Background Technology
[0002] Currently, over 60% of the world's nickel products come from sulfide ores, and over 60% of the world's nickel resources are found in laterite nickel ores. The ferronickel obtained by reducing and smelting laterite nickel ores in blast furnaces or electric furnaces, after refining, can be used as a substitute for electrolytic nickel in the production of stainless steel.
[0003] In existing technology, a spray lance extends from the bottom to the top of the nickel-iron refining furnace. Multiple nozzles on the lance inject inert gas or a mixture of oxygen and a cleaning agent into the crude nickel-iron molten metal. This effectively agitates the molten metal and ensures thorough mixing of the oxygen and cleaning agent, thus rapidly removing impurities and achieving nickel-iron refining. However, during nickel-iron refining, the exhaust gas from the refining furnace cannot be effectively purified in a timely manner, leading to environmental pollution. Utility Model Content
[0004] In order to reduce the pollution of the environment by exhaust gas, this application provides a nickel-iron refining furnace.
[0005] The nickel-iron refining furnace provided in this application adopts the following technical solution:
[0006] A nickel-iron refining furnace includes a combustion furnace body, a purification box, an air purification tank, and a waste gas reaction pool;
[0007] The air inlet on the purification box is connected to the combustion furnace body through an air inlet pipe. An activated carbon filter and a HEPA filter are slidably installed inside the purification box through auxiliary components.
[0008] The air inlet of the air purification canister is connected to the air outlet of the purification box via a first connecting pipe.
[0009] The inlet of the waste gas reaction tank is connected to the outlet of the air purification tank via a second connecting pipe, and an outlet pipe is fixedly installed at the outlet of the waste gas reaction tank.
[0010] Optionally, two auxiliary components are provided: one auxiliary component is detachably connected to the activated carbon filter, and the other auxiliary component is detachably connected to the HEPA filter.
[0011] Optionally, the bottom of the purification box has two connection holes, one of which is fitted with a funnel. Each funnel corresponds to an auxiliary component. The outer wall of the funnel has a groove, which is connected to the inside of the funnel through a horizontal hole. The auxiliary component includes an auxiliary rod, an auxiliary spring, and an auxiliary plate. One end of the auxiliary rod is located in the groove, and the other end passes through the horizontal hole and is located inside the funnel. The auxiliary plate is fixedly installed on the end of the auxiliary rod located in the groove. The auxiliary spring is located in the groove and is looped around the outer wall of the auxiliary component. One end of the auxiliary spring is fixedly connected to the auxiliary plate, and the other end is fixedly connected to the bottom of the groove.
[0012] Optionally, the activated carbon filter screen has a first auxiliary groove corresponding to the auxiliary rod. When the activated carbon filter screen slides into the purification box, one end of the auxiliary rod in one of the auxiliary components, located inside the funnel, is inserted into the first auxiliary groove. The HEPA filter screen has a second auxiliary groove corresponding to the auxiliary rod. When the HEPA filter screen slides into the purification box, one end of the auxiliary rod in another of the auxiliary components, located inside the funnel, is inserted into the second auxiliary groove.
[0013] Optionally, the end of the auxiliary rod located inside the funnel is shaped as a downward slope.
[0014] Optionally, a pull ring is fixedly installed on the auxiliary plate.
[0015] Optionally, a sealing gasket is installed between the inner wall of the funnel and the side wall of the activated carbon filter.
[0016] Optionally, an alkaline solution is provided inside the waste gas reaction tank.
[0017] In summary, this application includes at least one of the following beneficial technical effects:
[0018] The exhaust gas generated by the combustion furnace enters the purification chamber through the air inlet pipe. The activated carbon filter and HEPA filter in the purification chamber perform the first filtration of the exhaust gas. Then, the exhaust gas enters the air purification tank through the first connecting pipe, where it performs the second filtration. Next, the exhaust gas enters the exhaust gas reaction tank through the second connecting pipe, where it performs the third filtration. Finally, the exhaust gas after three filtrations is discharged through the exhaust pipe, which can reduce the environmental pollution caused by exhaust gas. Attached Figure Description
[0019] Figure 1 This is a cross-sectional view of a nickel-iron refining furnace according to an embodiment of this application.
[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle.
[0021] Figure 3 yes Figure 1 Enlarged view of section B in the middle.
[0022] Explanation of reference numerals in the attached drawings: 1. Combustion furnace body; 11. Air inlet pipe; 2. Purification box; 21. Connecting hole; 22. Baffle; 23. Arc plate; 24. Electric fan; 25. First connecting pipe; 3. Air purification tank; 31. Second connecting pipe; 4. Waste gas reaction tank; 41. Exhaust pipe; 5. Activated carbon filter; 51. First auxiliary groove; 6. HEPA filter; 61. Second auxiliary groove; 7. Auxiliary component; 71. Auxiliary rod; 72. Auxiliary spring; 73. Auxiliary plate; 731. Pull ring; 8. Funnel; 81. Groove; 82. Horizontal hole; 9. Sealing gasket. Detailed Implementation
[0023] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0024] This application discloses a nickel-iron refining furnace.
[0025] Reference Figure 1 , Figure 2 and Figure 3 A nickel-iron refining furnace includes a combustion furnace body 1, a purification chamber 2, an air purification tank 3, and a waste gas reaction tank 4. The air inlet of the purification chamber 2 is connected to the combustion furnace body 1 via an air inlet pipe 11. The air inlet of the air purification tank 3 is connected to the air outlet of the purification chamber 2 via a first connecting pipe 25. The air inlet of the waste gas reaction tank 4 is connected to the air outlet of the air purification tank 3 via a second connecting pipe 31. An exhaust pipe 41 is fixedly installed at the air outlet of the waste gas reaction tank 4. It should be noted that the waste gas reaction tank 4 contains an alkaline solution, which is used to neutralize the acidic substances in the waste gas.
[0026] The bottom of the purification chamber 2 has two connection holes 21. A funnel 8 is fixedly installed at one connection hole 21. The funnel 8 is open at both the top and bottom. Two opposite grooves 81 are formed on the outer wall of the funnel 8. The grooves 81 are connected to the inside of the funnel 8 through horizontal holes 82. An activated carbon filter 5 and a HEPA (High Efficiency Particle Air) filter 6 are vertically slidably mounted on the purification chamber 2 via an auxiliary component 7. The activated carbon filter 5 is closer to the air inlet of the purification chamber 2 than the HEPA filter 6. There are two auxiliary components 7: one assists the sliding of the activated carbon filter 5, and the other assists the sliding of the HEPA filter 6. An auxiliary component 7 includes two auxiliary rods 71, two auxiliary springs 72, and two auxiliary plates 73. Each auxiliary rod 71 corresponds to a groove 81. One end of the auxiliary rod 71 is located inside the groove 81, and the other end passes through a horizontal hole 82 and is located inside the funnel 8. The end of the auxiliary rod 71 inside the funnel 8 is shaped as a downward slope. The auxiliary plate 73 is fixedly installed on the end of the auxiliary rod 71 located in the groove 81. The auxiliary spring 72 is located inside the groove 81 and is looped around the outer wall of the auxiliary rod 71. One end of the auxiliary spring 72 is fixedly connected to the auxiliary plate 73, and the other end is fixedly connected to the bottom of the groove 81.
[0027] The activated carbon filter 5 has a first auxiliary groove 51 corresponding to the auxiliary rod 71. When the activated carbon filter 5 slides into the purification box 2, one end of the auxiliary rod 71 in one auxiliary component 7, located inside the funnel 8, is inserted into the first auxiliary groove 51. The HEPA filter 6 has a second auxiliary groove 61 corresponding to the auxiliary rod 71. When the HEPA filter 6 slides into the purification box 2, one end of the auxiliary rod 71 in another auxiliary component 7, located inside the funnel 8, is inserted into the second auxiliary groove 61.
[0028] When the activated carbon filter 5 needs to be installed, the operator slides the activated carbon filter 5 upwards. The end of the auxiliary rod 71 located inside the funnel 8 is sloping downwards. The activated carbon filter 5 applies pressure to the corresponding auxiliary rod 71 in a direction towards the outside of the funnel 8. Under pressure, the auxiliary rod 71 slides towards the horizontal hole 82. At this time, the auxiliary spring 72 is in a stretched state. When the first auxiliary groove 51 of the activated carbon filter 5 aligns with the horizontal hole 82, the auxiliary spring 72 returns to its original position, causing the auxiliary rod 71 to insert into the first auxiliary groove 51, thus fixing the activated carbon filter 5. When the activated carbon filter 5 needs to be removed, the operator moves the auxiliary plate 73 towards the outside of the funnel 8. The auxiliary plate 73 causes the auxiliary rod 71 to slide out of the first auxiliary groove 51, and the activated carbon filter 5 slides downwards without the fixing of the auxiliary rod 71.
[0029] Similarly, the installation and removal process for HEPA filter 6 and activated carbon filter 5 is the same.
[0030] To facilitate the movement of the auxiliary plate 73 by the workpiece personnel, a pull ring 731 is fixedly installed on the end of the auxiliary plate 73 that is away from the auxiliary rod 71.
[0031] To prevent the airflow from the exhaust gas entering from the air inlet of the purification chamber 2 from impacting the activated carbon filter, a baffle 22 is fixedly installed at the bottom inside the purification chamber 2. The baffle 22 is located to the left of the activated carbon filter. An electric fan 24 is fixedly installed between the baffle 22 and the left wall inside the purification chamber 2, blowing air upwards. An arc-shaped plate 23 is fixedly installed at the top inside the purification chamber 2. When exhaust gas enters the purification chamber 2, the electric fan 24 blows the exhaust gas upwards. After being guided by the arc-shaped plate 23, the exhaust gas passes through the activated carbon filter 5 and the HEPA filter 6 in sequence for filtration. During the filtration process, the funnel 8 can initially collect the particulate impurities contained in the exhaust gas that fall from the activated carbon filter 5 and the HEPA filter 6.
[0032] To prevent exhaust gas from leaking out at funnel 8, a sealing gasket 9 is installed between the inner wall of funnel 8 and the side wall of activated carbon filter 5. The outer wall of sealing gasket 9 abuts against the inner wall of funnel 8, and the inner wall of sealing gasket 9 abuts against the side wall of activated carbon filter 5. At the same time, a sealing gasket 9 is also installed between the inner wall of funnel 8 and the side wall of HEPA filter 6.
[0033] The implementation principle of a nickel-iron refining furnace according to an embodiment of this application is as follows: the exhaust gas generated by the combustion furnace body 1 enters the purification chamber 2 through the air inlet pipe 11. The activated carbon filter 5 and HEPA filter 6 in the purification chamber 2 perform the first filtration of the exhaust gas. Subsequently, the exhaust gas enters the air purification tank 3 through the first connecting pipe 25. The air purification tank 3 performs the second filtration of the exhaust gas. Then, the exhaust gas enters the exhaust gas reaction tank 4 through the second connecting pipe 31. The exhaust gas reaction tank 4 performs the third filtration of the exhaust gas. Finally, the exhaust gas after three filtrations is discharged through the exhaust pipe 41.
[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A nickel-iron refining furnace, characterized in that: It includes a combustion furnace body (1), a purification box (2), an air purification tank (3), and a waste gas reaction tank (4); The air inlet of the purification box (2) is connected to the combustion furnace body (1) through the air inlet pipe (11). The purification box (2) is equipped with an activated carbon filter (5) and a HEPA filter (6) through an auxiliary component (7). The air inlet of the air purifier (3) is connected to the air outlet of the purification box (2) via a first connecting pipe (25); The inlet of the waste gas reaction tank (4) is connected to the outlet of the air purification tank (3) through the second connecting pipe (31), and an outlet pipe is fixedly installed at the outlet of the waste gas reaction tank (4). The auxiliary component (7) is provided in two parts. One auxiliary component (7) is detachably connected to the activated carbon filter (5), and the other auxiliary component (7) is detachably connected to the HEPA filter (6). The purification box (2) has two connection holes (21) at its bottom. A funnel (8) is installed at one of the connection holes (21). Each funnel (8) corresponds to an auxiliary component (7). A groove (81) is provided on the outer wall of the funnel (8). The groove (81) is connected to the inside of the funnel (8) through a horizontal hole (82). The auxiliary component (7) includes an auxiliary rod (71), an auxiliary spring (72), and an auxiliary plate (73). One end of the auxiliary rod (71) is located in the groove (81), and the other end passes through the horizontal hole (82) and is located inside the funnel (8). The auxiliary plate (73) is fixedly installed at the end of the auxiliary rod (71) located in the groove (81). The auxiliary spring (72) is located in the groove (81) and is looped around the outer wall of the auxiliary component. One end of the auxiliary spring (72) is fixedly connected to the auxiliary plate (73), and the other end is fixedly connected to the bottom of the groove (81). The activated carbon filter (5) has a first auxiliary groove (51) corresponding to the auxiliary rod (71). When the activated carbon filter (5) slides into the purification box (2), one end of the auxiliary rod (71) in one of the auxiliary components (7) is inserted into the first auxiliary groove (51) inside the funnel (8). The HEPA filter (6) has a second auxiliary groove (61) corresponding to the auxiliary rod (71). When the HEPA filter (6) slides into the purification box (2), one end of the auxiliary rod (71) in another auxiliary component (7) is inserted into the second auxiliary groove (61) inside the funnel (8). The auxiliary rod (71) has a downward-sloping end inside the funnel (8).
2. The nickel-iron refining furnace according to claim 1, characterized in that: A pull ring (731) is fixedly installed on the auxiliary plate (73).
3. The nickel-iron refining furnace according to claim 1, characterized in that: A sealing gasket (9) is installed between the inner wall of the funnel (8) and the side wall of the activated carbon filter (5).
4. The nickel-iron refining furnace according to claim 1, characterized in that: The waste gas reaction tank (4) is equipped with an alkaline solution.