A dust removal and purification device for direct blowing furnace gas of antimony smelting blast furnace

Abstract

The application belongs to the technical field of furnace gas dust removal and purification, and discloses a kind of antimony smelting blast furnace direct blowing furnace gas dust removal and purification device, including blast furnace body, the top of blast furnace body is fixedly connected with quenching tower, the end of quenching tower is fixedly connected with activated carbon hopper, activated carbon hopper is fixedly connected with cyclone dust collector by air pump, by setting the cooperation of first baffle, rotating rod, push rod and conical cap and other structures, and then it is convenient to adjust the size of discharging gap, according to the flow stress of flue gas, the greater the flue gas velocity, the greater the first baffle extrusion rotating rod rotation amplitude, finally make the amplitude of push rod extrusion conical cap also greater, that is, the greater the gap of opening, the more carbon powder falls, and airflow blows cannot stabilize the gap, but after maintaining a certain gap, it has a slight vibration amplitude, so it can also effectively enhance the smoothness and uniformity of discharging, improve the adaptability of carbon powder discharging.

Description

Technical Field

[0001] This invention belongs to the field of furnace gas dust removal and purification technology, specifically a dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace. Background Technology

[0002] After antimony is smelted in a blast furnace, the flue gas usually passes through a waste heat boiler, cooling flue pipes, settling chamber, cyclone dust collector, and bag filter, and finally passes through a desulfurization tower to discharge the purified gas. However, the raw materials for antimony smelting may contain chlorine, such as chlorides and chlorinated plastics. During the high-temperature smelting process, if the chlorine source coexists with heavy metals such as copper and iron, it may catalyze the formation of dioxin precursors. Dioxin-like persistent organic pollutants may cover the surface of the desulfurization catalyst, reducing its activity and affecting the desulfurization efficiency, or react with desulfurizing agents such as limestone and caustic soda to generate by-products, increasing the difficulty of subsequent treatment.

[0003] A prior art document, CN219308338U, discloses a dioxin adsorption activated coke injection device for smelting flue gas. The device includes a frame, a cylinder mounted on the frame, an activated coke feed hopper fixed to the top of the cylinder, an outlet jet pipe installed at the bottom of the cylinder, an inlet jet pipe installed on one side of the cylinder, and an air compressor for providing injection pressure. Control devices for airflow are installed between the activated coke feed hopper and the cylinder, and between the outlet jet pipe and the cylinder. The device includes a regulating valve for stopping the flow of air. The air inlet ends of both the outlet and inlet jet pipes are connected to the air compressor. The outlet end of the outlet jet pipe is connected to the air inlet of the baghouse dust collection chamber, and the air inlet end of the inlet jet pipe is also connected to the flue gas outlet of the corresponding metallurgical furnace via a pipe. Through the structural design of the device, combined with baghouse dust collection, most of the dioxins in the flue gas can be collected, thereby reducing dioxin emissions from the flue gas, improving the flue gas purification efficiency, and reducing the impact on the environment.

[0004] Although the above-mentioned device uses an air intake jet pipe and an air compressor to provide jet pressure to spray active coke droplets for dioxin adsorption in flue gas, it requires an additional driving source to compress and spray the flue gas, such as a compressor or jet pump. These devices are energy-intensive and require regular maintenance, which significantly increases operating costs. Moreover, the flue gas may contain particulate matter and corrosive gases, and pressurization will exacerbate wear and corrosion of the equipment, shorten its service life, and is not conducive to long-term use. Summary of the Invention

[0005] The purpose of this invention is to provide a dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace that adaptively adjusts feeding and rapidly mixes to remove harmful substances, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dust removal and purification device for direct blowing furnace gas in antimony smelting, comprising a blast furnace body, a quench tower fixedly connected to the top of the blast furnace body, an activated carbon hopper fixedly connected to the end of the quench tower, a cyclone dust collector fixedly connected to the activated carbon hopper via an air pump, a bag filter fixedly connected to the cyclone dust collector via a fan, a desulfurization tower fixedly connected to the bag filter, and an exhaust port provided on the side wall of the desulfurization tower, further comprising:

[0007] An adaptive feeding mechanism is connected to an activated carbon hopper;

[0008] A uniform mixing mechanism is located on an adaptive feeding mechanism;

[0009] The adaptive feeding mechanism includes a pipe fixedly connected to the quench tower, the bottom of the activated carbon hopper is fixedly connected to the side wall of the pipe through a valve, and a first baffle plate is slidably connected to the inner cavity of the pipe, with a slanted opening at the bottom of the first baffle plate.

[0010] Preferably, the adaptive feeding mechanism further includes a vertical plate, a first groove is provided on the top of the first baffle plate, the vertical plate is slidably connected in the first groove, a sealing plate is fixed to the outer wall of the vertical plate, the sealing plate slidably abuts against the upper side of the pipe, and the sealing plate is located at the top of the first groove.

[0011] Preferably, a sliding box is slidably sleeved on the outer wall of the sealing plate, the bottom of the sliding box is fixed to the pipe, and a second sliding groove is opened on the top of the sliding box at the same position as the first sliding groove, and the top of the vertical plate slides through the second sliding groove.

[0012] Preferably, a rotating rod is rotatably connected to the top of the vertical plate, a support plate is rotatably connected to the middle of the rotating rod, a guide rod slides through the bottom of the support plate, and the vertical plate is elastically connected to the support plate through the guide rod.

[0013] Preferably, the end of the rotating rod is provided with an elongated slot, and the rotating rod is movably connected to a slider through the elongated slot. The end of the slider is fixedly connected to a telescopic rod, and the outer wall of the telescopic rod is slidably connected to a sleeve. The sleeve is fixedly inserted through the side wall of the protective shell and the activated carbon hopper.

[0014] Preferably, the end of the telescopic rod away from the rotating rod extends into the interior of the activated carbon hopper, and the end of the conical cap is rotatably connected to a push rod, the end of which is rotatably connected to the conical cap.

[0015] Preferably, the top of the inner cavity of the conical cap is rotatably connected to a ball shaft, and the bottom of the ball shaft is fixed to the inner cavity of the activated carbon hopper by a bracket.

[0016] Preferably, the uniform mixing mechanism includes a second baffle plate fixed to the inner cavity of the pipe, the bottom of the second baffle plate also has a beveled opening, and a straight pipe is fixed to the middle of the second baffle plate.

[0017] Preferably, a guide plate is fixedly connected to one end of the straight pipe, and an arc-shaped pipe is fixedly connected to the other end of the straight pipe. Both sides of the arc-shaped pipe are fixedly connected to the upper side of the pipe, and an air inlet hood is fixedly connected to the end of the arc-shaped pipe. The inner side of the air inlet hood is fixedly connected to the inside of the pipe.

[0018] Preferably, a first spiral blade is uniformly fixed to the outer wall of the straight pipe, a second spiral blade is fixed to the end of the first spiral blade, and the top of the second spiral blade is fixed to the inner cavity of the pipe through a connecting block. The outer diameters of the first and second spiral blades are both set to be smaller than the inner diameter of the pipe.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention, through the combination of a first baffle plate, a rotating rod, a push rod, and a conical cap, facilitates adaptive adjustment of the material feeding gap. Based on the magnitude of the flue gas flow stress, the greater the flue gas velocity, the greater the amplitude of the rotation of the rotating rod caused by the first baffle plate, ultimately resulting in a larger amplitude of the push rod pressing against the conical cap. This means a larger opening gap, allowing more toner to fall. Furthermore, the airflow cannot stabilize the gap; instead, it maintains a certain gap with a slight vibration amplitude. This effectively enhances the smoothness and uniformity of material feeding, prevents toner blockage, and improves the adaptability of toner feeding.

[0021] This invention facilitates the uniform mixing of flue gas and carbon powder by combining a first spiral blade, a second spiral blade, and a second baffle plate. The flue gas enters through the oblique inlet of the second baffle plate, transitions along the second spiral blade to form a spiral airflow, and carbon powder particles are added midway. When it reaches the first spiral blade, it forms a stable spiral airflow that moves forward. With the help of the arc-shaped pipe and straight pipe that flow in the opposite direction, the flue gas and carbon powder are evenly mixed, effectively removing harmful substances such as dioxins and reducing the difficulty of subsequent flue gas purification. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall process of the present invention;

[0023] Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0024] Figure 3 This is a schematic diagram showing the structural fit between the arc-shaped tube and the pipe of the present invention;

[0025] Figure 4 This is a schematic diagram of the side cross-section structure of the present invention;

[0026] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle;

[0027] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at point C in the middle;

[0028] Figure 7 This is a side view of the structure of the present invention;

[0029] Figure 8 This is a schematic diagram showing the structural fit between the slider and the telescopic rod of the present invention;

[0030] Figure 9 This is a schematic diagram showing the structural fit between the second baffle and the straight pipe of the present invention.

[0031] In the picture:

[0032] 100. Blast furnace body; 200. Quenching tower; 300. Activated carbon hopper; 400. Cyclone dust collector; 500. Bag filter dust collector; 600. Desulfurization tower; 700. Exhaust port; 800. Self-adaptive feeding mechanism; 810. Pipeline; 820. Sliding box; 830. Protective shell; 840. First baffle plate; 850. Sealing plate; 860. Vertical plate; 870. Rotating rod; 880. Telescopic rod; 890. Conical cap; 8100. Ball shaft ; 8110, bracket; 8120, support plate; 8130, guide rod; 8140, first slide groove; 8150, second slide groove; 8160, elongated slot; 8170, sleeve; 8180, push rod; 8190, slider; 900, uniform mixing mechanism; 910, arc-shaped tube; 920, air inlet hood; 930, second baffle plate; 940, guide plate; 950, straight pipe; 960, first spiral blade; 970, second spiral blade. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 9As shown, this invention provides a dust removal and purification device for direct blowing furnace gas in antimony smelting, comprising a blast furnace body 100, a quench tower 200 fixedly connected to the top of the blast furnace body 100, an activated carbon hopper 300 fixedly connected to the end of the quench tower 200, a cyclone dust collector 400 fixedly connected to the activated carbon hopper 300 via an air pump, a bag filter 500 fixedly connected to the cyclone dust collector 400 via a fan, a desulfurization tower 600 fixedly connected to the bag filter 500, and an exhaust port 700 provided on the side wall of the desulfurization tower 600. The device also includes:

[0035] An adaptive feeding mechanism 800 is connected to an activated carbon hopper 300.

[0036] Uniform mixing mechanism 900 is located on adaptive feeding mechanism 800;

[0037] The adaptive feeding mechanism 800 includes a pipe 810 fixedly connected to the quench tower 200, the bottom of the activated carbon hopper 300 being fixedly connected to the side wall of the pipe 810 via a valve, and a first baffle plate 840 being slidably connected to the inner cavity of the pipe 810, with a slanted opening at the bottom of the first baffle plate 840.

[0038] The above scheme utilizes the principle that dioxins are easily resynthesized in the temperature range of 300 to 500 degrees Celsius. Rapidly lowering the flue gas temperature to below 200 degrees Celsius via the quench tower 200 effectively inhibits dioxin regeneration. The furnace gas generated by the blast furnace body 100 is rapidly cooled by the quench tower 200 and then connected to the activated carbon hopper 300. An adaptive feeding mechanism 800 automatically adds activated carbon to the furnace gas to enhance the adsorption effect of harmful substances. After adsorption by the activated carbon, the flue gas flows into the cyclone dust collector 400, which uses centrifugal force to remove large particulate impurities. It then enters the bag filter 500 for further filtration of fine particles. Next, after treatment by the desulfurization tower 600, the flue gas meets emission standards and is safely discharged through the exhaust port 700 on the side wall. The uniform mixing mechanism 900 and the adaptive feeding mechanism 800 work together to ensure thorough mixing of the activated carbon and flue gas, thereby improving the overall purification efficiency. The close connection and functional coordination of all components form a highly efficient flue gas purification system.

[0039] like Figures 3 to 8As shown, the adaptive feeding mechanism 800 also includes a vertical plate 860. A first groove 8140 is formed at the top of the first baffle plate 840. The vertical plate 860 is slidably connected within the first groove 8140. A sealing plate 850 is fixedly connected to the outer wall of the vertical plate 860. The sealing plate 850 slidably abuts against the upper side of the pipe 810, and is located at the top of the first groove 8140. A sliding box 820 is slidably sleeved on the outer wall of the sealing plate 850. The bottom of the sliding box 820 is fixedly connected to the pipe 810. A second groove 8150, located at the same position as the first groove 8140, is formed at the top of the sliding box 820. The top of the vertical plate 860 slides through the second groove 8150. A rotating rod 870 is rotatably connected to the top of the vertical plate 860. A support plate 8120 is rotatably connected to the middle of the rotating rod 870. A guide rod 81 passes through the bottom of the support plate 8120. 30. The vertical plate 860 is elastically connected to the support plate 8120 via the guide rod 8130; the end of the rotating rod 870 is provided with a long waisted slot 8160, and the rotating rod 870 is movably connected to the slider 8190 via the long waisted slot 8160. The end of the slider 8190 is fixedly connected to the telescopic rod 880, and the outer wall of the telescopic rod 880 is slidably connected to the sleeve 8170. The sleeve 8170 is fixedly inserted through the protective shell 830 and the side wall of the activated carbon hopper 300; the end of the telescopic rod 880 away from the rotating rod 870 extends into the interior of the activated carbon hopper 300, and the end of the conical cap 890 is rotatably connected to the push rod 8180, and the end of the push rod 8180 is rotatably connected to the conical cap 890; the top of the inner cavity of the conical cap 890 is rotatably connected to the ball shaft 8100, and the bottom of the ball shaft 8100 is fixedly connected to the inner cavity of the activated carbon hopper 300 via the bracket 8110.

[0040] The above scheme is adopted as follows: Since the carbon powder particle size is usually between five and twenty micrometers, large particles larger than five micrometers can be removed by the cyclone dust collector 400. Then, the remaining dust particles smaller than five micrometers, such as antimony oxide powder with a particle size of one to three micrometers, can be collected by the bag dust collector 500 and used as raw materials for the production of refined antimony. The recovered antimony oxide powder has a high antimony content, which can significantly reduce production costs. The flue gas enters the pipe 810 and first comes into contact with the first baffle plate 840. Due to the elastic connection between the first baffle plate 840 and the support plate 8120 through the vertical plate 860 and the guide rod 8130, the airflow causes the first baffle plate 840 to move axially. This movement drives the vertical plate 860 to rotate one end of the rotating rod 870. Relying on the lever principle, the other end of the rotating rod 870 pulls the telescopic rod 880 to extend outward from the activated carbon hopper 300 through the slider 8190. As the telescopic rod 880 moves, the push rod 8180 also moves, thus pressing the conical cap 890 upward. The top of the conical cap 890 is connected via a ball joint 8100, and the sidewalls are pushed upward, causing the conical cap 890 to rotate around the ball joint 8100. During the continuous blowing of gas, in conjunction with the elastic force of the spring, the conical cap 890 undergoes a reciprocating oscillating motion. This motion causes the carbon powder in the activated carbon hopper 300 to continuously sway and fall through the gap between the conical cap 890 and the activated carbon hopper 300, eventually converging at the bottom of the activated carbon hopper 300 and entering the pipe 810, where it is fully mixed with the flue gas. Furthermore, the oscillation amplitude of the conical cap 890 can be adaptively controlled according to the different pushing and squeezing forces generated on the first baffle plate 840 based on the flue gas velocity. When the conical cap 890 is stationary, the gap is at its smallest. However, as the flue gas velocity increases, the rotation amplitude of the extrusion rod 870 increases, thereby increasing the extrusion amplitude of the conical cap 890 and widening the opening gap, thus increasing the amount of toner fed. This design not only improves the flowability of the toner but also avoids the problem of toner clogging.

[0041] like Figure 3 , Figure 4 and Figure 9 As shown, the uniform mixing mechanism 900 includes a second baffle plate 930 fixedly connected to the inner cavity of the pipe 810. The bottom of the second baffle plate 930 is also provided with a slanted opening. A straight pipe 950 is fixedly connected to the middle of the second baffle plate 930. A guide plate 940 is fixedly connected to one end of the straight pipe 950, and an arc-shaped pipe 910 is fixedly connected to the other end of the straight pipe 950. Both sides of the arc-shaped pipe 910 are fixedly connected to the upper side of the pipe 810, and the end of the arc-shaped pipe 910 is fixedly connected to an air inlet hood 920. The inner side of the air inlet hood 920 is fixedly connected to the inside of the pipe 810. A first spiral blade 960 is uniformly fixedly connected to the outer wall of the straight pipe 950. A second spiral blade 970 is fixedly connected to the end of the first spiral blade 960, and the top of the second spiral blade 970 is fixedly connected to the inner cavity of the pipe 810 through a connecting block. The outer diameters of the first spiral blade 960 and the second spiral blade 970 are both set to be smaller than the inner diameter of the pipe 810.

[0042] The above scheme employs a design where the oblique opening at the bottom of the second baffle 930 is smaller than that of the first baffle 840. This provides a flow channel for some of the carbon powder that falls to the bottom of the pipe 810, preventing carbon powder from accumulating below the first spiral blade 960 and causing blockage. Both the first baffle 840 and the second baffle 930 have oblique openings at their bottoms, with the second baffle 930 having a smaller opening. Therefore, the airflow first enters obliquely from the bottom of the first baffle 840, then forms a spiral airflow along the second spiral blade 970. At this point, the second spiral blade 970 effectively adsorbs dioxins and other organic matter in the flue gas and continues to propel it into the area of ​​the first spiral blade 960, forming a stable spiral forward airflow. After being blocked by the second baffle 930, the airflow enters the arc-shaped pipe 910, generating a backflow to ensure uniform airflow distribution, and finally exits through the straight pipe 950. The guide plate 940 is responsible for guiding the airflow into the pipe 810 for subsequent steps. By removing organic matter such as dioxins before flue gas purification, chemical reactions between the flue gas and the catalyst are avoided when the flue gas enters the desulfurization tower 600, thus creating more ideal conditions for the subsequent purification treatment of the flue gas.

[0043] Working principle and usage process of this invention:

[0044] First, antimony is smelted in the blast furnace 100. The high-temperature flue gas first enters the quench tower 200 to rapidly reduce the flue gas temperature to below 200 degrees Celsius, which can effectively inhibit the regeneration of dioxins and facilitate subsequent purification treatment. The dioxins that have already been generated flow through the activated carbon hopper 300 with the flue gas. Under the setting of the adaptive feeding mechanism 800, activated carbon powder is automatically released according to the flue gas flow rate. Then, it is efficiently mixed by the uniform mixing mechanism 900, which effectively enhances the absorption of dioxins and other harmful substances in the flue gas. Then, the cyclone dust collector 400 removes large particles of impurities larger than five microns. Next, the bag dust collector 500 collects the remaining small particulate dust, mainly antimony oxide powder, which is easy to recycle. Finally, the gas passes through the desulfurization tower 600 to remove sulfides. After reaching the purification standard, it is finally discharged through the exhaust port 700.

[0045] Secondly, the valve of the activated carbon hopper 300 is opened, and the flue gas enters the pipe 810. It first contacts the first baffle plate 840. Since the first baffle plate 840 is elastically connected to the support plate 8120 through the vertical plate 860 and the guide rod 8130, the airflow blows the first baffle plate 840, causing it to move axially. Then, the vertical plate 860 drives one end of the rotating rod 870 to rotate. Under the action of the lever principle, the other end of the rotating rod 870 can stretch the telescopic rod 880 towards the outside of the activated carbon hopper 300 through the slider 8190. When the telescopic rod 880 moves, it can drive one end of the push rod 8180 to move. Therefore, the other end of the push rod 8180 can squeeze the conical cap 890 upward. Since the top of the conical cap 890 is connected through the ball shaft 8100, the side wall is pushed upward, which can make the conical cap 890 rotate around the ball shaft 8100. During the continuous blowing of gas, the spring's elastic force causes the conical cap 890 to oscillate back and forth, continuously agitating the carbon powder filled in the activated carbon hopper 300. This carbon powder falls through the gap between the conical cap 890 and the activated carbon hopper 300, eventually converging at the bottom of the activated carbon hopper 300 and entering the pipe 810 to mix with the flue gas. Furthermore, the oscillation amplitude of the conical cap 890 can be adaptively controlled according to the flue gas velocity. When the conical cap 890 is stationary, the gap is smallest. As the flue gas velocity increases, the rotation amplitude of the compression rod 870 increases, ultimately causing the push rod 8180 to compress the conical cap 890 more, resulting in a larger opening and a greater amount of carbon powder being fed. Moreover, the airflow cannot completely stabilize the gap; instead, it maintains a certain gap while exhibiting a slight vibration amplitude. This effectively enhances the smoothness and uniformity of the feeding, preventing carbon powder blockage.

[0046] Finally, since both the first baffle plate 840 and the second baffle plate 930 have oblique openings at their bottoms, and the opening of the second baffle plate 930 is smaller, the airflow first enters obliquely from the bottom of the first baffle plate 840, and then gradually forms a spiral airflow along the second spiral blade 970. Carbon particles are added midway and adsorb dioxins and other organic matter in the flue gas. The airflow continues to advance to the area of ​​the first spiral blade 960, where a stable spiral airflow has been formed. Finally, the airflow is blocked by the second baffle plate 930 and enters the arc-shaped pipe 910 from the air inlet hood 920 to generate a backflow, resulting in a uniform airflow distribution. Finally, the airflow is discharged through the straight pipe 950, and the guide plate 940 guides the airflow into the pipe 810 to continue to the next step. Because the outer diameters of the first spiral blade 960 and the second spiral blade 970 are smaller than the inner diameter of the pipe 810, even if carbon particles fall off during the spiral advance of the airflow, they can still travel along the bottom of the pipe 810 and directly reach the bottom of the second baffle plate 930. Finally, they are again obliquely cut and mixed into the airflow discharged from the straight pipe 950, thoroughly mixing the carbon particles. By removing dioxins and other organic matter before flue gas purification, it effectively prevents the flue gas from entering the desulfurization tower 600 and causing a chemical reaction between dioxins and the catalyst, thus facilitating subsequent flue gas purification.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust removal and purification device for direct blowing furnace gas in antimony smelting, comprising a blast furnace body (100), wherein a quench tower (200) is fixedly connected to the top of the blast furnace body (100), an activated carbon hopper (300) is fixedly connected to the end of the quench tower (200), the activated carbon hopper (300) is fixedly connected to a cyclone dust collector (400) via an air pump, the cyclone dust collector (400) is fixedly connected to a bag filter (500) via a fan, the bag filter (500) is fixedly connected to a desulfurization tower (600), and an exhaust port (700) is provided on the side wall of the desulfurization tower (600), characterized in that: Also includes: An adaptive feeding mechanism (800) is connected to an activated carbon hopper (300); A uniform mixing mechanism (900) is located on an adaptive feeding mechanism (800); The adaptive feeding mechanism (800) includes a pipe (810) fixedly connected to the quench tower (200), the bottom of the activated carbon hopper (300) is fixedly connected to the side wall of the pipe (810) through a valve, and a first baffle plate (840) is slidably connected to the inner cavity of the pipe (810), and the bottom of the first baffle plate (840) is provided with a slanted opening.

2. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 1, characterized in that: The adaptive feeding mechanism (800) further includes a vertical plate (860), and a first groove (8140) is provided on the top of the first baffle plate (840). The vertical plate (860) is slidably connected in the first groove (8140). A sealing plate (850) is fixedly connected to the outer wall of the vertical plate (860). The sealing plate (850) slidably abuts against the upper side of the pipe (810), and the sealing plate (850) is located at the top of the first groove (8140).

3. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 2, characterized in that: The outer wall of the sealing plate (850) is slidably fitted with a sliding box (820), the bottom of the sliding box (820) is fixed to the pipe (810), and the top of the sliding box (820) is provided with a second sliding groove (8150) at the same position as the first sliding groove (8140). The top of the vertical plate (860) slides through the second sliding groove (8150).

4. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 3, characterized in that: The top of the vertical plate (860) is rotatably connected to a rotating rod (870), the middle of the rotating rod (870) is rotatably connected to a support plate (8120), the bottom of the support plate (8120) is slidably connected to a guide rod (8130), and the vertical plate (860) is elastically connected to the support plate (8120) through the guide rod (8130).

5. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 4, characterized in that: The end of the rotating rod (870) is provided with an elongated slot (8160). The rotating rod (870) is movably connected to a slider (8190) through the elongated slot (8160). The end of the slider (8190) is fixedly connected to a telescopic rod (880). The outer wall of the telescopic rod (880) is slidably connected to a sleeve (8170). The sleeve (8170) is fixedly inserted through the side wall of the protective shell (830) and the activated carbon hopper (300).

6. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 5, characterized in that: The end of the telescopic rod (880) away from the rotating rod (870) extends into the interior of the activated carbon hopper (300), and the end of the conical cap (890) is rotatably connected to the push rod (8180), the end of the push rod (8180) being rotatably connected to the conical cap (890).

7. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 6, characterized in that: The top of the inner cavity of the conical cap (890) is rotatably connected to a ball shaft (8100), and the bottom of the ball shaft (8100) is fixed to the inner cavity of the activated carbon hopper (300) by a bracket (8110).

8. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 1, characterized in that: The uniform mixing mechanism (900) includes a second baffle plate (930) fixed to the inner cavity of the pipe (810). The bottom of the second baffle plate (930) is also provided with a slanted opening, and a straight pipe (950) is fixed to the middle of the second baffle plate (930).

9. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 8, characterized in that: One end of the straight pipe (950) is fixedly connected to a guide plate (940), and the other end of the straight pipe (950) is fixedly connected to an arc-shaped pipe (910). Both sides of the arc-shaped pipe (910) are fixedly connected to the upper side of the pipe (810), and the end of the arc-shaped pipe (910) is fixedly connected to an air inlet hood (920). The inner side of the air inlet hood (920) is fixedly connected to the inside of the pipe (810).

10. The dust removal and purification device for direct blowing furnace gas in antimony smelting blast furnace according to claim 9, characterized in that: The outer wall of the straight pipe (950) is uniformly fixed with a first spiral blade (960), the end of the first spiral blade (960) is fixed with a second spiral blade (970), and the top of the second spiral blade (970) is fixed to the inner cavity of the pipe (810) through a connecting block. The outer diameter of the first spiral blade (960) and the second spiral blade (970) are both set to be smaller than the inner diameter of the pipe (810).

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