A continuous fuming furnace with a reflux type spiral slag notch

Abstract

The present invention belongs to the technical field of fuming furnaces, and discloses a continuous fuming furnace with a reflux spiral slag outlet. The continuous fuming furnace with a reflux spiral slag outlet includes a furnace body. The top wall of the furnace body is fixedly communicated with a feeding pipe and an air outlet pipe respectively. The feeding pipe is used for injecting liquid slag, and the air outlet pipe is used for outputting the reduced gas. The bottom end of the side wall of the furnace body is provided with a slag discharge port. The bottom of the furnace body is fixedly installed with a driving motor through a bracket. The output end of the driving motor is fixedly connected with a special-shaped disc. A material guiding mechanism is arranged inside the furnace body. The continuous fuming furnace with a reflux spiral slag outlet can increase the contact area between the liquid slag and air, improve the reaction rate and reaction time by the cooperation of the material guiding mechanism and the coal blowing mechanism. At the same time, the coal blowing design of the coal blowing mechanism enables the pulverized coal and air to be mixed in the furnace body, which can greatly reduce the wear of the air duct and improve the service life of the equipment, and solves the problems raised in the background technology.

Description

Technical Field

[0001] The present invention relates to the technical field of fuming furnaces, and specifically to a continuous fuming furnace with a reflux spiral slag outlet. Background Art

[0002] A fuming furnace is a device that blows a mixture of air and pulverized coal into liquid slag, so that some valuable metals in the slag are volatilized in the form of metals, oxides or sulfides.

[0003] Nowadays, fuming furnaces often adopt a channel-type structure. Although this can increase the reaction time between pulverized coal-air and slag, the contact area between the two is small, and there is still room for improvement in the reaction rate. Therefore, we have proposed a continuous fuming furnace with a reflux spiral slag outlet. Summary of the Invention

[0004] The invention purpose of the present invention is to provide a continuous fuming furnace with a reflux spiral slag outlet, which can make the liquid slag flow spirally in the furnace body, help to improve its reaction rate and accelerate volatilization.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions: A continuous fuming furnace with a reflux spiral slag outlet, including a furnace body. The top wall of the furnace body is respectively fixedly communicated with a feeding pipe and an air outlet pipe. The feeding pipe is used for inputting liquid slag, and the air outlet pipe is used for outputting the reduced gas. The bottom end of the side wall of the furnace body is provided with a slag discharge port. In actual implementation, a screw conveyor mechanism can be installed under the partition for waste discharge, which is a well-known technology in the technical field and will not be elaborated here. The bottom of the furnace body is fixedly installed with a driving motor through a bracket. The output end of the driving motor is fixedly connected with a special-shaped disk. A material guiding mechanism is arranged inside the furnace body, and a coal blowing mechanism is also arranged inside the furnace body. The coal blowing mechanism is located inside the material guiding mechanism;

[0006] The material guiding mechanism includes:

[0007] A partition, which is fixedly connected to the inner wall of the furnace body;

[0008] A conical tube, the thin end of which is fixedly connected to the middle of the partition and communicated with the lower side of the partition, and the thick end of the conical tube is fixedly connected to the inner wall of the furnace body;

[0009] An annular material guiding groove, which is arranged on the upper half of the inner wall of the conical tube;

[0010] A spiral groove, which is arranged on the lower half of the inner wall of the conical tube for guiding slag material;

[0011] A communication groove, which is arranged in the middle of the inner wall of the conical tube for communicating the annular material guiding groove and the spiral groove;

[0012] The coal-blowing mechanism includes:

[0013] A vertical rod, which is fixedly connected to the inner bottom wall of the furnace body and is inside the conical pipe;

[0014] A coal-blowing assembly, which is arranged at the top of the vertical rod for blowing out pulverized coal;

[0015] A top-material assembly, which is arranged above the coal-blowing assembly for sprinkling slag.

[0016] The compact design enables the pulverized coal-air blown by the coal-blowing assembly to directly blow the liquid slag in the furnace. With the cooperation of the material-guiding assembly for the diversion of the slag, the contact area between the two is greatly increased, and the reaction rate is greatly improved.

[0017] Preferably, the coal-blowing assembly includes a sleeve, a spacer ring, a coal supply pipe, a piston disk, a driving rod, a sphere, a coal-blowing hole, a coal supply hole, a filter screen, a gas supply pipe, a check valve and a blowing pipe. The sleeve is fixedly connected to the top of the vertical rod. A number of spacer rings are equidistantly arranged in the sleeve. The coal supply pipe is fixedly connected to the middle of the top of the vertical rod, and the outer wall of the coal supply pipe is fixedly connected to the inner wall of the spacer ring. The top of the coal supply pipe penetrates through the top shell and the top wall of the furnace body to the outside. A piston disk is arranged in the sleeve between adjacent spacer rings. A number of driving rods are in the sleeve. The driving rods are made of heat-resistant steel rods, and the selected model should ensure that they have good flexibility. The driving rods are inserted through the corresponding through holes on the spacer rings and are equipped with linear bearings. The bottom end of the driving rod penetrates through the vertical rod and the bottom wall of the furnace body to the outside of the furnace and is fixedly connected to a sphere. The sphere contacts the top surface of the special-shaped disk. The driving rods are fixedly connected to the piston disks;

[0018] The coal-blowing holes are opened at the positions on the sleeve between two adjacent spacer rings. The coal supply holes corresponding to the coal-blowing holes are opened on the coal supply pipe and are provided with filter screens. The gas supply pipe is arranged inside the coal supply pipe. The air inlet end of the gas supply pipe penetrates through the coal supply pipe to the outside of the furnace and is provided with a check valve. The lower side of the position on the gas supply pipe corresponding to the coal supply hole communicates with one end of the blowing pipe. The other end of the blowing pipe penetrates through the coal supply pipe and communicates with the inside of the sleeve. The positions of the coal-blowing holes and the blowing pipe should be designed to be relatively high within the range. When the piston disk moves, it does not contact the spacer ring, which can prevent the coal-blowing holes and the blowing pipe from being blocked by the piston disk. The filter screen can separate the pulverized coal, which helps the air and the pulverized coal to be mixed by the suction of the piston disk. And when the piston disk moves upward, the filter screen is under air pressure to prevent the pulverized coal from blocking the filter screen. The mesh number of the filter screen should be selected to ensure that the pulverized coal can pass smoothly. A better choice is that the mesh number of the pulverized coal should be - times that of the filter screen.

[0019] The piston-type design can rhythmically supply air and pulverized coal into the furnace body, and at the same time realize the re-mixing when the two are discharged, reducing the wear of the gas supply pipeline. Its working rate is controlled by a driving motor and can be adjusted according to the actual working conditions.

[0020] Preferably, the top feeding assembly includes a conical cover, a top feeding shell, a top feeding part and a connecting piece. The bottom end of the conical cover is fixedly connected to the top end of the sleeve. The top feeding shell is bowl-shaped and is fixedly connected to the top opening of the conical cover. A plurality of top feeding parts are arranged on the top feeding shell. The top end of the driving rod extends into the conical cover and is connected to the top feeding part through the connecting piece.

[0021] The top feeding assembly and the coal blowing assembly can be used to sprinkle the incoming liquid slag onto the conical pipe, increasing the surface area of the liquid slag. The structure is simple and reliable, and it can preheat pulverized coal and air at the same time.

[0022] Preferably, the top feeding part includes a top feeding hole and a top feeding spring plate. A plurality of top feeding holes are arranged in a circular pattern on the top feeding shell. The top feeding spring plate is welded inside the top feeding shell. The cross-section of the top feeding spring plate is arc-shaped. The connecting piece is located in the middle of the lower surface of the top feeding spring plate. The connecting piece is a ball shaft.

[0023] Preferably, the top feeding part includes a top feeding hole and a top feeding plate. A plurality of top feeding holes are arranged in a circular pattern on the top feeding shell. The top feeding plate is inserted into the top feeding shell. The connecting piece is located in the middle of the lower surface of the top feeding plate. The connecting piece is a steel plate. The axial direction of the top feeding hole is the same as the direction pointed by the top end of the driving rod.

[0024] Preferably, a guiding tube is fixedly connected to the position of the driving rod corresponding to the inner wall of the conical cover through a connecting rod. The driving rod is inserted into the guiding tube.

[0025] Preferably, the number of driving rods is four, and the four driving rods are arranged in a circular pattern with reference to the coal supply pipe.

[0026] Preferably, mounting plates are arranged on the left and right walls of the furnace body. The mounting plates are connected to the side wall of the furnace body through shock pads. A vibration motor is fixedly installed on the mounting plates. One end of a vibration transmission rod is fixedly connected to the inner side of the mounting plates. The other end of the vibration transmission rod penetrates the furnace body and is connected to the outer wall of the conical pipe. With the design of the vibration motor, vibration can accelerate the flow rate of the liquid slag in the spiral groove, ensuring the effectiveness of the structure.

[0027] Preferably, a limiting ring is fixedly connected to the position of the driving rod outside the furnace body. The limiting ring is connected to the furnace body through a compression spring.

[0028] Preferably, the discharging end of the feeding pipe points to the middle of the top material shell. The top surface edge of the special-shaped disk is in a continuous undulating shape, and the number of protruding points of the special-shaped disk is one less than the number of driving rods. The design of the special-shaped disk enables it to push the driving rods to reciprocate when rotating. The cross-section of the inner wall of the conical pipe between the spiral grooves is in a continuous undulating shape. When the vibration motor is started, the liquid slag in the spiral grooves overflows, which can further increase its contact area with the air. A shutter is movably connected to the side wall of the sleeve corresponding to the position of the coal blowing hole. The movable connection can adopt a hinge structure. When the piston disk moves downward to extract pulverized coal and air, the shutter can cover the coal blowing hole to prevent external high-temperature substances from entering. The shutter can be made of high-temperature resistant materials such as ceramic chips. In actual implementation, heat insulation layers should be provided on the inner wall of the furnace body, the outer wall of the sleeve and the conical cover, which is a well-known technology in the technical field and will not be elaborated here.

[0029] Preferably, water inlet pipes and water outlet pipes are respectively arranged on the left and right sides of the furnace body for water supply and temperature control, and the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are located between the conical pipe and the furnace body.

[0030] By adopting the foregoing technical solutions, the beneficial effects of the present invention are as follows:

[0031] 1. For the continuous fuming furnace with a reflux type spiral slag notch, by using the cooperation of the material guiding mechanism and the coal blowing mechanism, the contact area between the liquid slag and the air can be increased, the reaction rate can be improved, the reaction time can be extended. At the same time, the coal blowing design of the coal blowing mechanism enables the pulverized coal and the air to be mixed in the furnace body, which can greatly reduce the wear of the air pipe and improve the service life of the equipment, solving the problems proposed in the background technology.

[0032] 2. For the continuous fuming furnace with a reflux type spiral slag notch, by using the design of the coal supply pipe 823, the temperature of the liquid slag can be used to preheat the pulverized coal and the air when the liquid slag is fed, which is helpful for the reduction reaction in the furnace. The overall design of this equipment is reasonable. Compared with the channel type design of the existing equipment, it has the advantages of small floor area and compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a cross-sectional view of the present invention;

[0034] Figure 2 It is the Figure 1 enlarged view at A in the present invention;

[0035] Figure 3 It is the Figure 1 enlarged view at B in the present invention;

[0036] Figure 4 It is the Figure 1 enlarged view at C in the present invention;

[0037] Figure 5 It is the Figure 1 enlarged view at D in the present invention;

[0038] Figure 6 This is a schematic diagram of the top feeding part structure in the second embodiment of the present invention.

[0039] In the figure: 1 furnace body, 2 feeding pipe, 3 gas outlet pipe, 4 slag discharge port, 5 driving motor, 6 special-shaped disk,

[0040] 7 feeding guide mechanism, 71 partition plate, 72 conical pipe, 73 annular feeding guide groove, 74 spiral groove, 75 connecting groove,

[0041] 8 coal blowing mechanism, 81 vertical rod,

[0042] 82 coal blowing assembly, 821 sleeve, 822 isolation ring, 823 coal supply pipe, 824 piston disk, 825 driving rod, 826 spherical body, 827 coal blowing hole, 828 coal supply hole, 829 filter screen, 8210 gas supply pipe, 8211 one-way valve, 8212 coal blowing pipe,

[0043] Top feeding assembly 83, 831 conical cover, 832 top feeding shell,

[0044] 833 top feeding part, 8331 top feeding hole, 8332 top feeding spring plate, 8333 top feeding plate,

[0045] 834 connecting piece,

[0046] 9 connecting rod, 10 guiding pipe, 11 mounting plate, 12 shock pad, 13 vibration motor, 14 vibration transmitting rod, 15 limiting ring, 16 compression spring, 17 shielding piece. Detailed implementation mode

[0047] For Embodiment 1, please refer to Figures 1-5 , the present invention provides a technical solution: a continuous fuming furnace with a reflux type spiral slag notch, including a furnace body 1. The top wall of the furnace body 1 is fixedly communicated with a feeding pipe 2 and a gas outlet pipe 3 respectively. The feeding pipe 2 is used for inputting liquid slag, and the gas outlet pipe 3 is used for outputting the reduced gas. A slag discharge port 4 is opened at the bottom end of the side wall of the furnace body 1. During actual implementation, a spiral conveying mechanism can be installed under the partition plate 71 for discharging waste, which belongs to the well-known technology in the technical field and will not be elaborated here. The bottom of the furnace body 1 is fixedly installed with a driving motor 5 through a bracket. The output end of the driving motor 5 is fixedly connected with a special-shaped disk 6. A feeding guide mechanism 7 is arranged inside the furnace body 1, and a coal blowing mechanism 8 is also arranged inside the furnace body 1. The coal blowing mechanism 8 is located inside the feeding guide mechanism 7;

[0048] The feeding guide mechanism 7 includes:

[0049] Partition plate 71, and the partition plate 71 is fixedly connected to the inner wall of the furnace body 1;

[0050] The conical tube 72, the thin end of the conical tube 72 is fixedly connected to the middle of the partition plate 71 and communicates with the lower side of the partition plate 71, and the thick end of the conical tube 72 is fixedly connected to the inner wall of the furnace body 1;

[0051] The annular material guiding groove 73, the upper half of the inner wall of the conical tube 72 is provided with an annular material guiding groove 73;

[0052] The spiral groove 74, the spiral groove 74 is opened in the lower half of the inner wall of the conical tube 72 for slag guiding;

[0053] The connecting groove 75, the connecting groove 75 is opened in the middle of the inner wall of the conical tube 72 for connecting the annular material guiding groove 73 and the spiral groove 74;

[0054] The coal blowing mechanism 8 includes:

[0055] The vertical rod 81, the vertical rod 81 is fixedly connected to the inner bottom wall of the furnace body 1 and is located inside the conical tube 72;

[0056] The coal blowing assembly 82, the coal blowing assembly 82 is arranged at the top of the vertical rod 81 for blowing out pulverized coal;

[0057] The top material assembly 83, the top material assembly 83 is arranged above the coal blowing assembly 82 for slag throwing.

[0058] The compact design enables the pulverized coal-air to directly blow the liquid furnace slag blown out by the coal blowing assembly 82. Cooperating with the diversion of the slag by the material guiding assembly 7, the contact area between the two is greatly increased, and the reaction rate is greatly improved.

[0059] The coal blowing assembly 82 includes a sleeve 821, a spacer ring 822, a coal supply pipe 823, a piston disc 824, a driving rod 825, a sphere 826, a coal blowing hole 827, a coal supply hole 828, a filter screen 829, a gas supply pipe 8210, a check valve 8211 and a blowing pipe 8212. The sleeve 821 is fixedly connected to the top of the vertical rod 81. A plurality of spacer rings 822 are equidistantly arranged in the sleeve 821. The coal supply pipe 823 is fixedly connected to the middle of the top of the vertical rod 81, and the outer wall of the coal supply pipe 823 is fixedly connected to the inner wall of the spacer ring 822. The top of the coal supply pipe 823 penetrates through the top material shell 832 and the top wall of the furnace body 1 to the outside. A piston disc 824 is arranged in the sleeve 821 and between adjacent spacer rings 822. A plurality of driving rods 825 are in the sleeve 821. The driving rod 825 is made of heat-resistant steel rod, and the selected model should ensure its good flexibility. The driving rod 825 is inserted into the corresponding through holes on the spacer ring 822 and is equipped with linear bearings. The bottom end of the driving rod 825 penetrates through the vertical rod 81 and the bottom wall of the furnace body 1 to the outside of the furnace body 1 and is fixedly connected to a sphere 826. The sphere 826 contacts the top surface of the special-shaped disc 6. The driving rod 825 is fixedly connected to each piston disc 824;

[0060] Blow - coal holes 827 are provided on the sleeve 821 at a position between two adjacent isolation rings 822. Coal supply holes 828 are provided on the coal supply pipe 823 corresponding to the blow - coal holes 827, and a filter screen 829 is provided. The air supply pipe 8210 is arranged inside the coal supply pipe 823. The intake end of the air supply pipe 8210 penetrates through the coal supply pipe 823 to the outside of the furnace body 1 and is provided with a one - way valve 8211. One end of a blow - air pipe 8212 is communicated with the lower side of the air supply pipe 8210 corresponding to the coal supply hole 828. The other end of the blow - air pipe 8212 penetrates through the coal supply pipe 823 and is communicated with the inside of the sleeve 821. The positions of the blow - coal holes 827 and the blow - air pipe 8212 should be designed to be higher within a certain range so that the piston disk 824 does not contact the isolation ring 822 during movement, which can prevent the blow - coal holes 827 and the blow - air pipe 8212 from being blocked by the piston disk 824. The filter screen 829 can separate pulverized coal, which helps the air and pulverized coal to be mixed under the suction of the piston disk 824. And when the piston disk 824 moves upward, the filter screen 829 can avoid being blocked by pulverized coal due to air pressure. The mesh number of the filter screen 829 should be selected to ensure that the pulverized coal can pass through smoothly. Preferably, the mesh number of the pulverized coal should be 10 - 50 times that of the filter screen 829.

[0061] The piston - type design can rhythmically draw in and discharge pulverized coal and air, supply air and pulverized coal into the furnace body 1, and at the same time realize the re - mixing when both are discharged, reducing the wear of the gas supply pipeline. Its working rate is controlled by the drive motor 5 and can be adjusted according to the actual working conditions.

[0062] The top - material assembly 83 includes a conical cover 831, a top - material shell 832, a top - material part 833 and a connecting piece 834. The bottom end of the conical cover 831 is fixedly connected to the top end of the sleeve 821. The top - material shell 832 is in a bowl shape and is fixedly connected to the top opening of the conical cover 831. A number of top - material parts 833 are arranged on the top - material shell 832. The top end of the drive rod 825 extends into the conical cover 831 and is connected to the top - material part 833 through the connecting piece 834.

[0063] Using the top - material assembly 83 in cooperation with the blow - coal assembly 82 can sprinkle the incoming liquid slag onto the conical pipe 72, increasing the surface area of the liquid slag. The structure is simple and reliable, and at the same time can pre - heat the pulverized coal and air.

[0064] The top - material part 833 includes a top - material hole 8331 and a top - material spring plate 8332. A number of top - material holes 8331 are arranged in a circular pattern on the top - material shell 832. The top - material spring plate 8332 is welded inside the top - material shell 832. The cross - section of the top - material spring plate 8332 is arc - shaped. The connecting piece 834 is located in the middle of the lower surface of the top - material spring plate 8332. The connecting piece 834 is a ball - shaft. The top - material spring plate 8332 needs to be made of high - temperature - resistant spring steel, which can use its elasticity to strongly sprinkle the liquid slag.

[0065] A guide tube 10 is fixedly connected to the position of the drive rod 825 corresponding to the inner wall of the conical cover 831 through a connecting rod 9, and the drive rod 825 is inserted into the guide tube 10.

[0066] There are four drive rods 825, and the four drive rods 825 are arranged in a ring with reference to the coal supply pipe 823.

[0067] Installation plates 11 are provided on the left and right walls of the furnace body 1. The installation plates 11 are connected to the side wall of the furnace body 1 through shock pads 12. A vibration motor 13 is fixedly installed on the installation plates 11. One end of a vibration transmission rod 14 is fixedly connected to the inner side of the installation plates 11, and the other end of the vibration transmission rod 14 penetrates through the furnace body 1 and is connected to the outer wall of the conical tube 72. With the design of the vibration motor 13, the flow rate of the liquid slag in the spiral groove 74 can be accelerated through vibration, ensuring the structural effectiveness.

[0068] A limit ring 15 is fixedly connected to the position of the drive rod 825 outside the furnace body 1, and the limit ring 15 is connected to the furnace body 1 through a compression spring 16.

[0069] The discharge end of the feeding pipe 2 points to the middle of the top material shell 832. The top surface edge of the special-shaped disk 6 is in a continuous undulating shape, and the number of protruding points of the special-shaped disk 6 is one less than the number of drive rods 825. The design of the special-shaped disk 6 enables it to push the drive rod 825 to move reciprocally when rotating. The cross-section of the inner wall of the conical tube 72 between the spiral grooves 74 is in a continuous undulating shape. When the vibration motor 14 is started, the liquid slag in the spiral groove 74 overflows, which can further increase its contact area with the air. A shutter 17 is movably connected to the side wall of the sleeve 821 corresponding to the coal blowing hole 826. The movable connection can adopt a hinge structure. When the piston disk 824 moves downward to extract pulverized coal and air, the shutter 17 can cover the coal blowing hole 827 to prevent external high-temperature substances from entering. The shutter 17 can be made of high-temperature-resistant materials such as ceramic sheets. In actual implementation, heat insulation layers should be provided on the inner wall of the furnace body 1, the outer wall of the sleeve 821, and the outer wall of the conical cover 832, which is common knowledge in the technical field and will not be elaborated here.

[0070] Water inlet pipe a and water outlet pipe b are respectively arranged on the left and right sides of the furnace body 1 for water supply and temperature control, and the water outlet end of the water inlet pipe a and the water inlet end of the water outlet pipe b are between the conical tube 72 and the furnace body 1.

[0071] Example 2, please refer to Figure 6 , the present invention provides a technical solution: The top material part 833 includes a top material hole 8331 and a top material plate 8333. A number of top material holes 8331 are arranged in a ring on the top material shell 832. The top material plate 8333 is inserted into the top material shell 832. A connecting piece 834 is located in the middle of the lower surface of the top material plate 8333. The connecting piece 834 is a steel plate. The axial direction of the top material hole 8331 is the same as the direction pointed by the top end of the drive rod 825. With this structure, it is simple in structure, low in cost, high in reliability, and has a low throwing force.

[0072] When the continuous fuming furnace with a reflux type spiral slag notch works, liquid slag is fed through the feeding pipe 2. The liquid slag enters the top material shell 832 and is rhythmically scattered by the top material part 822 and falls into the annular guide groove 73, and then flows into the spiral groove 74. At the same time, pulverized coal and air are respectively supplied through the coal supply pipe 823 and the air supply pipe 8210. The two are blown into the conical pipe 72 through the coal blowing assembly 82 to react with the liquid slag. The waste slag falls to the bottom of the furnace body 1, and the gas generated by the reduction reaction is discharged through the gas outlet pipe 3.

[0073] Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A continuous fuming furnace with a reflux spiral slag notch, comprising a furnace body (1), the top wall of the furnace body (1) is fixedly communicated with a feeding pipe (2) and an air outlet pipe (3) respectively, a slag discharge port (4) is arranged at the bottom end of the side wall of the furnace body (1), and a driving motor (5) is fixedly installed at the bottom of the furnace body (1) through a bracket, and is characterized in that: The output end of the driving motor (5) is fixedly connected with a special-shaped disc (6). A material guiding mechanism (7) is arranged inside the furnace body (1), and a coal blowing mechanism (8) is also arranged inside the furnace body (1). The coal blowing mechanism (8) is located inside the material guiding mechanism (7). The material guiding mechanism (7) includes: A partition plate (71) fixedly connected to the inner wall of the furnace body (1); A conical pipe (72), the thin port of the conical pipe (72) is fixedly connected to the middle of the partition plate (71) and communicates with the lower side of the partition plate (71), and the thick port of the conical pipe (72) is fixedly connected to the inner wall of the furnace body (1); An annular material guiding groove (73) opened in the upper half of the inner wall of the conical pipe (72); A spiral groove (74) opened in the lower half of the inner wall of the conical pipe (72) for guiding slag; A communication groove (75) opened in the middle of the inner wall of the conical pipe (72) for communicating the annular material guiding groove (73) and the spiral groove (74); The coal blowing mechanism (8) includes: A vertical rod (81) fixedly connected to the inner bottom wall of the furnace body (1) and located inside the conical pipe (72); A coal blowing assembly (82) arranged at the top of the vertical rod (81) for blowing out pulverized coal; A material pushing assembly (83) arranged above the coal blowing assembly (82) for sprinkling slag; The coal blowing assembly (82) includes a sleeve (821), a spacer ring (822), a coal supply pipe (823), a piston disc (824), a driving rod (825), a sphere (826), a coal blowing hole (827), a coal supply hole (828), a filter screen (829), a gas supply pipe (8210), a check valve (8211) and a blowing pipe (8212). The sleeve (821) is fixedly connected to the top of the vertical rod (81). A plurality of spacer rings (822) are equidistantly arranged inside the sleeve (821). The coal supply pipe (823) is fixedly connected to the middle of the top of the vertical rod (81), and the outer wall of the coal supply pipe (823) is fixedly connected to the inner wall of the spacer ring (822). The top of the coal supply pipe (823) penetrates through the top wall of the furnace body (1) to the outside. A piston disc (824) is arranged inside the sleeve (821) and between adjacent spacer rings (822). A plurality of driving rods (825) are inside the sleeve (821), and the driving rods (825) are inserted into corresponding through holes on the spacer rings (822) and are equipped with linear bearings. The bottom end of the driving rod (825) penetrates through the vertical rod (81) and the bottom wall of the furnace body (1) to the outside of the furnace body (1) and is fixedly connected to a sphere (826). The sphere (826) contacts the top surface of the special-shaped disc (6). The driving rod (825) is fixedly connected to each piston disc (824); There is a coal blowing hole (827) on the sleeve (821) and at a position between two adjacent isolation rings (822). A coal supply hole (828) is provided at a position corresponding to the coal blowing hole (827) on the coal supply pipe (823), and a filter screen (829) is provided. The air supply pipe (8210) is arranged inside the coal supply pipe (823). The air inlet end of the air supply pipe (8210) penetrates through the coal supply pipe (823) to the outside of the furnace body (1) and is provided with a one-way valve (8211). One end of a blowing pipe (8212) is communicated with the lower side of the air supply pipe (8210) at a position corresponding to the coal supply hole (828). The other end of the blowing pipe (8212) penetrates through the coal supply pipe (823) and is communicated with the inside of the sleeve (821).

2. The continuous fuming furnace with a reflux type spiral slag notch according to claim 1, characterized in that: The blanking component (83) includes a conical cover (831), a blanking shell (832), a blanking part (833) and a connecting piece (834). The bottom end of the conical cover (831) is fixedly connected to the top end of the sleeve (821). The blanking shell (832) is bowl-shaped and is fixedly connected to the top opening of the conical cover (831). A plurality of blanking parts (833) are arranged on the blanking shell (832). The top end of the driving rod (825) extends into the conical cover (831) and is connected to the blanking part (833) through the connecting piece (834).

3. The continuous fuming furnace with a reflux type spiral slag notch according to claim 2, characterized in that: The blanking part (833) includes a blanking hole (8331) and a blanking spring plate (8332). A plurality of blanking holes (8331) are arranged in a circular pattern on the blanking shell (832). The blanking spring plate (8332) is welded inside the blanking shell (832). The cross section of the blanking spring plate (8332) is arc-shaped. The connecting piece (834) is located in the middle of the lower surface of the blanking spring plate (8332), and the connecting piece (834) is a ball shaft.

4. The continuous fuming furnace with a reflux spiral slag notch according to claim 2, characterized in that: The blanking part (833) includes a blanking hole (8331) and a blanking plate (8333). A plurality of blanking holes (8331) are arranged in a circular pattern on the blanking shell (832). The blanking plate (8333) is inserted into the blanking shell (832). The connecting piece (834) is located in the middle of the lower surface of the blanking plate (8333). The connecting piece (834) is a steel plate, and the axial direction of the blanking hole (8331) is the same as the direction pointed by the top end of the driving rod (825).

5. The continuous fuming furnace with a reflux spiral slag notch according to claim 2, characterized in that: A guide pipe (10) is fixedly connected to the position of the driving rod (825) corresponding to the inner wall of the conical cover (831) through a connecting rod (9), and the driving rod (825) is inserted into the guide pipe (10).

6. The continuous fuming furnace with a reflux spiral slag notch according to claim 5, characterized in that: The number of the driving rods (825) is four, and the four driving rods (825) are arranged in a circular pattern with reference to the coal supply pipe (823).

7. The continuous fuming furnace with a reflux type spiral slag notch according to claim 6, characterized in that: Installation plates (11) are arranged on the left and right walls of the furnace body (1). The installation plates (11) are connected to the side wall of the furnace body (1) through shock pads (12). A vibration motor (13) is fixedly installed on the installation plates (11). One end of a vibration transmission rod (14) is fixedly connected to the inner side of the installation plates (11), and the other end of the vibration transmission rod (14) penetrates through the furnace body (1) and is connected to the outer wall of the conical pipe (72).

8. The continuous fuming furnace with a reflux type spiral slag notch according to claim 7, characterized in that: The driving rod (825) is fixedly connected with a limit ring (15) at a position outside the furnace body (1), and the limit ring (15) is connected with the furnace body (1) through a compression spring (16).

9. The continuous fuming furnace with a reflux type spiral slag notch according to claim 1, characterized in that: The discharging end of the feeding pipe (2) points to the middle of the top material shell (832). The top surface edge of the special-shaped disc (6) is continuously undulating, and the number of protruding points of the special-shaped disc (6) is one less than the number of driving rods (825). The cross-section of the inner wall of the conical pipe (72) between the spiral grooves (74) is continuously undulating. A shielding piece (17) is movably connected to the side wall of the sleeve (821) corresponding to the position of the coal blowing hole (826).

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