A slag drying device for cyanide slag disposal

Abstract

The invention relates to the technical field of slag treatment, and discloses a slag drying device for cyanide slag treatment, comprising: a drying cylinder and an electric hot air blower, wherein a hot air spraying mechanism is arranged in the drying cylinder for spraying hot air into the drying cylinder; the hot air spraying mechanism comprises a plurality of hot air nozzles, a mesh drawing member and an explosive mechanism, each hot air nozzle is equipped with an explosive mechanism, and the explosive mechanism comprises a compressed air chamber; the outer wall of the hot air nozzle is provided with a plurality of rows of air jet holes along its length direction, and corresponding to the inner wall position of each row of air jet holes, the inner wall of the hot air nozzle is provided with a slag blocking net, and the slag blocking net is designed with an inner ring net, and the inner ring net extends along the inner ring wall of the air jet hole; the slag blocking net of the invention is first recessed inwardly and then quickly reset under the drive of the mesh drawing member, which not only effectively utilizes the power generated by the rotation of the mesh drawing member, but also realizes automatic cleaning of the air jet hole through the recessing and resetting action of the slag blocking net, and the recessing action of the slag blocking net can remove these attachments in time.

Description

Technical Field

[0001] The invention relates to the field of slag treatment, and more particularly to a slag drying device for cyanide slag treatment. Background Art

[0002] Cyanide is a highly toxic substance that is extremely harmful to the human body and the environment. When slag contains a large amount of cyanide, direct discharge will not only pollute the water body, but also pose a serious threat to the ecosystem and human health. With the increasingly stringent national environmental protection requirements, it has become inevitable to carry out harmless treatment of cyanide-containing slag.

[0003] The slag after harmless treatment is spherical in shape. These spherical slags still contain a certain amount of moisture and need to be dried to further reduce their moisture content for subsequent storage, transportation and utilization. At this time, the slag drying device for cyanide slag disposal is particularly important. The device uses structures such as hot air nozzles to evenly spray hot air into the slag to achieve rapid and effective drying.

[0004] Slag contains a lot of fine particles and sticky components. Under the action of hot air, these particles are easy to fly and adhere to the fumaroles. The water vapor generated during the drying process will cause the slag to condense at the fumaroles, increasing the risk of blockage. To this end, we propose a slag drying device for cyanide slag disposal. Summary of the invention

[0005] The invention provides a slag drying device for cyanide slag disposal, which solves the technical problem in the related art that particles are easily blown up and attached around the air jet holes under the action of hot air, thereby increasing the risk of blockage.

[0006] The present invention provides a slag drying device for cyanide slag disposal, comprising: a drying cylinder and an electric hot air blower, wherein a hot air spraying mechanism is arranged in the drying cylinder to spray hot air into the drying cylinder;

[0007] The hot air spraying mechanism includes a plurality of hot air spraying pipes, a mesh drawing member and an explosion mechanism, each hot air spraying pipe is equipped with an explosion mechanism, and the explosion mechanism includes a compressed air chamber;

[0008] The outer wall of the hot air nozzle is provided with a plurality of rows of jet holes along its length direction, and corresponding to the inner wall position of each row of jet holes, the inner wall of the hot air nozzle is provided with a slag blocking net, and the slag blocking net is designed with an inner ring net, and the inner ring net extends along the inner ring wall of the jet hole;

[0009] The hot air generated by the electric hot air blower is introduced into the hot air nozzle, driving the mesh pulling piece to rotate. The airflow driven by the rotation of the mesh pulling piece enters the compressed air chamber. With each complete rotation of the mesh pulling piece, the slag blocking net at the corresponding air jet hole is pulled inward first, and then quickly reset and popped out, so as to remove the slag attached to the air jet hole. At the same time, the air pressure in the compressed air chamber gradually accumulates and is suddenly released at a fixed time when it reaches the preset value, generating an explosion shock, and the impact force acts on the hot air nozzle.

[0010] Furthermore, a cyanide slag addition port is provided at one end of the drying cylinder's feed port for adding slag after harmless treatment of cyanide-containing waste slag, and a discharge port is provided below the end of the drying cylinder away from the cyanide slag addition port. A transmission gear is fixedly provided on the outer wall of the drying cylinder, and an active driving member meshing with the transmission gear is provided on one side of the transmission gear for driving the drying cylinder to rotate.

[0011] Furthermore, the hot air spraying mechanism also includes a hot air duct that crosses the drying cylinder, the hot air duct is rotatably connected to the drying cylinder, the air inlet end of the hot air duct is connected to an electric hot air blower, the end of the drying cylinder away from the electric hot air blower is connected to a waste gas recovery component, the hot air nozzle and the hot air duct are fixedly connected and interconnected, and the hot air generated by the electric hot air blower is introduced into the hot air nozzle through the hot air duct, and then sprayed into the slag through the air jet hole.

[0012] Furthermore, the mesh pulling member includes an inner tube located at the center of the hot air nozzle, which is fixedly connected to the hot air nozzle and does not affect the flow of hot air in the space between the hot air nozzle and the inner tube. A turbofan member is fixedly arranged at one end of the inner tube near the air inlet of the hot air nozzle, and an inverted L-shaped follower column is fixedly arranged on the central rotating shaft of the blades of the turbofan member, and the follower column rotates with the central rotating shaft of the blades of the turbofan member.

[0013] Furthermore, a limit frame is arranged above the turbofan component, and the limit frame is fixedly connected to the inner wall of the inner through pipe without affecting the hot air passing through the limit frame. A wire winding column is passed through the center position of the limit frame, and the wire winding column is rotatably connected to the limit frame. A passive column in the shape of a straight line is rotatably arranged at one end of the wire winding column close to the turbofan component, and the height of the rotating column exceeds that of the passive column.

[0014] Furthermore, a torsion spring is provided on the side of the limit frame away from the turbofan component, and the torsion spring is sleeved on the outside of the winding column. The two ends of the torsion spring are respectively inserted into the winding column and the limit frame. A magnetic block is fixedly provided on the side of the limit frame close to the passive column, and the passive column and the magnetic block attract each other.

[0015] Furthermore, a plurality of inner drum wires are fixedly arranged on the outer wall of the wire winding column above the limiting frame, and the end of the inner drum wire away from the wire winding column passes through the inner through pipe and is fixedly connected to the inner wall of the slag blocking net, and each inner drum wire corresponds to an air injection hole.

[0016] Furthermore, a mesh pressing ring is fixedly provided on the inner wall of the hot air nozzle, and the mesh pressing ring is respectively pressed on the two sides of the slag-blocking mesh, and the upper and lower sides of the slag-blocking mesh are fixedly provided with shrinkage wires, and the shrinkage wires are fixedly connected to the mesh pressing ring, and a slag-blocking pressure ring is fixedly provided on the end of the inner ring mesh away from the slag-blocking mesh, and the slag-blocking pressure ring is fixed on the periphery of each jet hole.

[0017] Furthermore, the compressed air chamber is interconnected with the inner pipe, and an air baffle is rotatably provided at the air inlet of the compressed air chamber. The diameter of the air baffle is larger than the diameter of the air inlet of the compressed air chamber. An expansion rubber is fixedly provided on the upper wall of the compressed air chamber, and a slag-proof net fixedly connected to the top wall of the hot air nozzle is provided on the outer side of the expansion rubber.

[0018] Furthermore, a burst cylinder is fixedly arranged at the center position of the expansion film, an internal resistance block is fixedly arranged on the inner wall of the burst cylinder, an elastic closing plate is arranged below the internal resistance block, the closing plate is rotatably connected to the burst cylinder, and a plurality of inclined shoveling plates are fixedly arranged inside the drying cylinder, a strong magnetic sheet is embedded on the shoveling plate, and the closing plate is attracted by the strong magnetic sheet.

[0019] The beneficial effects of the present invention are:

[0020] The slag-blocking net of the present invention first sinks inwards and then quickly resets under the drive of the net-drawing member, which not only effectively utilizes the power generated by the rotation of the net-drawing member, but also realizes automatic cleaning of the air jet hole through the sinking and resetting action of the slag-blocking net. During the continuous operation of the hot air nozzle, the sinking action of the slag-blocking net can timely remove these attachments, ensuring that the hot air can smoothly pass through the air jet hole and be evenly sprayed into the drying cylinder, thereby improving the drying efficiency. In addition, this design of the slag-blocking net also reduces the frequency of manual cleaning, reduces maintenance costs, and provides a strong guarantee for stable operation.

[0021] The explosive mechanism can produce an impact effect similar to an explosion. When the air pressure in the compressed air chamber accumulates to a preset value, it will suddenly release a strong impact force to act on the hot air nozzle. This impact force can not only further enhance the cleaning effect of the air jet hole and its surrounding area, but also promote the uniform distribution of hot air in the drying cylinder and improve the utilization rate of hot air. In addition, the impact effect similar to an explosion can also loosen the slag to a certain extent, which is helpful for the drying and crushing of the slag, thereby improving the efficiency and quality of the entire drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the drying cylinder of the present invention;

[0024] Figure 3It is a schematic diagram of the hot air nozzle structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the left side structure of the cross section of the drying cylinder of the present invention;

[0026] Figure 5 It is a schematic diagram of the internal structure of the hot air nozzle of the present invention;

[0027] Figure 6 The present invention Figure 5 The enlarged schematic diagram at A in the middle;

[0028] Figure 7 It is a schematic diagram of the local structure of the hot air nozzle of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the storm vent tube of the present invention;

[0030] Fig. 9 It is a schematic diagram of the slag blocking net structure of the present invention;

[0031] Fig.10 It is a schematic diagram of the top view structure of the slag blocking net of the present invention.

[0032] In the figure: 11, drying cylinder; 12, cyanide slag feeding port; 13, electric hot air blower; 14, waste gas recovery part; 15, transmission gear; 16, active drive part; 17, discharge port; 2, hot air spraying mechanism; 21, hot air duct; 22, hot air spray pipe; 23, air jet hole; 24, slag blocking ring; 25, slag blocking net; 26, net pressing ring; 27, inner drum drawing; 28, shrinkage drawing; 29. Inner ring network; 31. Inner through pipe; 32. Turbofan component; 33. Wire winding column; 34. Rotating column; 35. Passive column; 36. Limiting frame; 37. Magnetic block; 38. Torsion spring; 4. Explosive mechanism; 41. Compression air chamber; 42. Expansion film; 43. Anti-slag net; 44. Explosive discharge tube; 45. Inner resistance block; 46. Closing plate; 47. Air blocking plate; 51. Shovel plate; 52. Strong magnetic sheet. DETAILED DESCRIPTION

[0033] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0034] like Figure 1 and Figure 2As shown, a slag drying device for cyanide slag treatment comprises: a drying cylinder 11 and an electric hot air blower 13, wherein a hot air spraying mechanism 2 is arranged inside the drying cylinder 11 to spray hot air into the drying cylinder 11;

[0035] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the hot air spraying mechanism 2 includes a plurality of hot air spray pipes 22, a mesh pulling member and an explosion mechanism 4, each hot air spray pipe 22 is equipped with an explosion mechanism 4, and the explosion mechanism 4 includes a compressed air chamber 41;

[0036] The outer wall of the hot air nozzle 22 is provided with a plurality of rows of jet holes 23 along its length direction, and corresponding to the inner wall position of each row of jet holes 23, the inner wall of the hot air nozzle 22 is provided with a slag blocking net 25, and the slag blocking net 25 is designed with an inner ring net 29, and the inner ring net 29 extends along the inner ring wall of the jet hole 23;

[0037] The hot air generated by the electric hot air blower 13 is introduced into the hot air nozzle 22, while driving the mesh pulling member to rotate. The airflow driven by the rotation of the mesh pulling member enters the compressed air chamber 41. With each complete rotation of the mesh pulling member, the slag blocking net 25 at the corresponding jet hole 23 is pulled inward first, and then quickly reset and popped out, so as to remove the slag attached to the jet hole 23. At the same time, the air pressure in the compressed air chamber 41 gradually accumulates and is suddenly released when it reaches a preset value, generating an explosion shock, and the impact force acts on the hot air nozzle 22.

[0038] A cyanide slag addition port 12 is provided at one end of the feed inlet of the drying cylinder 11 for adding slag after harmless treatment of cyanide-containing waste slag. A discharge port 17 is provided below the end of the drying cylinder 11 away from the cyanide slag addition port 12. A transmission gear 15 is fixedly provided on the outer wall of the drying cylinder 11. An active driving member 16 meshing with the transmission gear 15 is provided on one side of the transmission gear 15 for driving the drying cylinder 11 to rotate.

[0039] The slag of cyanide-containing waste slag after harmless treatment is quantitatively added into the drying cylinder 11 through the cyanide slag adding port 12, and the cyanide slag adding port 12 is closed. Then, the active driving member 16 drives the transmission gear 15 to rotate, thereby driving the drying cylinder 11 to rotate. The slag in the drying cylinder 11 rolls in the drying cylinder 11, and is finally discharged through the discharging port 17 after drying is completed.

[0040] The hot air spraying mechanism 2 also includes a hot air duct 21 that crosses the drying cylinder 11. The hot air duct 21 is rotatably connected to the drying cylinder 11. The air inlet end of the hot air duct 21 is connected to the electric hot air blower 13. The end of the drying cylinder 11 away from the electric hot air blower 13 is connected to the exhaust gas recovery component 14. The hot air nozzle 22 is fixedly connected to the hot air duct 21 and is interconnected. The hot air generated by the electric hot air blower 13 is introduced into the hot air nozzle 22 through the hot air duct 21, and then sprayed into the slag through the jet hole 23.

[0041] While the drying cylinder 11 rotates, the electric hot air blower 13 blows high-temperature air into the hot air duct 21. The hot air passes through the hot air duct 21 and then enters a plurality of hot air nozzles 22, and is finally ejected from a plurality of air jet holes 23, so that the high-temperature air flows in the drying cylinder 11, thereby drying the slag in the drying cylinder 11. Finally, the hot air in the drying cylinder 11 flows into the waste gas recovery component 14 for subsequent treatment.

[0042] like Figure 5 , Figure 6 and Figure 7 As shown, the mesh pulling member includes an inner tube 31 located at the center of the hot air nozzle 22. The inner tube 31 is fixedly connected to the hot air nozzle 22 and does not affect the flow of hot air in the space between the hot air nozzle 22 and the inner tube 31. A turbofan member 32 is fixedly arranged at one end of the inner tube 31 near the air inlet of the hot air nozzle 22. An inverted L-shaped follower column 34 is fixedly arranged on the central axis of the blades of the turbofan member 32, and the follower column 34 rotates with the central axis of the blades of the turbofan member 32.

[0043] A limiting frame 36 is arranged above the turbofan component 32, and the limiting frame 36 is fixedly connected to the inner wall of the inner through pipe 31 without affecting the hot air passing through the limiting frame 36. A winding column 33 is passed through the center position of the limiting frame 36, and the winding column 33 is rotatably connected to the limiting frame 36. A passive column 35 in the shape of a straight line is rotatably arranged at one end of the winding column 33 close to the turbofan component 32, and the height of the rotating column 34 exceeds the passive column 35.

[0044] A torsion spring 38 is provided on the side of the limit frame 36 away from the turbofan component 32, and the torsion spring 38 is sleeved on the outside of the winding column 33. The two ends of the torsion spring 38 are respectively inserted into the winding column 33 and the limit frame 36. A magnetic block 37 is fixedly provided on the side of the limit frame 36 close to the passive column 35, and the passive column 35 and the magnetic block 37 attract each other.

[0045] A plurality of inner drum wires 27 are fixedly arranged on the outer wall of the wire winding column 33 above the limiting frame 36 , and one end of the inner drum wire 27 away from the wire winding column 33 passes through the inner through pipe 31 and is fixedly connected to the inner wall of the slag blocking net 25 , and each inner drum wire 27 corresponds to an air injection hole 23 .

[0046] like Fig. 9 and Fig.10As shown, the inner wall of the hot air nozzle 22 is also fixedly provided with a mesh pressing ring 26, and the mesh pressing ring 26 is respectively pressed on the two sides of the slag-blocking mesh 25, the upper and lower sides of the slag-blocking mesh 25 are fixedly provided with shrinkage wires 28, and the shrinkage wires 28 are fixedly connected to the mesh pressing ring 26, and a slag-blocking pressure ring 24 is fixedly provided at one end of the inner ring mesh 29 away from the slag-blocking mesh 25, and the slag-blocking pressure ring 24 is fixed on the periphery of each jet hole 23.

[0047] like Figure 8 As shown, the compressed air chamber 41 is interconnected with the inner through pipe 31, and an air baffle plate 47 is rotatably provided at the air inlet of the compressed air chamber 41. The diameter of the air baffle plate 47 is larger than the diameter of the air inlet of the compressed air chamber 41, and an expansion rubber sheet 42 is fixedly provided on the upper wall of the compressed air chamber 41. The outer side of the expansion rubber sheet 42 is provided with an anti-slag net 43 fixedly connected to the top wall of the hot air nozzle 22.

[0048] A burst cylinder 44 is fixedly provided at the center position of the expansion film 42, an inner resistance block 45 is fixedly provided on the inner wall of the burst cylinder 44, an elastic closing plate 46 is provided below the inner resistance block 45, and the closing plate 46 is rotatably connected to the burst cylinder 44. A plurality of inclined shoveling plates 51 are fixedly provided inside the drying cylinder 11, a strong magnetic sheet 52 is inlaid on the shoveling plate 51, and the closing plate 46 is attracted by the strong magnetic sheet 52.

[0049] The hot air entering the hot air passage 21 partially enters the hot air nozzle 22, and partially enters the inner passage 31. The hot air will drive the blades of the turbofan 32 to rotate while flowing in the inner passage 31. The rotation of the central axis of the blades of the turbofan 32 drives the follower column 34 to rotate. When the follower column 34 rotates to the position of the passive column 35, it will be blocked by the passive column 35, and then the passive column 35 will be pushed to rotate by the follower column 34.

[0050] As the rotating column 34 rotates, all the inner drum wires 27 will be wound up at the same time, and the inner drum wires 27 will be pulled, and the inner drum wires 27 will pull the slag blocking net 25 at the position of the corresponding gas jet hole 23 inward, so that the shrinkage wires 28 are stretched, and the inner ring net 29 is stretched against the slag blocking pressure ring 24 and the gas jet hole 23 to prevent the slag from falling into the concave gap between the slag blocking net 25 and the inner wall of the hot air nozzle 22 when the slag blocking net 25 is sunken, and the slag squeezed into the gas jet hole 23 will be completely blocked by the inner ring net 29;

[0051] Then, when the passive column 35 rotates to a position close to the magnetic block 37, the passive column 35 is attracted by the magnetic block 37, so that the passive column 35 rotates counterclockwise to separate from the following column 34. At this time, the following column 34 will go over the passive column 35 and continue to rotate, and the wire winding column 33 drives the wire winding column 33 to flip and reset through the return elasticity of the torsion spring 38. When the wire winding column 33 reverses, all the wound inner drum wires 27 are released, and at the same time, the rebound tension of the shrinking wire 28 causes the concave slag blocking net 25 to quickly reset and pop out, thereby removing the slag attached to the gas jet hole 23 and ejecting the slag firmly accumulated in the gas jet hole 23;

[0052] The hot air passing through the turbofan part 32 will flow upward, and as the air pressure increases, the two air blocking plates 47 will be pushed up, gradually allowing air to enter the compressed air chamber 41. A pull rope is provided under the two air blocking plates 47, and the two air blocking plates 47 can be closed at any time, so that only air can enter but not exit. The closing plate 46 is blocked by the inner resistance block 45, and a pull rope is also provided under the inner resistance block 45. A metal block is also provided in the inner resistance block 45. As the air pressure in the compressed air chamber 41 increases, the expansion film 42 gradually swells and causes the anti-slag net 43 to swell, so that the anti-slag net 43 can pass through the air. When the shovel plate 51 rotates with the drying cylinder 11 to the position of this group of hot air nozzles 22, the strong magnetic sheet 52 attracts the closing plate 46, and the pressure of the air pressure exceeds the bearing capacity of the closing plate 46. The closing plate 46 with elastic edges will instantly pass over the internal resistance block 45, achieving instant deflation and sudden release, producing an impact effect similar to an explosion. The impact force acts on the hot air nozzle 22, further enhancing the cleaning effect, and the impact force of the explosion can also disperse the slag near the hot air nozzle 22, which is beneficial to the circulation of hot air.

[0053] The shovel plate 51 is designed to have a certain inclination angle, so that the slag can move along the inclination direction of the shovel plate 51 when it is turned over by the shovel plate 51. The layout of the shovel plate 51 on the inner wall of the drying cylinder 11 is usually uniform and continuous to ensure that the slag can be evenly turned and pushed in the drying cylinder 11. When the drying cylinder 11 rotates, the shovel plate 51 also rotates accordingly. The edge of the shovel plate 51 will contact the slag and turn it over. Since the shovel plate 51 has an inclination angle, the turned slag will be affected by the combined action of gravity and the inclined surface of the shovel plate 51, and move along the inclination direction of the shovel plate 51. Due to the inclination angle and layout design of the shovel plate 51, the slag will be transferred in the same direction when it is turned over, thereby realizing the orderly flow of the slag in the drying cylinder 11.

[0054] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are protected by the present embodiment.

Claims

1. A slag drying device for cyanide slag disposal, characterized in that: include: A drying cylinder (11) and an electric hot air blower (13), wherein a hot air spraying mechanism (2) is provided inside the drying cylinder (11) for spraying hot air into the interior of the drying cylinder (11); The hot air spraying mechanism (2) comprises a plurality of hot air spray pipes (22), a mesh pulling member and an explosion mechanism (4), each hot air spray pipe (22) is equipped with an explosion mechanism (4), and the explosion mechanism (4) comprises a compressed air chamber (41); The outer wall of the hot air nozzle (22) is provided with a plurality of rows of air jet holes (23) along its length direction, and a slag blocking net (25) is installed on the inner wall of the hot air nozzle (22) corresponding to the inner wall position of each row of air jet holes (23), and the slag blocking net (25) is designed with an inner ring net (29), and the inner ring net (29) extends along the inner ring wall of the air jet holes (23); The hot air generated by the electric hot air blower (13) is introduced into the hot air nozzle (22), while driving the mesh pulling member to rotate. The airflow driven by the mesh pulling member during rotation enters the compressed air chamber (41). With each complete rotation of the mesh pulling member, the slag blocking net (25) at the corresponding air jet hole (23) is pulled inward first, and then quickly reset and popped out, thereby removing the slag attached to the air jet hole (23). At the same time, the air pressure in the compressed air chamber (41) gradually accumulates and is suddenly released at a fixed time when a preset value is reached, generating an explosion shock, and the impact force acts on the hot air nozzle (22); The mesh-pulling member comprises an inner tube (31) located at the center of the hot air nozzle (22), the inner tube (31) being fixedly connected to the hot air nozzle (22) and not affecting the flow of hot air in the space between the hot air nozzle (22) and the inner tube (31), a turbofan member (32) being fixedly arranged at one end of the inner tube (31) near the air inlet of the hot air nozzle (22), an inverted L-shaped follower column (34) being fixedly arranged on the central rotating shaft of the blades of the turbofan member (32), and the follower column (34) rotating along with the central rotating shaft of the blades of the turbofan member (32); A limit frame (36) is arranged above the turbofan component (32), and the limit frame (36) is fixedly connected to the inner wall of the inner through pipe (31) without affecting the hot air passing through the limit frame (36); a winding column (33) is passed through the center of the limit frame (36), and the winding column (33) is rotatably connected to the limit frame (36); a passive column (35) in the shape of a straight line is rotatably arranged at one end of the winding column (33) close to the turbofan component (32), and the height of the following rotating column (34) exceeds that of the passive column (35); A torsion spring (38) is provided on a side of the limit frame (36) away from the turbofan component (32), and the torsion spring (38) is sleeved on the outside of the winding column (33), and two ends of the torsion spring (38) are respectively inserted into the winding column (33) and the limit frame (36), and a magnetic block (37) is fixedly provided on a side of the limit frame (36) close to the passive column (35), and the passive column (35) and the magnetic block (37) attract each other; A plurality of inner drum wires (27) are fixedly arranged on the outer wall of the wire winding column (33) above the limiting frame (36), and one end of the inner drum wire (27) away from the wire winding column (33) passes through the inner through pipe (31) and is fixedly connected to the inner wall of the slag blocking net (25), and each inner drum wire (27) corresponds to an air injection hole (23).

2. A slag drying device for cyanide slag disposal according to claim 1, characterized in that: A cyanide slag inlet (12) is provided at one end of the feed inlet of the drying cylinder (11) for adding slag after harmless treatment of cyanide-containing waste slag. A discharge port (17) is provided below one end of the drying cylinder (11) away from the cyanide slag inlet (12). A transmission gear (15) is fixedly provided on the outer wall of the drying cylinder (11). An active driving member (16) meshing with the transmission gear (15) is provided on one side of the transmission gear (15) for driving the drying cylinder (11) to rotate.

3. A slag drying device for cyanide slag disposal according to claim 1, characterized in that: The hot air spraying mechanism (2) further comprises a hot air duct (21) which crosses the drying cylinder (11); the hot air duct (21) is rotatably connected to the drying cylinder (11); an air inlet end of the hot air duct (21) is connected to an electric hot air blower (13); an end of the drying cylinder (11) away from the electric hot air blower (13) is connected to an exhaust gas recovery component (14); the hot air spraying pipe (22) is fixedly connected to the hot air duct (21) and is in communication with each other; the hot air generated by the electric hot air blower (13) is introduced into the hot air spraying pipe (22) through the hot air duct (21) and then sprayed into the slag through the spray hole (23).

4. A slag drying device for cyanide slag disposal according to claim 1, characterized in that: The inner wall of the hot air nozzle (22) is also fixedly provided with a mesh pressing ring (26), and the mesh pressing ring (26) is pressed on two sides of the slag blocking net (25) respectively, and the upper and lower sides of the slag blocking net (25) are fixedly provided with shrinkage wires (28), and the shrinkage wires (28) are fixedly connected to the mesh pressing ring (26), and a slag blocking pressure ring (24) is fixedly provided at one end of the inner ring net (29) away from the slag blocking net (25), and the slag blocking pressure ring (24) is fixed on the periphery of each jet hole (23).

5. The slag drying device for cyanide slag disposal according to claim 1, characterized in that: The compressed air chamber (41) is in communication with the inner tube (31); an air inlet of the compressed air chamber (41) is rotatably provided with an air blocking plate (47); a diameter of the air blocking plate (47) is larger than a diameter of the air inlet of the compressed air chamber (41); an expansion rubber sheet (42) is fixedly provided on the upper wall of the compressed air chamber (41); and an anti-slag net (43) fixedly connected to the top wall of the hot air nozzle (22) is provided on the outer side of the expansion rubber sheet (42).

6. A slag drying device for cyanide slag disposal according to claim 5, characterized in that: A burst cylinder (44) is fixedly arranged at the center of the expansion film (42); an internal resistance block (45) is fixedly arranged on the inner wall of the burst cylinder (44); an elastic closing plate (46) is arranged below the internal resistance block (45); the closing plate (46) is rotatably connected to the burst cylinder (44); a plurality of inclined shoveling plates (51) are fixedly arranged inside the drying cylinder (11); a strong magnetic sheet (52) is inlaid on the shoveling plate (51), and the closing plate (46) is attracted by the strong magnetic sheet (52).

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