A rotary kiln waste heat recovery device for molybdenum iron smelting and a use method thereof

Abstract

The present application relates to the field of rotary kiln, and discloses a rotary kiln waste heat recovery device for molybdenum iron smelting and a use method thereof. The present application aims to solve the problem that the rotary kiln usually recovers waste heat through a heat exchanger during operation, but the temperature of the outer wall of the rotary kiln cylinder can also reach a high temperature. The existing equipment recovers waste heat from the outer wall of the cylinder, and the heat absorbed is consumed in the transfer process, which fails to effectively convert heat, thereby wasting the heat generated by the rotary kiln. After the rotary kiln smelts molybdenum iron, the subsequent vibrating screen processing equipment is subjected to a large weight and is abraded, which affects the service life of the subsequent equipment. The waste heat recovery device can recover the waste heat from the outer wall of the cylinder, and the recovered heat energy can be quickly utilized, and the dust and impurities generated by the rotary kiln can be reduced.

Description

Technical Field

[0001] This invention relates to the field of rotary kilns, specifically to a waste heat recovery device for rotary kilns used in ferromolybdenum smelting and its usage method. Background Technology

[0002] A rotary kiln (also known as a rotary calcining kiln) is a type of building materials equipment. Rotary kilns can be categorized into cement kilns, metallurgical and chemical kilns, and lime kilns based on the materials they process. Cement kilns are primarily used for calcining cement clinker and are divided into two main categories: dry-process cement kilns and wet-process cement kilns. Metallurgical and chemical kilns are mainly used in the metallurgical industry for magnetizing and roasting lean iron ore in steel plants; oxidizing and roasting chromium and nickel iron ore; roasting high-alumina vanadium ore in refractory material plants; roasting clinker and aluminum hydroxide in aluminum plants; and roasting chromite sand and chromite powder in chemical plants. Lime kilns (i.e., active lime kilns) are used for roasting active lime and lightly calcined dolomite for steel plants and ferroalloy plants.

[0003] In the existing rotary kiln smelting process of ferromolybdenum, waste heat is usually recovered through heat exchangers. However, the temperature of the outer wall of the rotary kiln cylinder can also reach a high temperature. Existing equipment recovers waste heat from the outer wall of the cylinder, but a large amount of the absorbed heat is consumed during the transfer process, resulting in ineffective heat conversion and wasting the heat generated by the rotary kiln. Furthermore, after smelting ferromolybdenum, the ferromolybdenum is piled up during feeding, which puts a lot of weight on the subsequent vibrating screen processing equipment, causing wear and affecting the service life of the subsequent equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a waste heat recovery device for rotary kilns used in ferromolybdenum smelting and its usage method, so as to solve the problems mentioned in the background art. To achieve the above objectives, the present invention provides the following technical solution: a waste heat recovery device for a rotary kiln in ferromolybdenum smelting, comprising a rotary kiln body, the rotary kiln body including a cylinder, support rollers, a transmission device, and two large gear rings, the support rollers and the transmission device being placed on the ground, the cylinder being mounted on the support rollers, and a tire being provided at the position where the cylinder is placed on the support rollers, the two large gear rings being mounted on the outer wall of the cylinder, and the large gear rings being driven in conjunction with the transmission device, the transmission device including a support frame, a transmission motor, a transmission rod, and two small gears, the support frame being placed horizontally on the ground, the transmission motor being fixedly mounted on the support frame, the transmission rod being mounted on the main shaft of the transmission motor, and the transmission rod being rotatably engaged with the support frame, the two small gears being mounted on the transmission rod, and the two small gears respectively meshing with the two large gear rings, a waste heat recovery device being provided on the outer wall of the cylinder, a kiln opening and a kiln tail being provided at both ends of the cylinder, a kiln hood being provided on both the kiln opening and the kiln tail, the bottom of the waste heat recovery device being placed on the ground, and the inner wall of the waste heat recovery device being in contact with the outer wall of the cylinder.

[0005] Preferably, the waste heat recovery equipment includes a waste heat recovery box, the bottom of which is placed on the ground. The outer wall of the waste heat recovery box is in contact with the outer wall of the cylinder. The waste heat recovery box is filled with water. An arc-shaped slide is provided on the outer wall of the cylinder that is in contact with the waste heat recovery box. A rotating component is provided inside the waste heat recovery box. The rotating component is located at the inner bottom of the waste heat recovery box and slides in cooperation with the arc-shaped slide.

[0006] Preferably, the rotating component includes a universal ball, a heat-conducting rod, and a swinging paddle. The universal ball is disposed at the inner bottom of the waste heat recovery box and rotates in conjunction with the inner bottom of the waste heat recovery box. The heat-conducting rod is fixedly disposed on the universal ball, located in the lower half of the universal ball and outside the waste heat recovery box. The bottom of the heat-conducting rod is also provided with a friction head, which slides in conjunction with an arc-shaped slide rail. The heat-conducting rod is located in the upper half of the universal ball and inside the waste heat recovery box. The swinging paddle is fixedly disposed at the top of the heat-conducting rod and is arc-shaped.

[0007] Preferably, a pressure limiting valve is also provided on the outer wall of the waste heat recovery box, and the pressure limiting valve is located inside the kiln hood at the kiln tail.

[0008] Preferably, the middle section of the cylinder is further provided with an agitator, which includes a fixed frame, a first bevel gear, a second bevel gear, a rotating rod, a half-axis gear disk, a ring sleeve, and two cage gears. The fixed frame is set on the ground, the first bevel gear is set on the transmission rod, the rotating rod is rotatably engaged with the fixed frame, the second bevel gear is set on the rotating rod and meshes with the first bevel gear, the half-axis gear disk is set on the rotating rod, and the ring sleeve is set on the cylinder and rotatably engaged with the cylinder. The ring sleeve divides the cylinder into left and right parts. The two cage gears are fixedly set on the ring sleeve, and the outer walls of the two cage gears are rotatably engaged with the two ends of the cylinder divided by the ring sleeve, respectively. The inner walls of the two cage gears are rotatably engaged with the two ends of the cylinder, preventing air leakage and heat dissipation during the rotation of the ring sleeve. The cage gears mesh with the half-axis gear disk, and the inner wall of the ring sleeve is also provided with several protrusions.

[0009] Preferably, the kiln inlet portion of the cylinder is further provided with a vibrating discharge component, which is located in the kiln hood at the kiln inlet portion. The vibrating discharge component includes a collection box, a support base, a dual-axis motor, and two sets of symmetrically arranged vibrating components. The collection box is located in the kiln hood at the kiln inlet portion, the support base is fixedly mounted on the outer wall of the collection box, the dual-axis motor is mounted on the support base, and the two sets of vibrating components are respectively mounted on the support base, and the two sets of vibrating components are rotatably engaged with the support base.

[0010] Preferably, both sets of the vibrating components include a drive rod, a sleeve rod, a support frame, an elastic spring, an arc-shaped retaining seat, a drive disc, a drive lever, a belt, a sliding seat, a drive block, a return spring, and a vibrating frame. The drive rods on both sets of the vibrating components are respectively driven by the two main shafts of the dual-axis motor. The sleeve rod is sleeved on the drive rod, and the sleeve rod and the support seat are both rotatably and slidably engaged. The support frame is fixedly mounted on the top of the support seat. The drive disc is mounted on the support frame and is rotatably engaged with the support frame. The arc-shaped retaining seat is fixedly mounted on the top of the support seat. The drive disc also has opposing protrusions. The drive lever is fixedly connected to the sleeve rod, and the drive lever abuts against the protrusions on the drive disc. The arc-shaped retaining seat has two... The ends are inclined, and the drive lever abuts against the inclined parts at both ends of the arc-shaped card seat. The two ends of the elastic spring are respectively connected to the support seat and the support frame. The sliding seat is fixedly installed on the top of the collection box. The drive block is slidably installed on the sliding seat. The two ends of the belt are respectively connected to the drive disc and the drive block. The two ends of the return spring are respectively connected to the inner wall of the sliding seat and the drive block. The shaking frame is installed on the sleeve rod. The outer wall of the sliding seat has a moving groove. The outer wall of the drive block on the two sets of shaking components is fixedly connected to the feeding plate. The feeding plate is located above the collection box. The feeding plate has several holes. The shaking frame is made of flexible material and abuts against the feeding plate.

[0011] Preferably, the method of using the waste heat recovery device for a rotary kiln in ferromolybdenum smelting includes the following steps:

[0012] S1: When the rotary kiln body smelts ferromolybdenum, the temperature of the outer wall of the kiln cylinder gradually increases. This increased temperature is then transferred to the waste heat recovery tank. Operators fill the tank with water, which absorbs the heat from the outer wall of the cylinder, thus achieving waste heat recovery. During operation, the rotary kiln body utilizes a transmission mechanism. The transmission motor drives the transmission rod, which in turn drives two small gears. These gears then drive a large gear ring, causing the cylinder to rotate. As the cylinder rotates, the arc-shaped slide on the outer wall contacts the friction head on the heat-conducting rod, allowing the heat-conducting rod to pass through the universal ball joint in the waste heat recovery tank. The bottom of the heat recovery box deflects back and forth continuously. The deflection of the heat-conducting rod will drive the swinging plate to deflect inside the waste heat recovery box. When the water in the waste heat recovery box reaches a higher temperature, it can accelerate the evaporation of the water. The pressure relief valve on the waste heat recovery box is set towards the kiln hood. When the water in the waste heat recovery box absorbs heat from the cylinder and reaches the boiling point to produce water vapor, the pressure relief valve will open and move towards the kiln hood to suppress dust and impurities at the kiln tail. The heat generated on the outer wall of the cylinder can be quickly utilized through the waste heat recovery box to suppress dust at the kiln tail. When the friction head contacts the arc-shaped slide, the friction head can transfer the heat generated by friction to the waste heat recovery box through the heat-conducting rod, which can accelerate the heating of the water in the waste heat recovery box and improve the heat recovery efficiency of the waste heat recovery box.

[0013] S2: When the transmission device drives the cylinder to rotate and the cylinder conveys the ferromolybdenum material inside the cylinder, the transmission rod on the transmission device will drive the first bevel gear to rotate. The rotation of the first bevel gear will drive the second bevel gear to rotate. The rotation of the second bevel gear will drive the rotating rod to rotate. The rotating rod will drive the half-axis gear disk to rotate. The rotation of the half-axis gear disk will indirectly drive the two cage gears to rotate. Thus, the two cage gears can make the ring sleeve rotate forward and reverse on the cylinder. The ring sleeve, through the forward and reverse rotation, makes several protrusions on the inner wall of the ring sleeve agitate the ferromolybdenum material being conveyed in the cylinder, thereby avoiding the accumulation of ferromolybdenum material during processing and conveying.

[0014] S3: After the rotary kiln finishes smelting ferromolybdenum, the ferromolybdenum falls onto the feeding plate through the discharge end at the kiln opening. At this time, the dual-shaft motor drives the drive rods on the two sets of vibrating components to rotate. The rotation of the drive rods drives the sleeve rods to rotate, which in turn drives the drive paddles on the sleeve rods to rotate. The rotation of the drive paddles abuts against the protrusions on the drive disc, causing the drive disc to rotate on the support frame. The rotation of the drive disc on the support frame pulls the drive block on the sliding seat via a belt. The movement of the drive block drives the feeding plate to move, thus moving the feeding plate to the discharge end at the kiln opening to receive the ferromolybdenum material at the kiln opening discharge end. At this time, the ferromolybdenum falling onto the feeding plate forms a stack, which affects the subsequent conveying efficiency of the ferromolybdenum to the subsequent vibrating screen equipment. Meanwhile, as the drive rods continue to rotate, the drive paddles on the sleeve rods abut against a corner of the inclined arc-shaped card seat, causing the drive paddles to move horizontally. Moving the drive lever laterally causes the sleeve rod to move laterally on the drive rod, which in turn causes the vibrating frame to move laterally. This vibrating frame then disperses the ferromolybdenum stacked on the feed plate, spreading it out and improving the efficiency of subsequent vibrating screening. This avoids poor screening efficiency caused by ferromolybdenum stacking. After the feed plate receives the ferromolybdenum, a return spring pulls the feed plate to the subsequent processing equipment. This method of discharging ferromolybdenum effectively improves the efficiency of subsequent processing. Furthermore, this intermittent conveying method prevents continuous processing of the ferromolybdenum in the cylinder, which could cause excessive load on the equipment due to the weight of the ferromolybdenum, affecting its lifespan and thus increasing the equipment's service life and avoiding subsequent maintenance.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] In this invention, when the rotary kiln body smelts ferromolybdenum, the temperature of the outer wall of the kiln cylinder gradually increases. This increased temperature is then transferred to the waste heat recovery tank. The operator fills the tank with water, which absorbs the heat from the outer wall of the cylinder, thus achieving waste heat recovery. During operation, the rotary kiln body utilizes a transmission device. The transmission motor drives the transmission rod, which in turn drives two small gears. These gears then drive a large gear ring, causing the cylinder to rotate. As the cylinder rotates, the arc-shaped slide on the outer wall of the cylinder contacts the friction head on the heat-conducting rod, allowing the heat-conducting rod to pass through the universal ball joint in the waste heat recovery tank. The bottom of the heat recovery box continuously deflects back and forth. The deflection of the heat-conducting rod causes the swing vane to deflect within the heat recovery box. This accelerates the evaporation of water when it reaches a higher temperature. The pressure relief valve on the heat recovery box faces the kiln hood. When the water in the heat recovery box absorbs heat from the cylinder and reaches its boiling point to produce steam, the pressure relief valve opens and moves towards the kiln hood to suppress dust and impurities at the kiln tail. This allows the heat generated on the outer wall of the cylinder to be quickly utilized through the heat recovery box to suppress dust at the kiln tail. Furthermore, when the friction head contacts the arc-shaped slide, the friction head transfers the heat generated by friction to the heat recovery box through the heat-conducting rod, accelerating the heating of the water in the heat recovery box and improving its heat recovery efficiency.

[0017] In this invention, when the transmission device drives the cylinder to rotate and the cylinder conveys the ferromolybdenum material inside, the transmission rod on the transmission device drives the first bevel gear to rotate. The rotation of the first bevel gear drives the second bevel gear to rotate. The rotation of the second bevel gear drives the rotating rod to rotate. The rotating rod drives the half-axis gear disk to rotate. The rotation of the half-axis gear disk indirectly drives the two cage gears to rotate. Thus, the two cage gears enable the ring sleeve to rotate forward and backward on the cylinder. The forward and reverse rotation of the ring sleeve causes several protrusions on the inner wall of the ring sleeve to agitate the ferromolybdenum material being conveyed in the cylinder, thereby preventing the accumulation of ferromolybdenum material during processing and conveying.

[0018] In this invention, after the rotary kiln finishes smelting ferromolybdenum, the ferromolybdenum falls onto the feeding plate through the discharge end at the kiln opening. At this time, the dual-shaft motor drives the drive rods on the two sets of vibrating components to rotate. The rotation of the drive rods drives the sleeve rods to rotate, which in turn drives the drive paddles mounted on the sleeve rods to rotate. The rotation of the drive paddles abuts against the protrusions on the drive disc, causing the drive disc to rotate on the support frame. The rotation of the drive disc on the support frame pulls the drive block on the sliding seat via a belt. The movement of the drive block causes the feeding plate to move, thus moving the feeding plate to the discharge end at the kiln opening to receive the ferromolybdenum material at the kiln opening discharge end. At this time, the ferromolybdenum falling onto the feeding plate forms a stack, which affects the vibration and screening efficiency of the ferromolybdenum when it is subsequently conveyed to the subsequent vibrating screen equipment. Meanwhile, as the drive rods continue to rotate, the drive paddles on the sleeve rods abut against a corner inclined on the arc-shaped card seat, thus causing the drive paddles to rotate. Lateral movement of the drive lever causes the sleeve rod to move laterally on the drive rod, which in turn causes the vibrating frame to move laterally. This vibrating frame then disperses the ferromolybdenum stacked on the feed plate, spreading it out and improving the efficiency of subsequent vibrating screening. This avoids poor screening efficiency caused by ferromolybdenum stacking. After the feed plate receives the ferromolybdenum, a return spring pulls the feed plate to the subsequent processing equipment. This method of discharging ferromolybdenum effectively improves the efficiency of subsequent processing. Furthermore, this intermittent conveying method prevents continuous processing of the ferromolybdenum in the cylinder, which could cause excessive load on the equipment due to the weight of the ferromolybdenum, affecting its lifespan and thus increasing the equipment's service life and avoiding subsequent maintenance. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 A partial three-dimensional structural cross-section of the present invention. Figure 1 ;

[0021] Figure 3 A partial three-dimensional structural cross-section of the present invention. Figure 2 ;

[0022] Figure 4 This is a bottom view of a partial three-dimensional structure of the present invention;

[0023] Figure 5 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ;

[0024] Figure 6 This is a partial three-dimensional structural diagram of the agitator of the present invention;

[0025] Figure 7 This is a partial three-dimensional structural diagram of the present invention. Figure 2 ;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the material being shaken down according to the present invention;

[0027] Figure 9 This is a three-dimensional structural diagram of the vibrating element of the present invention.

[0028] In the diagram: 1. Rotary kiln body; 11. Cylinder; 111. Arc-shaped slide; 12. Tire; 13. Support roller; 14. Large gear ring; 15. Kiln hood; 16. Transmission device; 161. Bearing frame; 162. Transmission motor; 163. Transmission rod; 164. Pinion; 2. Waste heat recovery equipment; 21. Waste heat recovery box; 3. Rotating component; 31. Universal ball; 32. Heat-conducting rod; 33. Friction head; 34. Swinging paddle; 35. Pressure limiting valve; 4. Agitator; 41. Fixed frame; 42. First bevel gear; 43. Second bevel gear 44. Gear; 45. Rotating rod; 46. Half-axis gear disk; 47. Ring sleeve; 48. Protrusion; 49. Cage gear; 50. Vibrating drop component; 51. Collection box; 52. Support base; 53. Dual-shaft motor; 61. Vibrating drop component; 62. Drive rod; 63. Sleeve rod; 64. Support frame; 65. Elastic spring; 66. Arc-shaped card seat; 67. Drive disk; 68. Protrusion; 69. Drive lever; 60. Belt; 61. Sliding seat; 62. Drive block; 63. Return spring; 64. Vibrating drop frame; 65. Drop plate. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1 to 9This invention provides a technical solution: a waste heat recovery device for a rotary kiln in ferromolybdenum smelting, comprising a rotary kiln body 1, the rotary kiln body 1 including a cylinder 11, support rollers 13, a transmission device 16, and two large gear rings 14. The support rollers 13 and the transmission device 16 are placed on the ground, the cylinder 11 is mounted on the support rollers 13, and a tire 12 is provided at the position where the cylinder 11 is placed on the support rollers 13. The two large gear rings 14 are mounted on the outer wall of the cylinder 11, and the large gear rings 14 are in transmission cooperation with the transmission device 16. The transmission device 16 includes a support frame 161, a transmission motor 162, a transmission rod 163, and two small gears 164. The cylinder 161 is placed horizontally on the ground. The drive motor 162 is fixedly mounted on the support frame 161. The drive rod 163 is mounted on the main shaft of the drive motor 162 and rotates with the support frame 161. Two small gears 164 are mounted on the drive rod 163 and mesh with two large gear rings 14 respectively. The outer wall of the cylinder 11 is also provided with a waste heat recovery device 2. The two ends of the cylinder 11 are respectively provided with a kiln opening and a kiln tail. A kiln cover 15 is provided on both the kiln opening and the kiln tail. The bottom of the waste heat recovery device 2 is placed on the ground, and the inner wall of the waste heat recovery device 2 is in contact with the outer wall of the cylinder 11.

[0031] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the waste heat recovery device 2 includes a waste heat recovery box 21, the bottom of which is placed on the ground. The outer wall of the waste heat recovery box 21 is in contact with the outer wall of the cylinder 11. The waste heat recovery box 21 is filled with water. An arc-shaped slide rail 111 is provided on the outer wall of the cylinder 11 that is in contact with the waste heat recovery box 21. A rotating component 3 is provided inside the waste heat recovery box 21. The rotating component 3 is located at the inner bottom of the waste heat recovery box 21 and slides in cooperation with the arc-shaped slide rail 111.

[0032] The rotating component 3 includes a universal ball 31, a heat-conducting rod 32, and a swinging paddle 34. The universal ball 31 is located at the bottom of the waste heat recovery box 21 and rotates with the bottom of the waste heat recovery box 21. The heat-conducting rod 32 is fixedly located on the upper part of the universal ball 31 and is located outside the waste heat recovery box 21. The bottom of the heat-conducting rod 32 is also provided with a friction head 33, which slides with the arc-shaped slide rail 111. The heat-conducting rod 32 is located at the upper part of the universal ball 31 and is located inside the waste heat recovery box 21. The swinging paddle 34 is fixedly located at the top of the heat-conducting rod 32 and is arc-shaped.

[0033] The outer wall of the waste heat recovery box 21 is also provided with a pressure limiting valve 35, which is located inside the kiln cover 15 at the kiln tail.

[0034] When the rotary kiln body 1 smelts ferromolybdenum, the temperature of the outer wall of the cylinder 11 in the rotary kiln body 1 gradually increases. This increased temperature is then transferred to the waste heat recovery box 21. The operator fills the waste heat recovery box 21 with water, which absorbs the heat from the outer wall of the cylinder 11, thus achieving waste heat recovery. During operation, the rotary kiln body 1, through the transmission device 16, drives the transmission motor 162 to rotate the transmission rod 163. The rotation of the transmission rod 163 drives two small gears 164 to rotate, which in turn drives the large gear ring 14 to rotate the cylinder 11. When the cylinder 11 rotates, the arc-shaped slide 111 on the outer wall of the cylinder 11 contacts the friction head 33 on the heat-conducting rod 32, causing the heat-conducting rod 32 to pass through the universal ball 31. The heat-conducting rod 32 deflects repeatedly at the bottom of the waste heat recovery box 21, which in turn drives the swinging plate 34 to deflect within the waste heat recovery box 21. This accelerates the evaporation of water when it reaches a higher temperature. The pressure relief valve 35 on the waste heat recovery box 21 is positioned towards the kiln hood 15. When the water in the waste heat recovery box 21 absorbs heat from the cylinder 11 and reaches its boiling point to generate steam, the pressure relief valve 35 opens and moves towards the kiln hood 15 to reduce dust and impurities at the kiln tail. This allows the heat generated on the outer wall of the cylinder 11 to be quickly utilized through the waste heat recovery box 21 to reduce dust at the kiln tail. Furthermore, when the friction head 33 contacts the arc-shaped slide 111, the friction head 33 can transfer the heat generated by friction to the waste heat recovery box 21 through the heat-conducting rod 32, which accelerates the heating of water in the waste heat recovery box 21 and improves the heat recovery efficiency of the waste heat recovery box 21.

[0035] In this embodiment, as Figure 1 , Figure 5 and Figure 6As shown, an agitator 4 is also provided in the middle section of the cylinder 11. The agitator 4 includes a fixed frame 41, a first bevel gear 42, a second bevel gear 43, a rotating rod 44, a semi-reverse gear disk 45, a ring sleeve 46, and two cage gears 47. The fixed frame 41 is set on the ground. The first bevel gear 42 is set on the transmission rod 163. The rotating rod 44 is rotatably engaged with the fixed frame 41. The second bevel gear 43 is set on the rotating rod 44 and meshes with the first bevel gear 42. The semi-reverse gear disk 45 is set on the rotating rod 44. The ring sleeve 46 is disposed on the cylinder 11 and is rotatably engaged with the cylinder 11. The ring sleeve 46 divides the cylinder 11 into left and right parts. Two cage gears 47 are fixedly disposed on the ring sleeve 46, and the outer walls of the two cage gears 47 are rotatably engaged with the two ends of the cylinder 11 divided by the ring sleeve 46, and the inner walls of the two cage gears 47 are rotatably engaged with the two ends of the cylinder 11, thus preventing the ring sleeve 46 from leaking air and dissipating heat during rotation. The cage gears 47 mesh with the half-axis gear disk 45. The inner wall of the ring sleeve 46 is also provided with several protrusions 461.

[0036] In this embodiment, as Figure 1 , Figure 7 , Figure 8 and Figure 9 As shown, the kiln inlet of the cylinder 11 is also provided with a vibrating discharge component 5. The vibrating discharge component 5 is located in the kiln hood 15 at the kiln inlet. The vibrating discharge component 5 includes a collection box 51, a support base 52, a dual-axis motor 53, and two sets of symmetrically arranged vibrating components 6. The collection box 51 is arranged in the kiln hood 15 at the kiln inlet. The support base 52 is fixedly arranged on the outer wall of the collection box 51. The dual-axis motor 53 is arranged on the support base 52. The two sets of vibrating components 6 are respectively arranged on the support base 52, and the two sets of vibrating components 6 are rotatably engaged with the support base 52.

[0037] Both sets of vibrating components 6 include a drive rod 61, a sleeve rod 62, a support frame 63, an elastic spring 64, an arc-shaped retaining seat 65, a drive disc 66, a drive lever 67, a belt 68, a sliding seat 69, a drive block 691, a return spring 692, and a vibrating frame 693. The drive rod 61 on both sets of vibrating components 6 is respectively connected to the two main shafts of the dual-axis motor 53. The sleeve rod 62 is sleeved on the drive rod 61, and the sleeve rod 62 is both rotatably and slidably connected to the support seat 52. The support frame 63 is fixedly mounted on the top of the support seat 52. The drive disc 66 is mounted on the support frame 63, and the drive disc 66 is rotatably connected to the support frame 63. The arc-shaped retaining seat 65 is fixedly mounted on the top of the support seat 52. The drive disc 66 is also provided with oppositely arranged protrusions 661. The drive lever 67 is fixedly connected to the sleeve rod 62, and the drive lever 67 abuts against the protrusions 661 on the drive disc 66. The arc-shaped retaining seat 69 is fixedly mounted on the sleeve rod 62, and the drive lever 67 abuts against the protrusions 661 on the drive disc 66. The two ends of the 5 are inclined. The drive lever 67 and the inclined parts of the arc-shaped card seat 65 are in contact with each other. The two ends of the elastic spring 64 are respectively connected to the support seat 52 and the support frame 63. The sliding seat 69 is fixedly installed on the top of the collection box 51. The drive block 691 is slidably installed on the sliding seat 69. The two ends of the belt 68 are respectively connected to the drive disc 66 and the drive block 691. The two ends of the return spring 692 are respectively connected to the inner wall of the sliding seat 69 and the drive block 691. The shaking frame 693 is installed on the sleeve rod 62. The outer wall of the sliding seat 69 is provided with a moving groove. The outer walls of the drive blocks 691 on the two sets of shaking parts 6 are fixedly connected to the feed plate 694. The feed plate 694 is located above the collection box 51. The feed plate 694 is provided with several holes. The shaking frame 693 is made of flexible material. The shaking frame 693 and the feed plate 694 are in contact with each other.

[0038] After the rotary kiln finishes smelting ferromolybdenum, the ferromolybdenum falls onto the discharge plate 694 through the discharge end at the kiln opening. At this time, the dual-shaft motor 53 drives the drive rods 61 on the two sets of vibrating components 6 to rotate. The rotation of the drive rods 61 drives the sleeve rods 62 to rotate, which in turn drives the drive paddles 67 mounted on the sleeve rods 62 to rotate. The rotation of the drive paddles 67 causes them to abut against the protrusions 661 on the drive disc 66, thereby causing the drive disc 66 to rotate on the support frame 63 through the protrusions 661. The drive block 691 will be pulled by the belt 68 to move on the sliding seat 69. The movement of the drive block 691 will drive the feeding plate 694 to move, thus moving the feeding plate 694 to the feeding end of the kiln opening to receive the ferromolybdenum material at the kiln opening feeding end. At this time, the ferromolybdenum falling on the feeding plate 694 will form a stack, which will affect the vibration and screening efficiency of the ferromolybdenum when it is subsequently conveyed to the subsequent vibrating screen equipment. At this time, the drive rod 61 continues to rotate, and the drive lever 67 on the sleeve rod 62 will interact with the inclined set on the arc-shaped card seat 65. The angular contact causes the drive lever 67 to move laterally. This lateral movement of the drive lever 67, in turn, causes the sleeve rod 62 to move laterally on the drive rod 61. This movement of the sleeve rod 62, in turn, causes the vibrating frame 693 to move laterally. At this point, the vibrating frame 693 laterally disperses the ferromolybdenum stacked on the feed plate 694, allowing the ferromolybdenum to spread out on the feed plate 694. This improves the efficiency of ferromolybdenum screening during subsequent screening operations, preventing poor screening efficiency due to ferromolybdenum stacking. When the feed plate 694... After the iron is received, the return spring 692 can pull the unloading plate 694 to the equipment for subsequent processing of ferromolybdenum. This method of discharging ferromolybdenum achieves conveying and dispersing, effectively improving the efficiency of subsequent processing. Furthermore, this intermittent conveying method avoids continuous processing of the ferromolybdenum in the cylinder 11 during subsequent processing, which would cause excessive load on the equipment due to the weight of the ferromolybdenum, affecting the service life of the equipment, thus increasing the service life of the equipment and avoiding subsequent maintenance.

[0039] The method of use and advantages of the present invention: The working process of the waste heat recovery device for rotary kiln in ferromolybdenum smelting is as follows:

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown:

[0041] S1: When the rotary kiln body 1 smelts ferromolybdenum, the temperature of the outer wall of the cylinder 11 in the rotary kiln body 1 gradually increases. After the temperature of the outer wall of the cylinder 11 increases, the temperature of the outer wall of the cylinder 11 is transferred to the waste heat recovery box 21. The operator fills the waste heat recovery box 21 with water, which absorbs the heat from the outer wall of the cylinder 11, thereby achieving the effect of waste heat recovery. During the operation of the rotary kiln body 1, through the setting of the transmission device 16, the transmission motor 162 drives the transmission rod 163 to rotate. The rotation of the transmission rod 163 drives the two small gears 164 to rotate. The two small gears 164 drive the large gear ring 14 to rotate the cylinder 11. When the cylinder 11 rotates, the arc-shaped slide 111 on the outer wall of the cylinder 11 contacts the friction head 33 on the heat-conducting rod 32, thereby causing the heat-conducting rod 32 to pass through the universal ball 31. The heat-conducting rod 32, placed at the bottom of the waste heat recovery box 21, deflects back and forth. This deflection causes the swinging plate 34 to deflect within the waste heat recovery box 21. As a result, when the water in the waste heat recovery box 21 reaches a higher temperature, the evaporation of the water is accelerated. The pressure relief valve 35 on the waste heat recovery box 21 is set towards the kiln hood 15. When the water in the waste heat recovery box 21 absorbs heat from the cylinder 11 and reaches the boiling point to produce water vapor, the pressure relief valve 35 will open and move towards the kiln hood 15 to reduce dust and impurities at the kiln tail. This allows the heat generated on the outer wall of the cylinder 11 to be quickly utilized through the waste heat recovery box 21 to reduce dust at the kiln tail. When the friction head 33 contacts the arc-shaped slide 111, the friction head 33 can transfer the heat generated by friction to the waste heat recovery box 21 through the heat-conducting rod 32, which can accelerate the heating of the water in the waste heat recovery box 21 and improve the heat recovery efficiency of the waste heat recovery box 21.

[0042] S2: When the transmission device 16 drives the cylinder 11 to rotate, and the cylinder 11 conveys the ferromolybdenum material inside the cylinder, the transmission rod 163 on the transmission device 16 will drive the first bevel gear 42 to rotate. The rotation of the first bevel gear 42 will drive the second bevel gear 43 to rotate. The rotation of the second bevel gear 43 will drive the rotating rod 44 to rotate. The rotating rod 44 will drive the half-axis gear disk 45 to rotate. The rotation of the half-axis gear disk 45 will indirectly drive the two cage gears 47 to rotate. Thus, through the two cage gears 47, the ring sleeve 46 can achieve forward and reverse rotation on the cylinder 11. The ring sleeve 46, through forward and reverse rotation, causes the several protrusions 461 on the inner wall of the ring sleeve 46 to stir the ferromolybdenum material being conveyed in the cylinder 11, thereby avoiding the accumulation of ferromolybdenum material during processing and conveying.

[0043] S3: After the rotary kiln finishes smelting ferromolybdenum, the ferromolybdenum falls onto the discharge plate 694 through the discharge end at the kiln opening. At this time, the dual-shaft motor 53 drives the drive rods 61 on the two sets of vibrating components 6 to rotate. The rotation of the drive rods 61 drives the sleeve rods 62 to rotate, and the rotation of the sleeve rods 62 drives the drive paddles 67 set on the sleeve rods 62 to rotate. The rotation of the drive paddles 67 will abut against the protrusions 661 on the drive disc 66, thereby causing the drive disc 66 to rotate on the support frame 63 through the protrusions 661. Rotation will cause the drive block 691 to move on the sliding seat 69 via the belt 68. The movement of the drive block 691 will drive the feeding plate 694 to move, thereby moving the feeding plate 694 to the feeding end of the kiln opening to receive the ferromolybdenum material at the kiln opening feeding end. At this time, the ferromolybdenum falling on the feeding plate 694 will form a stack, which will affect the vibration and screening efficiency of the ferromolybdenum when it is subsequently conveyed to the subsequent vibrating screen equipment. At this time, the drive rod 61 continues to rotate, and the drive lever 67 on the sleeve rod 62 will be tilted against the arc-shaped card seat 65. The corner of the drive plate 67 is in contact with the material, causing the drive lever 67 to move laterally. This lateral movement of the drive lever 67 then causes the sleeve rod 62 to move laterally on the drive rod 61. The lateral movement of the sleeve rod 62 on the drive rod 61 then causes the vibrating frame 693 to move laterally. At this time, the vibrating frame 693 will laterally disperse the ferromolybdenum stacked on the feed plate 694, allowing the ferromolybdenum to spread out on the feed plate 694. This improves the efficiency of ferromolybdenum screening during subsequent screening operations and avoids poor screening efficiency due to ferromolybdenum stacking. When the feed plate 694 is in contact with the material, the drive lever 67 will move laterally. This will cause the drive lever 67 to move laterally, causing ... After the ferromolybdenum is received, the return spring 692 pulls the discharge plate 694 to the equipment for subsequent processing of the ferromolybdenum. This method of discharging the ferromolybdenum achieves the purpose of conveying and dispersing, which effectively improves the efficiency of subsequent processing of the ferromolybdenum. Furthermore, by using this intermittent conveying method to transport the ferromolybdenum, the equipment avoids continuous processing of the ferromolybdenum in the cylinder 11 during subsequent processing, which would cause excessive load on the equipment due to the weight of the ferromolybdenum, affecting the service life of the equipment, thereby increasing the service life of the equipment and avoiding subsequent maintenance.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a rotary kiln in ferromolybdenum smelting, comprising a rotary kiln body (1), wherein the rotary kiln body (1) comprises a cylinder (11), a support roller (13), a transmission device (16), and two large gear rings (14), wherein the support roller (13) and the transmission device (16) are placed on the ground, the cylinder (11) is mounted on the support roller (13), and a tire (12) is provided at the position where the cylinder (11) is mounted on the support roller (13), the two large gear rings (14) are mounted on the outer wall of the cylinder (11), and the large gear rings (14) are driven in conjunction with the transmission device (16), wherein the transmission device... The device (16) includes a support frame (161), a drive motor (162), a drive rod (163), and two pinions (164). The support frame (161) is placed horizontally on the ground. The drive motor (162) is fixedly mounted on the support frame (161). The drive rod (163) is mounted on the main shaft of the drive motor (162) and rotates with the support frame (161). The two pinions (164) are mounted on the drive rod (163) and mesh with two large gear rings (14), respectively. Its characteristic is that: The outer wall of the cylinder (11) is also provided with a waste heat recovery device (2). The two ends of the cylinder (11) are respectively provided with a kiln opening and a kiln tail. A kiln cover (15) is provided on both the kiln opening and the kiln tail. The bottom of the waste heat recovery device (2) is placed on the ground. The inner wall of the waste heat recovery device (2) is in contact with the outer wall of the cylinder (11). The waste heat recovery device (2) includes a waste heat recovery box (21), the bottom of which is placed on the ground. The outer wall of the waste heat recovery box (21) is in contact with the outer wall of the cylinder (11). The waste heat recovery box (21) is filled with water. An arc-shaped slide (111) is provided on the outer wall of the cylinder (11) in contact with the waste heat recovery box (21). A rotating part (3) is provided inside the waste heat recovery box (21). The rotating part (3) is located at the bottom of the waste heat recovery box (21), and the rotating part (3) slides in cooperation with the arc-shaped slide (111). The rotating component (3) includes a universal ball (31), a heat-conducting rod (32), and a swinging paddle (34). The universal ball (31) is located at the bottom of the waste heat recovery box (21), and the universal ball (31) rotates with the bottom of the waste heat recovery box (21). The heat-conducting rod (32) is fixedly located on the universal ball (31). The heat-conducting rod (32) is located in the lower half of the universal ball (31) and outside the waste heat recovery box (21). The bottom of the heat-conducting rod (32) is also provided with a friction head (33). The friction head (33) slides with the arc-shaped slide (111). The heat-conducting rod (32) is located in the upper half of the universal ball (31) and inside the waste heat recovery box (21). The swinging paddle (34) is fixedly located at the top of the heat-conducting rod (32), and the swinging paddle (34) is arc-shaped. The kiln opening of the cylinder (11) is also provided with a vibrating discharge component (5). The vibrating discharge component (5) is located in the kiln cover (15) at the kiln opening. The vibrating discharge component (5) includes a collection box (51), a support base (52), a dual-axis motor (53), and two sets of symmetrically arranged vibrating components (6). The collection box (51) is arranged in the kiln cover (15) at the kiln opening. The support base (52) is fixedly arranged on the outer wall of the collection box (51). The dual-axis motor (53) is arranged on the support base (52). The two sets of vibrating components (6) are respectively arranged on the support base (52), and the two sets of vibrating components (6) are rotatably engaged with the support base (52).

2. The waste heat recovery device for rotary kiln in ferromolybdenum smelting according to claim 1, characterized in that: The outer wall of the waste heat recovery box (21) is also provided with a pressure limiting valve (35), which is located inside the kiln cover (15) at the kiln tail.

3. The waste heat recovery device for rotary kiln in ferromolybdenum smelting according to claim 2, characterized in that: The cylinder (11) is also equipped with an agitator (4) in the middle section. The agitator (4) includes a fixed frame (41), a first bevel gear (42), a second bevel gear (43), a rotating rod (44), a half-axis gear disk (45), a ring sleeve (46), and two cage gears (47). The fixed frame (41) is set on the ground. The first bevel gear (42) is set on the transmission rod (163). The rotating rod (44) is rotatably engaged with the fixed frame (41). The second bevel gear (43) is set on the rotating rod (44) and meshes with the first bevel gear (42). The half-axis gear disk (45) is set on the rotating rod (44). The ring sleeve (46) is set on the cylinder (11) and the ring sleeve (46) is rotatably engaged with the cylinder (11). The ring sleeve (46) divides the cylinder (11) into left and right parts. The two cage gears (47) are fixedly set on the ring sleeve (46), and the outer walls of the two cage gears (47) are rotatably engaged with the two ends of the cylinder (11) divided by the ring sleeve (46). The inner walls of the two cage gears (47) are rotatably engaged with the two ends of the cylinder (11), thus avoiding the situation of air leakage and heat dissipation during the rotation of the ring sleeve (46). The cage gears (47) mesh with the half-axis gear disk (45). The inner wall of the ring sleeve (46) is also provided with several protrusions (461).

4. The waste heat recovery device for rotary kiln in ferromolybdenum smelting according to claim 3, characterized in that: Both sets of the vibrating components (6) include a drive rod (61), a sleeve rod (62), a support frame (63), an elastic spring (64), an arc-shaped bracket (65), a drive disc (66), a drive lever (67), a belt (68), a sliding seat (69), a drive block (691), a return spring (692), and a vibrating frame (693). The drive rod (61) on both sets of the vibrating components (6) is respectively connected to the two main shafts of the dual-axis motor (53). The sleeve rod (62) is sleeved on the drive rod (61), and the sleeve rod (62) is connected to the support frame (693). 52) The support frame (63) is fixedly mounted on the top of the support base (52), and the drive disk (66) is mounted on the support frame (63). The drive disk (66) and the support frame (63) are in a rotatable engagement. The arc-shaped card seat (65) is fixedly mounted on the top of the support base (52). The drive disk (66) is also provided with a protrusion (661) arranged opposite to it. The drive lever (67) is fixedly connected to the sleeve rod (62), and the drive lever (67) and the protrusion (661) on the drive disk (66) are in abutting engagement. The two ends of the arc-shaped card holder (65) are inclined. The drive lever (67) abuts against the inclined parts of the two ends of the arc-shaped card holder (65). The two ends of the elastic spring (64) are respectively connected to the support base (52) and the support frame (63). The sliding seat (69) is fixedly installed on the top of the collection box (51). The drive block (691) is slidably installed on the sliding seat (69). The two ends of the belt (68) are respectively connected to the drive disc (66) and the drive block (691). The two ends of the return spring (692) are respectively connected to the drive plate (66) and the drive block (691). The vibrating frame (693) is not connected to the inner wall of the sliding seat (69) and the driving block (691). The vibrating frame (693) is set on the sleeve rod (62). The outer wall of the sliding seat (69) is provided with a moving groove. The outer walls of the driving blocks (691) on the two sets of vibrating components (6) are fixedly connected with a feeding plate (694). The feeding plate (694) is located above the collection box (51). The feeding plate (694) is provided with several holes. The vibrating frame (693) is made of flexible material. The vibrating frame (693) and the feeding plate (694) are in contact and cooperate.

5. The method of using the waste heat recovery device for a rotary kiln in ferromolybdenum smelting according to claim 4, comprising the following steps: S1: When the rotary kiln body (1) smelts ferromolybdenum, the temperature of the outer wall of the cylinder (11) in the rotary kiln body (1) will gradually increase. After the temperature of the outer wall of the cylinder (11) increases, the temperature of the outer wall of the cylinder (11) will be transferred to the waste heat recovery box (21). The operator fills the waste heat recovery box (21) with water, and the water will absorb the heat from the outer wall of the cylinder (11). The heat from the outer wall of the cylinder (11) is absorbed to achieve the effect of waste heat recovery. During the operation of the rotary kiln body (1) In the process, through the transmission device (16), the transmission motor (162) drives the transmission rod (163) to rotate, and the rotation of the transmission rod (163) drives the two small gears (164) to rotate. The two small gears (164) drive the large gear ring (14) to rotate the cylinder (11). When the cylinder (11) rotates, the arc-shaped slide (111) on the outer wall of the cylinder (11) will contact the friction head (33) on the heat-conducting rod (32), thereby causing the heat-conducting rod (32) to pass through the universal ball ( The heat-conducting rod (32) is set at the bottom of the waste heat recovery box (21) and continuously deflects back and forth. The deflection of the heat-conducting rod (32) will drive the swinging plate (34) to deflect inside the waste heat recovery box (21). Thus, when the water in the waste heat recovery box (21) reaches a higher temperature, it can accelerate the evaporation of water. The pressure limiting valve (35) on the waste heat recovery box (21) is set towards the kiln cover (15). Thus, when the water in the waste heat recovery box (21) absorbs heat from the cylinder (11) and reaches the boiling point to generate water vapor, the pressure limiting valve (35) will open towards the kiln cover (15). Moving towards the kiln hood (15), the dust and impurities at the kiln tail are treated to reduce dust, and the heat generated by the outer wall of the cylinder (11) can be quickly used to reduce dust at the kiln tail through the waste heat recovery box (21). When the friction head (33) contacts the arc-shaped slide (111), the friction head (33) can transfer the heat generated by friction to the waste heat recovery box (21) through the heat conduction rod (32), which can accelerate the heating of water in the waste heat recovery box (21) and improve the heat recovery efficiency of the waste heat recovery box (21). S2: When the transmission device (16) drives the cylinder (11) to rotate, and the cylinder (11) conveys the ferromolybdenum material in the cylinder, the transmission rod (163) on the transmission device (16) will drive the first bevel gear (42) to rotate. The rotation of the first bevel gear (42) will drive the second bevel gear (43) to rotate. The rotation of the second bevel gear (43) will drive the rotating rod (44) to rotate. The rotating rod (44) will drive the half-axis gear disk (45) to rotate. The rotation of the half-axis gear disk (45) will indirectly drive the two cage gears (47) to rotate. Thus, through the two cage gears (47), the ring sleeve (46) can achieve forward and reverse rotation on the cylinder (11). The ring sleeve (46) will stir the ferromolybdenum material being conveyed in the cylinder (11) by the forward and reverse rotation of the ring sleeve (46). Thus, the ferromolybdenum material will avoid the accumulation of material during the processing and conveying process. S3: After the rotary kiln finishes smelting ferromolybdenum, the ferromolybdenum falls onto the discharge plate (694) through the discharge end at the kiln opening. At this time, the dual-shaft motor (53) will drive the drive rods (61) on the two sets of vibrating elements (6) to rotate. The rotation of the drive rods (61) will drive the sleeve rod (62) to rotate. The rotation of the sleeve rod (62) will drive the drive paddle (67) set on the sleeve rod (62) to rotate. The rotation of the drive paddle (67) will abut against the protrusion (661) on the drive disc (66), and then the drive disc (66) will rotate on the support frame (63) through the protrusion (661). (66) Rotating on the support frame (63) will pull the drive block (691) on the sliding seat (69) via the belt (68). The movement of the drive block (691) will drive the feeding plate (694) to move, thereby moving the feeding plate (694) to the feeding end of the kiln opening to receive the ferromolybdenum material at the feeding end of the kiln opening. At this time, the ferromolybdenum falling on the feeding plate (694) will form a stack, which will affect the vibration efficiency of the ferromolybdenum when it is subsequently transported to the subsequent vibrating screen equipment. At this time, the drive rod (61) continues to rotate, and the drive lever (67) on the sleeve rod (62) will... The angled corner of the curved bracket (65) abuts against the drive lever (67), causing the drive lever (67) to move laterally. The lateral movement of the drive lever (67) will cause the sleeve rod (62) to move laterally on the drive rod (61). The lateral movement of the sleeve rod (62) on the drive rod (61) will cause the vibrating frame (693) to move laterally. At this time, the vibrating frame (693) will laterally disperse the ferromolybdenum stacked on the feed plate (694), allowing the ferromolybdenum to spread out on the feed plate (694). This will improve the efficiency of ferromolybdenum screening during subsequent screening operations and avoid the vibration of ferromolybdenum due to stacking. The efficiency is poor. After the feeding plate (694) receives the ferromolybdenum, the return spring (692) can pull the feeding plate (694) to the equipment for subsequent processing of ferromolybdenum. When the ferromolybdenum is discharged in this way, it is conveyed and dispersed, which effectively improves the efficiency of subsequent processing of ferromolybdenum. Moreover, the intermittent conveying method is used to convey the ferromolybdenum, so that when the ferromolybdenum is processed in the cylinder (11), the equipment will not continuously process the ferromolybdenum in the cylinder (11), which will cause the equipment to be overloaded due to the excessive weight of the ferromolybdenum, affecting the service life of the equipment, thereby increasing the service life of the equipment and avoiding subsequent maintenance.

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