CN-122015101-A - Low-melting-loss high-efficiency combustion rotary kiln device

CN122015101ACN 122015101 ACN122015101 ACN 122015101ACN-122015101-A

Abstract

The application discloses a low-melting-loss high-efficiency combustion rotary kiln device, and belongs to the technical field of waste aluminum recovery equipment. The low-melting-loss high-efficiency combustion rotary kiln device comprises a base seat, rotary kiln equipment, a preliminary crushing mechanism and a screening mechanism, wherein the rotary kiln equipment is arranged on the base seat and comprises a rotary kiln cylinder, the preliminary crushing mechanism comprises a processing shell, a preliminary crushing assembly is arranged in the processing shell, the feeding mechanism is connected to a feed inlet of the processing shell, and the screening mechanism comprises an installation shell, and the screening assembly is arranged in the installation shell. According to the technical scheme, the preliminary crushing assembly and the screening mechanism are arranged, so that the materials can be subjected to preliminary crushing and screening before being smelted at high temperature, the relative consistency of the particle sizes of the materials entering the rotary kiln cylinder is ensured, the heating condition of the materials is greatly improved, the melting loss rate is effectively reduced, and the problems of extra transportation and site occupation caused by the traditional independent pretreatment are avoided.

Inventors

SHEN ZIHAO
WANG KAI
SHI JINGYAN
WANG JIAQI
XIE LEI
WANG ZHIHOU
WANG YONGLI
YANG AIWEN

Assignees

临沂利信铝业有限公司

Dates

Publication Date: 20260512
Application Date: 20260325

Claims (10)

1. The low melting loss and high efficiency combustion rotary kiln device is characterized by comprising: a base (1); The rotary kiln equipment is arranged on the foundation base (1) and comprises a kiln tail (2), a kiln head (3) and a rotary kiln cylinder (17) connected between the kiln tail and the kiln head, wherein the kiln tail (2) is connected with a feed pipe (16), and the kiln head (3) is connected with a discharge pipe (4); The primary crushing mechanism comprises a processing shell (10), a primary crushing assembly (8) is arranged in the processing shell (10), and waste aluminum or aluminum slag materials input by the primary crushing assembly (8) are subjected to primary crushing operation so as to reduce the whole size span of the waste aluminum or aluminum slag materials; the feeding mechanism is connected to a feeding hole of the processing shell (10) and used for conveying materials to be processed outside to a station of the preliminary grinding assembly (8), and a conveying pipe (15) is fixedly connected to the lower side of the processing shell (10); screening mechanism, screening mechanism includes installation casing (18), install screening subassembly (6) in installation casing (18), screening subassembly (6) are including at least one screening piece, conveyer pipe (15) are linked together with the feed end of screening piece, the feed pipe (16) other end is connected with the discharge gate of installation casing (18) lower extreme.
2. The low-melting-loss high-efficiency combustion rotary kiln device of claim 1, wherein a dredging mechanism is further arranged on one side of the conveying pipe (15), the dredging mechanism comprises a pushing rod (19) and at least one electric push rod (13), the pushing rod (19) is arranged in the conveying pipe (15) in a penetrating mode, and the telescopic end of the electric push rod (13) is fixedly connected with the pushing rod (19) and used for driving the pushing rod (19) to move along the axial direction of the pushing rod so as to dredge materials in the conveying pipe (15) and prevent the materials from being blocked in the conveying pipe (15).
3. The low melting loss high efficiency combustion rotary kiln device of claim 1, wherein the feeding mechanism comprises: The material guiding hopper (14) is penetrated and fixed on one side of the treatment shell (10), and an outlet at the lower end of the material guiding hopper (14) extends to a feeding station of the preliminary crushing assembly (8) and is used for guiding materials to a crushing area; The conveying belt (11), conveying belt (11) is inclined structure and sets up in one side of drawing hopper (14), conveying belt (11) discharge end links up with the upper portion feed inlet of drawing hopper (14).
4. The low melting point high efficiency combustion rotary kiln apparatus as set forth in claim 1, wherein the screen assembly (6) comprises a rotary screen section mounted in a sloped configuration within a mounting housing (18), the rotary screen section comprising: The screening cylinder (602), the screening cylinder (602) is of a cylindrical structure, and screen holes (615) are densely distributed on the cylinder wall in the circumferential direction; The two fixed cylinders (601) are arranged and are symmetrically arranged at two ends of the screening cylinder (602), the fixed cylinders (601) are fixedly arranged on the mounting shell (18), the screening cylinder (602) is rotatably arranged between the two fixed cylinders (601), the lower ends of the conveying pipes (15) are communicated with the fixed cylinders (601) above, the lower ends of the fixed cylinders (601) below are fixedly connected with waste pipes (616), and the waste pipes (616) are provided with discharge valves (604); and the rotating mechanism is used for driving the sieving cylinder (602) to rotate.
5. The low melting point efficient combustion rotary kiln device as set forth in claim 4, wherein a pushing mechanism is further installed in the rotary sifting portion, the pushing mechanism comprising: a second motor (611), the second motor (611) being mounted outside one of the stationary cylinders (601); The rotating rod (608) is rotatably arranged in the rotary screening part, and one end of the rotating rod (608) is fixedly connected with the output end of the second motor (611); and the auger delivery piece is fixedly arranged on the rotating rod (608).
6. The low melting point and high efficiency combustion rotary kiln apparatus as set forth in claim 5, wherein the rotary mechanism comprises: The transmission rod (614) is rotatably arranged outside one of the fixed cylinders (601), and a belt wheel (609) is sleeved and fixed on one side of the transmission rod (614) and one side of the rotation rod (608); A drive belt (610), the drive belt (610) being in frictional drive with the pulley (609); The second gear (607) is fixedly connected to the other side of the transmission rod (614); The gear ring (603), gear ring (603) sets up in screening section of thick bamboo (602) one side, gear ring (603) is connected with second gear (607) meshing.
7. The low melting loss high efficiency combustion rotary kiln apparatus as set forth in claim 5, wherein the auger delivery member comprises two first auger blades (612), the two first auger blades (612) are fixedly installed on the rotary rod (608) at a certain distance, and a grinding assembly (7) is disposed in correspondence with a gap area between the two first auger blades (612), the grinding assembly (7) comprises: the grinding ring (701) is embedded and fixed on the screening cylinder (602), and the inner ring surface of the grinding ring (701) forms a grinding working surface; A plurality of connecting rods, connecting rod fixed mounting is located the position between two first auger blade (612) at dwang (608), the connecting rod is evenly distributed in circumference, and is the alternately staggered arrangement in the axial, the connecting rod is made by the elastic expansion link, the elastic expansion link includes: a receiving sleeve (704), the receiving sleeve (704) being fixedly mounted on the rotating rod (608); a sliding rod (706), wherein the sliding rod (706) is slidably arranged outside the bearing sleeve (704), and the grinding roller is arranged at the outer end of the sliding rod (706); an elastic piece (705), wherein the elastic piece (705) is fixedly connected between the sliding rod (706) and the receiving sleeve (704); a plurality of grinding rollers, grinding rollers fixed mounting is at the connecting rod outer end, grinding rollers includes: a fixed roller (702), wherein the fixed roller (702) is fixedly arranged at the outer end of the sliding rod (706); At least one rotating roller (703), said rotating roller (703) being constrained to the end of the fixed roller (702) and being in rotational connection therewith.
8. The low melting loss high-efficiency combustion rotary kiln device of claim 7, wherein a flexible scraping blade (613) is fixedly arranged at the outer side edge of the first auger blade (612), the flexible scraping blade (613) is made of rubber or flexible wear-resistant materials with similar characteristics, the length direction of the flexible scraping blade (613) is matched with the spiral edge of the first auger blade (612), the flexible scraping blade (613) is kept in sliding contact with the inner wall of the screening cylinder (602), and buffer pieces are arranged at two ends of the screening cylinder (602) and comprise: The driving ring (605), the limit rotation of the driving ring (605) is installed at the inner end of the fixed cylinder (601); And the elastic connecting ring (606), the elastic connecting ring (606) is fixedly arranged between the driving ring (605) and the sieving cylinder (602), and the elastic connecting ring (606) is made of rubber or polyurethane elastic materials.
9. The low melting loss and high efficiency combustion rotary kiln device according to claim 1, wherein the installation shell (18) is fixedly connected with an exhaust pipe (12), a waste heat utilization assembly (9) is further installed on one side of the base seat (1), and the waste heat utilization assembly (9) comprises: the flue gas pipe (901) is arranged at one side of the kiln head (3) and is used for collecting flue gas generated after the kiln body burns; the tail gas burner (902) is arranged on the foundation base (1), and the gas outlet end of the flue gas pipe (901) is connected with the gas inlet end of the tail gas burner (902); The air inducing device (907), wherein the air inlet end of the air inducing device (907) is connected with the air outlet end of the tail gas burner (902); the air supply pipe (905) is fixedly connected to the air outlet end of the air inducing device (907); The gas distribution pipe (903), the gas distribution pipe (903) is fixedly connected with the other end of the gas supply pipe (905); The plurality of spray pipes (906), spray pipes (906) are fixedly connected to the gas distribution pipe (903) along a certain interval, and a one-way valve (904) is arranged on the gas outlet side of each spray pipe (906).
10. The low melting loss high-efficiency combustion rotary kiln device according to claim 1, wherein a feeding turnover assembly (5) is further installed in the rotary kiln cylinder (17), and the feeding turnover assembly (5) comprises: a third motor (501), the third motor (501) being mounted outside the rotary kiln cylinder (17); the rotary rod (502) is rotatably arranged in the rotary kiln cylinder (17), and the end part of the rotary rod (502) is connected with the output end of the third motor (501); A plurality of stirring rods (503), wherein the stirring rods (503) are fixedly arranged on the rotating rod (502); a plurality of material turning plates (505) are arranged on the radial outer side of the rotary rod (502), and the material turning plates (505) are fixedly connected with the outer end of the stirring rod (503); the feeding flipping assembly (5) further comprises: a rotating shaft (507), the rotating shaft (507) being rotatably arranged in the feed pipe (16); The second auger blade (506), the second auger blade (506) is fixed on the rotating shaft (507) in a sleeving manner; the driving mechanism is used for driving the rotation shaft (507) to rotate, and the driving mechanism comprises: The two bevel gears (508) are respectively sleeved and fixed on one side of the rotating shaft (507) and one side of the rotating rod (502), and the two bevel gears (508) are vertically meshed; the protection box (504) is covered on the outer sides of the two bevel gears (508) and is fixedly connected with the feeding pipe (16).

Description

Low-melting-loss high-efficiency combustion rotary kiln device Technical Field The application relates to the technical field of equipment for recycling waste aluminum, in particular to a low-melting-loss high-efficiency combustion rotary kiln device. Background Aluminum is used as an important basic metal material, and the recycling of the aluminum has extremely high economic value and environmental benefit. Compared with the smelting of the raw aluminum from bauxite, the production of the regenerated aluminum can save about 95 percent of energy sources and greatly reduce the emission of greenhouse gases. Therefore, the realization of high-efficiency and low-carbon recovery of waste aluminum has become a key link of the resource recycling industry. In many treatment processes, rotary kilns have been widely used in smelting and recycling operations for recycling aluminum materials such as scrap aluminum, aluminum-containing slag, and the like, due to their good material mixing and heat exchange characteristics. The document with the prior art publication number of CN113237324A provides a rotary kiln device, when the material is required to be conveyed into the kiln body, the material can be conveyed into the material pushing pipe through the feeding hopper, the first motor starts to drive the first rotating shaft and the driving gear to rotate, and then the driving gear is driven to rotate, the kiln body is driven to rotate, the material in the kiln body is driven to rotate conveniently, the first rotating shaft is driven to rotate, and then the second rotating shaft is driven to rotate, the conveying plate is driven to rotate conveniently, the conveying of the material is realized conveniently, the material, the smoke and the like are prevented from overflowing from the feeding hopper, and the phenomenon of frequent material spitting is prevented. The prior art scheme improves the feeding efficiency to a certain extent, reduces the shutdown caused by feeding faults, but still has the defects that the waste aluminum raw materials and aluminum-containing slag in actual production are generally complex in sources and different in forms, the waste aluminum or aluminum slag to be treated are difficult to pretreat by the technical scheme and most of rotary kiln devices on the market, if the materials which are not subjected to homogenization treatment are directly put into a rotary kiln, serious uneven heating is caused by mixing large-sized materials with small scraps, the materials with smaller volumes are burnt due to premature melting and oxidization, and the materials with larger volumes possibly form cold cores due to insufficient heat. The phenomenon not only can lead to low reaction efficiency in the kiln and severe fluctuation of the actual yield of the aluminum liquid, and cause obvious high melting loss problem, but also can additionally increase energy consumption due to prolonged heating time and insufficient reaction. And carrying out homogenization treatment on the waste aluminum or aluminum slag in advance, and then carrying out transfer and throwing. Although the furnace charging condition can be improved to a certain extent, additional equipment investment, factory building space and material transfer flow are increased, the whole treatment time is greatly prolonged, and the recovery efficiency is restrained from being improved. In view of the above, we propose a low melting loss and high efficiency combustion rotary kiln device. Disclosure of Invention 1. Technical problem to be solved The application aims to provide a low-melting-loss high-efficiency combustion rotary kiln device, which solves the technical problem that waste aluminum or aluminum slag to be treated is difficult to directly pretreat in the prior art, can primarily crush and screen materials, ensures the relative consistency of the particle sizes of the materials entering a rotary kiln cylinder, greatly improves the heating condition of the materials, and also avoids the problems of additional transportation and site occupation caused by the traditional independent pretreatment. 2. Technical proposal The embodiment of the application provides a low-melting-loss high-efficiency combustion rotary kiln device, which comprises: a base; The rotary kiln equipment is arranged on the foundation base and comprises a kiln tail, a kiln head and a rotary kiln barrel connected between the kiln tail and the kiln head, wherein the kiln tail is connected with a feed pipe, and the kiln head is connected with a discharge pipe; The primary crushing mechanism comprises a processing shell, a primary crushing assembly is arranged in the processing shell, and waste aluminum or aluminum slag materials input by the primary crushing assembly are subjected to primary crushing operation so as to reduce the whole size span of the waste aluminum or aluminum slag materials; the feeding mechanism is connected to a feeding hole of the processing shell and used