CN212299894U - Rotary kiln feeding system and production equipment - Google Patents

Abstract

The utility model belongs to the technical field of the rotary kiln technology optimization, a rotary kiln charging system and production facility is related to. The utility model discloses a rotary kiln feeding system, which comprises a feeding trolley, a top pulley, a motor, a feeding slope and a feeding device, wherein one end of a steel rope is connected with the feeding trolley, the other end of the steel rope is connected with the motor by bypassing the top pulley, and the feeding trolley is placed on the feeding slope; a feeding extension section is arranged at the discharging end of the feeding slope, a discharging opening is formed in the feeding extension section, and waste steel can fall into a feeding device below through the discharging opening during discharging; the utility model also provides a rotary kiln production facility, including rotary kiln and 1 at least feeding system. The utility model discloses combine together not fragile material loading dolly and slope, replaced the grab bucket lifting machine and the belt of being worn and torn easily by the scrap steel, solved the problem of equipment wear among the prior art.

Description

Rotary kiln feeding system and production equipment

Technical Field

The utility model relates to a rotary kiln process optimization technical field, more specifically say, relate to a rotary kiln feeding system and production system.

Background

The global yield of galvanized sheet coils is continuously increased, the global yield is 1.208 hundred million tons in 2014, 5070 million tons of galvanized sheet coils are produced in China, the global yield of 2016 reaches 1.55 million tons, and the steel-making OG mud has high zinc content due to the large quantity of higher zinc-containing steel scraps of a steel-making steel scrap company. Meanwhile, steel-making OG mud of a first steel rolling main factory, a fourth steel rolling main factory and a long material business department of a steel works company is totally recycled and added into the blast furnace for cyclic utilization in a sintering process, so that the zinc load of the blast furnace is increased, and the stable and smooth operation of the blast furnace is influenced. Therefore, the rotary kiln is especially necessary for dezincification treatment of the scrap steel.

The rotary kiln is a rotary calcining kiln, and can be divided into a cement kiln, a metallurgical chemical kiln and a lime kiln according to different materials to be treated. The cement kiln is mainly used for calcining cement clinker and comprises a dry-process cement kiln and a wet-process cement kiln. The metallurgical chemical kiln is mainly used for the following aspects: (1) carrying out magnetizing roasting on lean iron ore in steel plants in the metallurgical industry; (2) oxidizing and roasting chromium and nickel iron ores; (3) roasting the bauxite in a refractory material factory; (4) roasting clinker and aluminum hydroxide in an aluminum plant; (5) roasting chromium ore sand, chromium ore powder and other minerals in a chemical plant. The lime kiln (i.e. active lime kiln) is used for roasting active lime and light-burned dolomite required by steel plants and iron alloy plants. When the rotary kiln is used, slag is generally fed to the top of the rotary kiln in a grab bucket elevator or a conveying belt mode, and then slowly falls into a kiln head to be combusted along with the rotation of the rotary kiln.

Scrap steel is a novel material, and traditional loading attachment grab bucket elevator and conveyer are not suitable for snatching the scrap steel. Because the shape of the scrap steel is irregular and the hardness is high, the efficiency of the grab bucket elevator is low, and the grab bucket elevator is easy to damage. Moreover, scrap steel edges are sharp, and the belt made of fibers is easy to damage. Therefore, there is a need to develop a feeding device for scrap steel.

The applicant Shenzhen Jinlingnan nonferrous metal shares Limited in the market develops a novel feeding mode and submits an invention and creation application in 2018, 1 month and 30 days, wherein the specific information is as follows, and the application number is as follows: CN201820154579.0, inventive name: a rotary kiln charging device, applicant: jinlingnan nonferrous metals, Inc. in Shenzhen City, filing date: year 2018, month 1 and day 30. The utility model relates to a rotary kiln feeding device, which comprises a disc feeder, a plurality of conveying belts, a plurality of plough type dischargers, a control module and a rotary kiln; the plurality of conveying belts are sequentially butted end to end, and the plurality of plough type dischargers are respectively arranged between the two conveying belts; the disc feeder is arranged at the starting end of the conveying belt; a feeding port is arranged at the tail end of the conveying belt and is in butt joint with the top of the rotary kiln; the control module controls the disc feeder, the plurality of conveying belts and the plurality of plough type dischargers to operate. The belt is still used in the feeding mode, so that the equipment is easy to damage and short in service life.

Therefore, the traditional grab bucket elevator or the conveying belt and the feeding method of the patent are not suitable for feeding the scrap steel. How to feed the scrap steel in the process of treating the scrap steel by using the rotary kiln is an urgent problem to be solved in the prior art.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

The utility model provides a rotary kiln feeding system aiming at the problem that the waste steel is easy to damage equipment in the process of processing the waste steel by the existing rotary kiln, one end of a steel rope is connected with a feeding trolley, the other end of the steel rope bypasses a top pulley and is connected with a motor, and the feeding trolley is arranged on a feeding slope; the discharge end on material loading slope is provided with the material loading extension section, and this material loading extension section is provided with the discharge opening, and during the time of unloading, steel scrap accessible discharge opening falls into the feed arrangement of below. The utility model discloses combine together not fragile material loading dolly and material loading slope, replaced the grab bucket lifting machine and the belt of being worn and torn easily by the scrap steel, not only guaranteed the efficiency of transportation, still solved the problem of equipment wear among the prior art.

Further, the utility model also provides a rotary kiln production facility, including a plurality of feeding system, further improved rotary kiln charge-in efficiency, do not harm equipment moreover.

2. Technical scheme

The utility model discloses a rotary kiln feeding system, which comprises a feeding trolley, a top pulley, a motor, a feeding slope and a feeding device, wherein the feeding slope extends upwards from a charge level position, a discharging end of the feeding slope is provided with a feeding extension section, and the feeding extension section extends upwards from a discharging end; the feeding extension section is provided with a discharge opening, a feeding device is arranged between the discharge end of the feeding slope and the kiln tail of the rotary kiln, and the feeding device is positioned below the discharge opening of the feeding extension section; the feeding trolley is arranged on the feeding slope and can move along the length direction of the feeding slope, the feeding trolley is connected with the motor through a steel rope, one end of the steel rope is connected with the feeding trolley, and the other end of the steel rope is connected with the motor by bypassing the top pulley; the top pulley is positioned above the feeding extension section.

Preferably, the material loading slope is provided with a first slope surface and a second slope surface from bottom to top in sequence, and the slope of the first slope surface is greater than the slope of the second slope surface.

Preferably, the top pulley is arranged between the feeding slope and the rotary kiln, the ground clearance of the top pulley is D1, the height of the feeding trolley is D2, the ground clearance of one end, away from the feeding slope, of the feeding extension section is D3, and D1 is more than D2+ D3.

Preferably, the bottom of the feeding trolley is movably provided with a bottom plate, a rotating shaft and a control device are arranged at the connecting end of the bottom plate and one side of the feeding trolley, the rotating shaft is electrically connected with the control device, or the bottom of the feeding trolley is movably provided with a bottom plate, the connecting ends of the bottom plate and the two opposite sides of the feeding trolley are provided with a rotating shaft and a control device, and the rotating shaft is electrically connected with the control device.

Preferably, the top pulley is a fixed pulley, and the steel rope between the feeding trolley and the motor is further provided with at least 1 pulley.

Preferably, the included angle alpha formed by the second slope surface of the feeding slope and the ground is 30-60 degrees.

Preferably, the slope of the feeding extension section is smaller than that of the second slope surface.

Preferably, the one end that the material loading extension was kept away from the material loading slope is provided with limit baffle.

Preferably, the control device is an electromagnet.

The utility model also provides a rotary kiln production facility, including rotary kiln and 1 at least feeding system, feeding system is the rotary kiln scrap steel feeding system of above-mentioned arbitrary one.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a rotary kiln feeding system, arrange the material loading dolly in the material loading slope, the material loading dolly is connected with the motor through the steel cable, the pulley is used for changing the direction of the pulling force that the motor provided, make the material loading dolly can be along the material loading slope upward movement, after the material loading dolly moves to the material loading extension section, and pour the scrap steel into the rotary kiln, the material loading dolly depends on gravity to fall back to the material loading slope bottom; the top pulley is positioned above the feeding extension section and can position the feeding trolley above the rotary kiln; the feeding device is located below the discharge opening of the feeding extension section, and during discharging, the scrap steel can directly fall into the feeding device from the discharge opening, so that the feeding efficiency is improved. The utility model discloses combine together not fragile material loading dolly and slope, replaced the grab bucket lifting machine and the belt of being worn and torn easily by the scrap steel, solved the problem of equipment wear among the prior art.

(2) The utility model discloses a rotary kiln feeding system, the lower part of material loading slope is provided with the first domatic, and the first domatic can make the small-form scrap steel can the landing in the material loading process, prevents it to pile up on the material loading slope, influences the motion of material loading dolly; a feeding device is arranged between the top end of the feeding slope and the rotary kiln, so that the waste steel can accurately enter the rotary kiln after being poured into the feeding device by the feeding trolley, and the waste steel before entering the rotary kiln can be buffered, thereby avoiding damaging the kiln body of the rotary kiln.

(3) In the rotary kiln feeding system of the utility model, the pulley is arranged between the feeding slope and the rotary kiln, and the ground clearance of the pulley is higher than the sum of the ground clearance at the top end of the feeding extension section and the height of the feeding trolley; this design can prevent that the material loading dolly from can't unloading when moving to the top of material loading extension section, has improved the material loading efficiency of device.

(4) The utility model discloses a rotary kiln feeding system, the bottom plate of material loading dolly is through pivot movable mounting with the material loading dolly through the pivot to through controlling means control bottom plate switch, the bottom plate is closed when feeding and transporting, and the suppression is loaded and is dropped from the dolly with material loading process fritter scrap steel, and the bottom plate is automatic to be opened so that unload when the top is unloaded.

(5) In the rotary kiln feeding system, the top pulley is a fixed pulley, so that the rotary kiln feeding system is convenient for a user to install; moreover, the pulley block can be arranged between the feeding trolley and the motor, the arrangement position and the number of the pulleys can be changed through the field condition, and the industrial practicability and the applicability are extremely strong.

(6) The utility model discloses a rotary kiln feeding system, the included angle formed by the second slope surface of the feeding slope and the ground is 30-60 degrees, if the included angle is too small, the slope is too long, and the feeding efficiency is low; the included angle is too large, the motor does more work, the energy consumption is large, and the motor is easy to damage; when the included angle is 30-60 degrees, the feeding efficiency is high, and the energy consumption is relatively low.

(7) The utility model discloses a rotary kiln production facility is provided with a plurality of feeding systems, can run a plurality of feeding systems at the same time, greatly improves the feeding efficiency of the device; moreover, other pollutants are not generated in the operation process of the feeding system, energy conservation and emission reduction are realized, safety and environmental protection are realized, and zero pollution and zero emission are basically realized.

Drawings

Fig. 1 is a schematic view (one) of a feeding system of the present invention;

FIG. 2 is a schematic view (II) of the feeding system of the present invention

Fig. 3 is a detailed position diagram of the production system and the forklift of the present invention;

fig. 4 is a side view of a loading trolley in embodiment 1 of the present invention;

fig. 5 is a bottom view of the feeding cart in embodiment 2 of the present invention;

fig. 6 is a top view of the production system of the present invention.

In the figure: 100. a feeding slope; 110. a first slope surface; 120. a second slope surface; 130. a discharge end; 131. a limit baffle; 140. a feeding extension section; 150. a guide rail; 200. a motor; 300. a feeding trolley; 310. a base plate; 320. a rotating shaft; 330. a steel cord; 340. a traction end; 400. a top pulley; 500. a rotary kiln; 600. a feeding device; 700. a forklift; 800. and (5) material level.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

The utility model provides a rotary kiln charging system, as shown in fig. 1, by material loading dolly 300, top pulley 400, motor 200, material loading slope 100 and feed arrangement 600 constitute. The motor 200 is used for providing power for the feeding trolley 300, and a speed reducer can be arranged on the motor for controlling the movement speed of the feeding trolley 300. The feeding slope 100 extends upwards from the material level 800, the discharge end 130 is further provided with a feeding extension section 140, and the feeding extension section 140 extends upwards from the discharge end 130. This material loading extension section 140 is provided with the discharge opening, and feed arrangement 600 is located the below of the discharge opening of material loading extension section 140, and when material loading dolly 300 moved to the discharge opening and unloads, the scrap steel can directly fall into on feed arrangement 600 through the discharge opening. Further, the feeding extension section 140 may be composed of two steel rails, or may be a slope surface provided with a discharge opening. As shown in fig. 2, a limit baffle 131 is disposed at an end of the feeding extension section 140 away from the feeding slope 100 to prevent the feeding trolley 300 from derailing and falling into the rotary kiln 500 when moving to the highest point. The slope of the feeding extension section 140 is smaller than the slope of the second slope surface 120, so that the discharged feeding trolley 300 can fall back to the material level 800 under the action of gravity while the discharging of the feeding trolley 300 is facilitated.

The feeding trolley 300 is arranged on the feeding slope 100, the feeding trolley 300 can move along the length direction of the feeding slope 100, the feeding trolley 300 is connected with the motor 200 through a steel rope 330, namely, one end of the steel rope 330 is connected with the feeding trolley 300, and the other end of the steel rope 330 bypasses the top pulley 400 to be connected with the motor 200. The traction end 340 of the feeding trolley 300 is connected with the motor 200 through the steel rope 330, and then the top pulley 400 is arranged at a proper position to change the direction of the steel rope 330, so that the direction of the force of the motor 200 to the feeding trolley 300 is changed, and the feeding trolley 300 moves up and down along the feeding slope 100. The bottom of the feeding trolley 300 is movably provided with a bottom plate 310, a rotating shaft 320 and a control device are arranged at the connecting end of the bottom plate 310 and one side of the feeding trolley 300, and the rotating shaft 320 is electrically connected with the control device. In addition, the bottom plate 310 may also be provided with a rotating shaft 320 at the opposite side connecting ends of the feeding trolley 300. The control device controls the rotation of the rotating shaft 320, and thus controls the opening and closing of the bottom plate 310. The control device of the feeding trolley 300 can be an electromagnet, and can also be other devices capable of realizing automatic switch control.

The top pulley 400 is disposed above the feeding extension 140 for changing the direction of the force of the motor 200. As shown in fig. 2, the top pulley 400 is disposed between the feeding ramp 100 and the rotary kiln 500, the ground clearance of the top pulley 400 is D1, the height of the feeding trolley 300 is D2, the ground clearance of the end of the feeding extension 140 away from the feeding ramp 100 is D3, and D1 > D2+ D3. This design can prevent that material loading dolly 300 from can't unloading when moving to the peak, has improved the material loading efficiency of device. It should be noted that the top pulley 400 is a fixed pulley, which facilitates changing the pulling direction of the motor 200. Furthermore, the steel cable 330 between the feeding trolley 300 and the motor 200 can be further provided with a pulley block consisting of at least one pulley according to actual requirements.

The feeding slope 100 is provided with a first slope surface 110, the first slope surface 110 is arranged at the lower part of the feeding slope 100, and the gradient of the first slope surface 110 is greater than that of a second slope surface 120 of the feeding slope 100. The first slope surface 110 can enable small scrap steel to slide down during feeding, and prevent the small scrap steel from being accumulated on the feeding slope 100 and influencing the movement of the feeding trolley 300. An included angle alpha formed by the second slope surface 120 of the feeding slope 100 and the ground is 30-60 degrees, if the included angle is too small, the feeding slope 100 is too long, and the feeding efficiency is low; the included angle is too large, the motor 200 does more work, the energy consumption is large, and the motor 200 is easy to damage; when the included angle is 30-60 degrees, the feeding efficiency is high, and the energy consumption is relatively low. It should be noted that, as shown in fig. 6, a guide rail 150 or a groove for the feeding trolley 300 to run may be provided on the slope surface of the feeding slope 100. Be provided with feed arrangement 600 between the kiln tail of discharge end 130 of material loading slope 100 and rotary kiln 500, feed arrangement 600 can be for feed hopper, also can be other structures that have a transport inclined plane, in the feed trolley 300 of being convenient for pours the scrap steel into feed arrangement 600 back can accurate entering rotary kiln 500 to for the scrap steel that gets into rotary kiln 500 provides the buffering, avoid damaging the kiln body.

It is worth explaining that the utility model discloses still include a rotary kiln production facility, including rotary kiln 500 and at least 1 feeding system, promptly in this production system, both can set up 1 feeding system, also can be provided with 2 or more than 2 feeding systems. In this embodiment, the rotary kiln production equipment is provided with 2 feeding systems, a forklift 700 is arranged between the 1 and 2 feeding systems, and the forklift 700 is responsible for the feeding work of the two feeding systems. By controlling the speed of the feeding trolley 300, the other feeding trolley 300 conveys materials upwards when the forklift 700 feeds the materials, and after the feeding is finished, the other feeding trolley 300 just reaches the bottom, so that the feeding work is continuous. Use the electro-magnet as material loading dolly 300 controlling means in this embodiment, material loading dolly 300 electro-magnet is automatic to be opened when loading and transportation to restrain the fritter steel scrap and drop from material loading dolly 300, electro-magnet self-closing is in order to unload when the top is unloaded. In this embodiment, as shown in fig. 4, a rotating shaft 320 and a control device are disposed at a connecting end of the bottom plate 310 and one side of the feeding trolley 300, and the rotating shaft 320 is electrically connected to the control device.

The specific implementation method comprises the following steps:

the method comprises the following steps: the charging trolley 300 is assembled and connected with the motor 200

Before loading, the loading trolley 300 needs to be connected with the motor 200, the loading trolley 300 is connected with the motor 200 by the steel rope 330 at the traction end 340 of the loading trolley 300, as shown in fig. 1, the direction of the steel rope 330 is changed by installing 1 pulley block consisting of a top pulley 400 and two pulleys, so that the direction of power provided by the motor 200 is changed, and finally the steel rope 330 is connected with the motor 200.

Step two: preparing galvanized scrap steel

The size of the galvanized steel scrap as the raw material of the material has certain requirements, the size length of the broken material steel scrap is 10 cm-15 cm, and the sheet length of the galvanized steel scrap is 10 cm-15 cm.

Step three: forklift 700 feeding

When the feeding starts, the feeding trolley 300 is positioned at the bottom of the feeding slope 100, and the electromagnet of the feeding trolley 300 is opened to inhibit small pieces of scrap steel from falling from the feeding trolley 300. Broken materials or galvanized sheet scrap steel are added into the feeding trolleys 300 by adopting a manual feeding method, and the forklift 700 is responsible for two feeding systems and for feeding of the two feeding trolleys 300, so that the feeding speed and the feeding efficiency are improved.

Step four: charging material into the feeding device 600, and scrap steel into the rotary kiln 500

When the forklift 700 fills up the feeding trolley 300 No. 1, the motor 200 is started to control the feeding trolley 300 No. 1 to move upwards, and at this time, the forklift 700 charges the feeding trolley 300 No. 2. When the No. 1 feeding trolley 300 reaches the top end, the electromagnet arranged on the feeding trolley 300 is closed, the bottom plate 310 is opened, and the No. 1 feeding trolley 300 pours the scrap steel into the feeding device 600 at the tail of the rotary kiln 500. After the material pouring is finished, the feeding trolley 300 No. 1 is controlled to move downwards, when the feeding trolley 300 No. 1 reaches the bottom, the feeding trolley 300 No. 2 finishes the feeding at the moment, the feeding trolley 300 No. 2 is controlled to move upwards, the feeding trolley 300 No. 1 is fed, and the process is circulated.

Example 2

The basic content of this embodiment is the same as that of embodiment 1, except that, as shown in fig. 5, the bottom plate 310 of the feeding trolley 300 is connected to the opposite side connecting ends of the bottom of the feeding trolley 300 through the rotating shaft 320. Further, as shown in fig. 2, the feeding system of the present embodiment is provided with only 1 top pulley 400.

Furthermore, as shown in fig. 3, in order to further increase the feeding speed and increase the yield, the feeding amount is increased by adding a feeding system. In this embodiment, 4 feeding lines (feeding lines 1, 2, 3, 4) are provided, and two forklifts 700 are arranged to load, one forklift 700 is responsible for the loading operation of the loading trolleys 300 of the feeding lines 1, 2, and the other forklift 700 is responsible for the loading operation of the loading trolleys 300 of the feeding lines 3, 4. The motor 200 is now connected to four feed lines.

The motor 200 operates while controlling the feed lines 1, 4 and 2, 3. Firstly, two forklifts 700 start to respectively load the loading trolleys 300 of the feeding production lines 1 and 4, the electromagnets of the loading trolleys 300 are opened, after the loading is finished, the motor 200 is controlled to enable the loading trolleys 300 of the feeding production lines 1 and 4 to simultaneously move upwards, the electromagnets of the loading trolleys 300 are closed, and simultaneously the unloading trolleys move downwards. After the loading of the loading trolleys 300 of the feeding production lines 1 and 4 is finished, the forklift 700 simultaneously loads the loading trolleys 300 of the feeding production lines 2 and 3, and the process is repeated.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. A rotary kiln charging system which is characterized in that: the automatic feeding device comprises a feeding trolley (300), a top pulley (400), a motor (200), a feeding slope (100) and a feeding device (600), wherein the feeding slope (100) extends upwards from a material surface (800), a discharging end (130) of the feeding slope (100) is provided with a feeding extension section (140), and the feeding extension section (140) extends upwards from a discharging end (130); the feeding extension section (140) is provided with a discharge opening, a feeding device (600) is arranged between the discharge end (130) of the feeding slope (100) and the kiln tail of the rotary kiln (500), and the feeding device (600) is positioned below the discharge opening of the feeding extension section (140);

the feeding trolley (300) is arranged on the feeding slope (100), the feeding trolley (300) can move along the length direction of the feeding slope (100), the feeding trolley (300) is connected with the motor (200) through a steel rope (330), one end of the steel rope (330) is connected with the feeding trolley (300), and the other end of the steel rope (330) bypasses the top pulley (400) and is connected with the motor (200); the top pulley (400) is positioned above the feeding extension section (140).

2. The rotary kiln charging system as claimed in claim 1, wherein: the feeding slope (100) is sequentially provided with a first slope surface (110) and a second slope surface (120) from bottom to top, and the gradient of the first slope surface (110) is greater than that of the second slope surface (120).

3. The rotary kiln charging system as claimed in claim 1, wherein: the top pulley (400) is arranged between the feeding slope (100) and the rotary kiln (500), the ground clearance of the top pulley (400) is D1, the height of the feeding trolley (300) is D2, the ground clearance of one end, away from the feeding slope (100), of the feeding extension section (140) is D3, and D1 is more than D2+ D3.

4. The rotary kiln charging system as claimed in claim 1, wherein: the bottom of the feeding trolley (300) is movably provided with a bottom plate (310), a rotating shaft (320) and a control device are arranged at the connecting end of the bottom plate (310) and one side of the feeding trolley (300), and the rotating shaft (320) is electrically connected with the control device, or

The bottom of the feeding trolley (300) is movably provided with a bottom plate (310), the connecting ends of two opposite sides of the bottom plate (310) and the feeding trolley (300) are provided with a rotating shaft (320) and a control device, and the rotating shaft (320) is electrically connected with the control device.

5. The rotary kiln charging system as claimed in claim 1, wherein: the top pulley (400) is a fixed pulley, and at least 1 pulley is further arranged on a steel rope (330) between the feeding trolley (300) and the motor (200).

6. The rotary kiln charging system as claimed in claim 1, wherein: the included angle alpha formed by the second slope surface (120) of the feeding slope (100) and the ground is 30-60 degrees.

7. A rotary kiln charging system as claimed in claim 2, wherein: the gradient of the feeding extension section (140) is smaller than that of the second slope surface (120).

8. A rotary kiln charging system as claimed in claim 3, wherein: and a limiting baffle (131) is arranged at one end, away from the feeding slope (100), of the feeding extension section (140).

9. The rotary kiln charging system as claimed in claim 4, wherein: the control device is an electromagnet.

10. A rotary kiln production facility which is characterized in that: comprising a rotary kiln (500) and at least 1 feeding system, said feeding system being a rotary kiln feeding system according to any one of claims 1-9.

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