Suspension preheating equipment for calcining carbonate powder

Abstract

The utility model provides suspension preheating equipment for calcining carbonate powder, which comprises a rack, a conveying pipe arranged on one side of the rack, a dust collector arranged at the top of the rack, and a first high-temperature cyclone arranged at the top of the dust collector. According to the suspension preheating equipment for calcining the carbonate powder, the entering carbonate powder is uniformly dispersed in high-temperature airflow through the gas pipelines of the first high-temperature cyclone and the second high-temperature cyclone, heat exchange is carried out in a suspension state, then the first high-temperature cyclone is brought by hot gas, and the carbonate powder is uniformly dispersed in the high-temperature airflow; and the raw powder rotates in the first high-temperature cyclone cylinder to generate centrifugal force, the raw powder is separated from the flue gas under the action of gravity center and gravity, is settled, then falls into an airflow pipeline between equipment, is suspended and is subjected to secondary heat exchange with the flue gas, and finally, the material is separated from the hot waste gas, is fed into a conveying pipe through an impeller air-locking feeding machine chain and then enters the rotary kiln.

Description

Technical Field

[0001] The utility model relates to the field of carbonate powders, in particular to suspension preheating equipment used for calcining carbonate powders. Background Art

[0002] Carbonates are salts formed by the combination of metal cations and carbonate ions. There are about ninety-five species of carbonate minerals, and many of them are important non-metallic mineral raw materials.

[0003] Carbonates will be preheated before calcination. When the carbonates are preheated again, they will pile up together, causing the temperature of the carbonates on the outside to reach a certain temperature while the carbonates on the inside have not yet reached the appropriate temperature, resulting in poor carbonate preheating effect and a longer preheating time.

[0004] Therefore, it is necessary to provide a suspension preheating equipment for carbonate powder calcination to solve the above technical problems. Utility Model Content

[0005] The utility model provides a suspension preheating device for calcining carbonate powder, which solves the problem that the existing carbonates are piled up during preheating, resulting in poor preheating effect and long preheating time.

[0006] In order to solve the above technical problems, the utility model provides a suspension preheating equipment for calcining carbonate powder, comprising:

[0007] A frame, one side of which is provided with a material conveying pipe;

[0008] A dust collector is arranged on the top of the frame, a first high-temperature cyclone is arranged on the top of the dust collector, a hoist is arranged on one side of the first high-temperature cyclone, a second high-temperature cyclone is arranged at one end of the hoist, an impeller-locking air feeder chain is arranged at one end of the second high-temperature cyclone, and a conveying pipe is arranged at one end of the impeller-locking air feeder chain.

[0009] Preferably, both ends of the feed pipe are fixedly connected with connecting sleeves, and the connecting sleeves are made of rubber material.

[0010] Preferably, a vibration motor is fixedly installed at the bottom of the material conveying pipe, and four reset rods are fixedly connected to the bottom of the material conveying pipe.

[0011] Preferably, the surfaces of the four reset rods are each provided with a reset sleeve, and the interiors of the four reset sleeves are each provided with a reset groove.

[0012] Preferably, the tops of the four reset rods are respectively fixedly connected to the four corners of the bottom of the feed pipe, and are respectively slidably connected to the insides of the four reset grooves.

[0013] Preferably, the bottom of the reset sleeve is fixedly connected to a support frame, and the bottoms of the four reset sleeves are respectively located at four corners of the top of the support frame.

[0014] Preferably, the four reset grooves are each provided with a reset spring inside, and the four reset springs are respectively provided at one end of the four reset rods.

[0015] Compared with the related art, the suspension preheating equipment for carbonate powder calcination provided by the utility model has the following beneficial effects:

[0016] The utility model provides a suspension preheating equipment for calcining carbonate powder. Through the gas pipelines of a first high-temperature cyclone and a second high-temperature cyclone, the carbonate powder entering is evenly dispersed in the high-temperature airflow, heat exchange is performed in a suspended state, and then the first high-temperature cyclone is driven by the hot air, rotates in the first high-temperature cyclone, and centrifugal force is generated. The raw powder is separated from the flue gas under the action of the center of gravity and gravity, settles and then falls into the airflow pipeline between the equipment, and is suspended again for secondary heat exchange with the flue gas. Finally, the material is separated from the hot exhaust gas, and is fed into the interior of the conveying pipe by an impeller lock air feeder chain and then enters the rotary kiln. Because the device has a simple structure, reliable operation, and prevents blockage, the operation rate is relatively high, and the powder material is evenly dispersed in the high-temperature gas for even and rapid heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a first embodiment of a suspension preheating device for calcining carbonate powder provided by the utility model;

[0018] Figure 2 A schematic structural diagram of a second embodiment of a suspension preheating device for calcining carbonate powder provided by the utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure of the support frame shown;

[0020] Figure 4 for Figure 2 An enlarged schematic diagram of part A is shown.

[0021] Numbers in the figure: 1. dust collector, 2. elevator, 3. first high-temperature cyclone, 4. second high-temperature cyclone, 5. impeller lock wind feeder chain, 6. conveying pipe, 7. conveying pipe, 8. frame, 9. connecting sleeve, 10. reset rod, 11. reset sleeve, 12. reset groove, 13. reset spring, 14. support frame, 15. vibration motor. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes. Example

[0023] Please refer to Figure 1 ,in, Figure 1 The present invention provides a structural schematic diagram of a first embodiment of a suspension preheating device for calcining carbonate powder. A suspension preheating device for calcining carbonate powder includes:

[0024] A frame 8, one side of which is provided with a material conveying pipe 7;

[0025] A dust collector 1 is arranged on the top of the frame 8, and a first high-temperature cyclone 3 is arranged on the top of the dust collector 1, a hoist 2 is arranged on one side of the first high-temperature cyclone 3, a second high-temperature cyclone 4 is arranged at one end of the hoist 2, an impeller-locking air feeder chain 5 is arranged at one end of the second high-temperature cyclone 4, and a conveying pipe 6 is arranged at one end of the impeller-locking air feeder chain 5.

[0026] The dust collector 1 is an air box type pulse bag dust collector, and the elevator 2 is a chain plate bucket elevator.

[0027] Plate bucket elevator 2, first high-temperature cyclone 3, heat exchange pipeline, dust collector 1, impeller lock air feeder chain 5, valve group, rotary kiln and the heat-resistant, wear-resistant, fire-resistant, heat-insulating materials, automatic control, environmental protection technology, etc.

[0028] The exhaust gas from the rotary kiln enters the equipment from the tail of the kiln, passes through the pulse speed change of each bowl chamber, and enters the cyclone dust collector 1 from the top, while the raw material powder is added from the air duct on the top of the equipment, enters the first high-temperature cyclone 3 with the air flow, and is captured and sent to the equipment after undergoing preliminary co-current heat exchange. It is dispersed, gathered, and circulated back and forth in each bowl chamber of the vertical cylinder from top to bottom in a suspended and aggregated state, presenting a complex movement. After gas-solid heat exchange, it enters the kiln from the bottom of the equipment for optimization.

[0029] The powder is dispersed by the rising airflow from the outlet pipe of the vertical tube, and enters the first high-temperature cyclone tube 3 with the airflow. After separation from the airflow, the airflow in the equipment rotates upward from the top, while the powder lags behind the airflow. Under the "cyclone effect" and gravity, it rotates downward and exchanges heat with the airflow in the opposite direction, which is a typical reverse convection heat exchange. The powder gradually moves toward the wall of the tube during the downward rotation and is enriched in the stagnant layer of the tube wall. When the powder concentration in the stagnant layer exceeds the airflow carrying capacity at that location, interference sedimentation occurs and is fed into the rotary kiln through the feed pipe 7 at the bottom of the vertical tube.

[0030] The working principle of the suspension preheating equipment for calcining carbonate powder provided by the utility model is as follows:

[0031] When in use, the carbonate powder entering is evenly dispersed in the high-temperature airflow through the gas pipelines of the first high-temperature cyclone 3 and the second high-temperature cyclone 4, and heat exchange is carried out in a suspended state. The first high-temperature cyclone 3 is then driven by the hot air, and rotates inside the first high-temperature cyclone 3 to generate centrifugal force. The raw powder is separated from the flue gas under the action of the center of gravity and gravity, settles and then falls into the airflow pipeline between the equipment, and is suspended again for secondary heat exchange with the flue gas. Finally, the material is separated from the hot exhaust gas, and is fed into the interior of the conveying pipe 6 by the impeller lock air feeder chain 5 and then enters the rotary kiln.

[0032] Compared with the related art, the suspension preheating equipment for carbonate powder calcination provided by the utility model has the following beneficial effects:

[0033] The utility model provides a suspension preheating equipment for calcining carbonate powder. Through the gas pipelines of the first high-temperature cyclone 3 and the second high-temperature cyclone 4, the carbonate powder entering is evenly dispersed in the high-temperature airflow, heat exchange is performed in a suspended state, and then the first high-temperature cyclone 3 is driven by the hot air, rotates in the first high-temperature cyclone 3, and centrifugal force is generated. The raw powder is separated from the flue gas under the action of the center of gravity and gravity, settles and then falls into the airflow pipeline between the equipment, and is suspended again for secondary heat exchange with the flue gas. Finally, the material is separated from the hot exhaust gas, and is fed into the interior of the conveying pipe 6 by the impeller lock air feeder chain 5 and then enters the rotary kiln. Because the device has a simple structure, reliable operation, and prevents blockage, the operation rate is relatively high, and the powder material is evenly dispersed in the high-temperature gas for even and rapid heating.

[0034] Second embodiment

[0035] Please refer to Figure 2 , Figure 3 and Figure 4 Based on the suspension preheating equipment for carbonate powder calcination provided in the first embodiment of the present application, the second embodiment of the present application proposes another suspension preheating equipment for carbonate powder calcination. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0036] Specifically, the difference of the suspended preheating equipment for calcining carbonate powder provided in the second embodiment of the present application is that, in the suspended preheating equipment for calcining carbonate powder, both ends of the feed pipe 7 are fixedly connected with connecting sleeves 9, and the connecting sleeves 9 are made of rubber material.

[0037] The two connecting sleeves 9 are used to connect with other equipment, so that when the conveying pipe 7 moves up and down, the two connecting sleeves 9 can be bent and deformed.

[0038] A vibration motor 15 is fixedly installed at the bottom of the material conveying pipe 7 , and four reset rods 10 are fixedly connected to the bottom of the material conveying pipe 7 .

[0039] A reset sleeve 11 is disposed on the surface of the four reset rods 10 , and a reset groove 12 is formed inside the four reset sleeves 11 .

[0040] The tops of the four reset rods 10 are respectively fixedly connected to the four corners of the bottom of the feeding pipe 7 , and are respectively slidably connected to the insides of the four reset grooves 12 .

[0041] The bottom of the reset sleeve 11 is fixedly connected to a support frame 14 , and the bottoms of the four reset sleeves 11 are respectively located at the four corners of the top of the support frame 14 .

[0042] A return spring 13 is disposed inside each of the four return grooves 12 , and the four return springs 13 are disposed at one end of each of the four return rods 10 .

[0043] The working principle of the suspension preheating equipment for calcining carbonate powder provided by the utility model is as follows:

[0044] When in use, the vibration motor 15 is started to drive the conveying pipe 7 to vibrate. When the conveying pipe 7 moves downward, the four reset rods 10 are driven to move up and down in the four reset grooves 12 respectively, and the four reset springs 13 are squeezed. When the conveying pipe 7 moves upward, the four reset springs 13 push the four reset rods 10 to move upward in the four reset grooves 12 respectively, so that the conveying pipe 7 moves upward and resets to generate vibration, so that the carbonate powder attached to the inner wall surface of the conveying pipe 7 is shaken off.

[0045] Compared with the related art, the suspension preheating equipment for carbonate powder calcination provided by the utility model has the following beneficial effects:

[0046] The utility model provides a suspension preheating equipment for calcining carbonate powder. The vibration motor 15 cooperates with the reset rod 11, the reset groove 12 and the reset spring 13 to make the feeding pipe 7 vibrate, so that the carbonate powder attached to the inner wall surface of the feeding pipe 7 is shaken off, thereby reducing the waste of carbonate powder being shaken off.

[0047] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A suspension preheating equipment for calcining carbonate powder, characterized in that: include: A frame, one side of which is provided with a material conveying pipe; A dust collector is arranged on the top of the frame, a first high-temperature cyclone is arranged on the top of the dust collector, a hoist is arranged on one side of the first high-temperature cyclone, a second high-temperature cyclone is arranged at one end of the hoist, an impeller-locking air feeder chain is arranged at one end of the second high-temperature cyclone, and a conveying pipe is arranged at one end of the impeller-locking air feeder chain.

2. The suspension preheating equipment for calcining carbonate powder according to claim 1, characterized in that: Both ends of the conveying pipe are fixedly connected with connecting sleeves, and the connecting sleeves are made of rubber material.

3. The suspension preheating equipment for calcining carbonate powder according to claim 2, characterized in that: A vibration motor is fixedly installed at the bottom of the material conveying pipe, and four reset rods are fixedly connected to the bottom of the material conveying pipe.

4. The suspension preheating equipment for calcining carbonate powder according to claim 3, characterized in that: The surfaces of the four reset rods are all provided with reset sleeves, and the interiors of the four reset sleeves are all provided with reset grooves.

5. The suspension preheating equipment for calcining carbonate powder according to claim 4, characterized in that: The tops of the four reset rods are respectively fixedly connected to the four corners of the bottom of the feeding pipe, and are respectively slidably connected to the insides of the four reset grooves.

6. The suspension preheating equipment for calcining carbonate powder according to claim 4, characterized in that: The bottom of the reset sleeve is fixedly connected to a support frame, and the bottoms of the four reset sleeves are respectively located at the four corners of the top of the support frame.

7. The suspension preheating equipment for calcining carbonate powder according to claim 4, characterized in that: The four reset grooves are each provided with a reset spring, and the four reset springs are respectively provided at one end of the four reset rods.

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