Aged phosphogypsum crushing device and system thereof

Abstract

The utility model provides an aged phosphogypsum crushing device and a system thereof. The aged phosphogypsum crushing device comprises a pretreatment mechanism, a crushing mechanism and a screening mechanism which are sequentially arranged from top to bottom, the pretreatment mechanism comprises a first shell and a crushing mixer, and a modified dryer inlet and a grinding aid inlet are formed in the first shell; the crushing mechanism comprises a second shell and a crusher located in the second shell. The screening mechanism comprises a third shell communicating with the second shell and a screen detachably installed in the third shell. According to the aged ardealite crushing device, the modified dryer inlet and the grinding aid inlet are formed in the first shell to add a modified dryer and a grinding aid into aged ardealite in the shell, so that the state of raw materials is changed and effectively improved, and primary crushing is carried out in cooperation with the crushing mixer, so that material discharging is smoother, blockage is not likely to happen, and the working efficiency is improved. And the subsequent crushing efficiency is higher, and the crushed particle size is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing devices, in particular to an aged phosphogypsum crushing device and a system thereof. Background Art

[0002] The existing phosphogypsum crushing equipment does not take into account the complexity of phosphogypsum raw materials during the crushing process, and is not suitable for the original aged phosphogypsum, because the aged phosphogypsum contains water, which is easy to cause problems such as aggregation and blockage during the crushing process. At the same time, due to the different degrees of compaction and hardening of phosphogypsum raw materials, it is easy to cause different outlet particle sizes, which is not conducive to subsequent use.

[0003] Patent CN207222067U discloses a phosphogypsum crushing device, which crushes the phosphogypsum by setting a crushing groove, and setting two sets of rotating blades in the crushing groove. The two sets of blades are staggered and meshed during the rotation process. This device does not take into account the problem of different water content and hardening degree of aged phosphogypsum, which is very likely to cause problems such as difficulty in gathering and unloading, and low production efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide an aged phosphogypsum crushing device and a system thereof, aiming to solve the problem of aggregation and blockage easily caused during the crushing process due to the aged phosphogypsum containing water.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an aged phosphogypsum crushing device, comprising a pretreatment mechanism, a crushing mechanism and a screening mechanism arranged in sequence from top to bottom, wherein:

[0006] The pretreatment mechanism includes a first shell and a crusher and agitator located inside the first shell. The first shell is provided with a modified dryer inlet and a grinding aid inlet so as to add the modified dryer and the grinding aid into the aged phosphogypsum inside the first shell; the crushing mechanism includes a second shell and a crusher located inside the second shell; the screening mechanism includes a third shell connected to the second shell and a screen detachably installed inside the third shell.

[0007] Preferably, a first-stage unloading baffle that can be opened and closed is installed between the first shell and the second shell, and a second-stage unloading baffle that can be opened and closed is installed between the second shell and the third shell.

[0008] Preferably, the crusher-mixer is a paddle-type crusher-mixer; the crusher is a vertical hammer crusher, and a main shaft is arranged in the middle of the vertical hammer crusher to be connected with a driving mechanism.

[0009] Preferably, the crushing mixer and the crusher share a driving mechanism to drive them to rotate.

[0010] Preferably, the aged phosphogypsum crushing device further comprises a buffer mechanism located above the pretreatment mechanism, and the buffer mechanism comprises a feed hopper and a pressure reducing plate installed inside the feed hopper for assisting material discharge.

[0011] Preferably, the pressure relief plate is arranged obliquely in the feed hopper.

[0012] Preferably, the feed hopper is connected to a first vibrating device, and the screen is connected to a second vibrating device.

[0013] Preferably, it is characterized in that the first shell, the second shell and the third shell are integrally formed, the lower part of the third shell is its finished product discharge port, the side of the third shell is provided with a screened material collection port, the screened material collection port is located above the screen, and the screen is inclined.

[0014] The utility model also provides an aged phosphogypsum crushing system, which is characterized by comprising the aged phosphogypsum crushing device mentioned above and also comprising a feeding device for feeding the aged phosphogypsum crushing device.

[0015] Preferably, the feeding device includes a screw feeder, the outlet of the screw feeder is connected to the inlet of the aged phosphogypsum crushing device through a pipeline, a collecting hopper is placed at the inlet of the screw feeder, and the collecting hopper is connected to the screen material collection port of the aged phosphogypsum crushing device.

[0016] The aged phosphogypsum crushing device proposed in the utility model is provided with a modified dryer inlet and a grinding aid inlet on the first shell to add the modified dryer and the grinding aid into the aged phosphogypsum inside the shell, thereby effectively changing and improving the raw material state, and then cooperating with a crushing mixer for primary crushing, so that the material discharge is smoother and less prone to blockage, the subsequent crushing efficiency is higher, and the crushing particle size is smaller. Furthermore, a screen is provided to make the outlet particle size uniform, and because the screen is detachable, the particle size of the screening area can be adjusted according to demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of the aged phosphogypsum crushing device of the utility model.

[0018] In the figure, 1. feeding port, 2. first vibration device, 3. pressure relief plate, 4. modified dryer inlet, 5. grinding aid inlet, 6. crushing mixer, 7. frequency conversion motor, 8. primary discharge baffle, 9. crusher, 10. secondary discharge baffle, 11. screen, 12. second vibration device, 13. screen collecting port, 14. finished product discharge port, 15. screw feeder inlet, 16. screw feeder.

[0019] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] The utility model provides an aged phosphogypsum crushing device.

[0023] Reference Figure 1 In this preferred embodiment, an aged phosphogypsum crushing device includes a pretreatment mechanism, a crushing mechanism and a screening mechanism arranged in sequence from top to bottom, wherein:

[0024] The pretreatment mechanism includes a first shell and a crusher and mixer 6 located inside the first shell. The first shell is provided with a modified dryer inlet 4 and a grinding aid inlet 5 for adding the modified dryer and the grinding aid into the aged phosphogypsum inside the first shell; the crushing mechanism includes a second shell and a crusher 9 located inside the second shell; the screening mechanism includes a third shell connected to the second shell and a screen 11 detachably installed inside the third shell.

[0025] The screen 11 can be detachably installed inside the third shell, so that the screens 11 with different particle sizes can be easily replaced according to different raw materials. The aged phosphogypsum crushing device is a vertical structure.

[0026] The grinding aid can be one of steel slag, slag, quartz sand, etc. The modified desiccant is calcium oxide, and the addition amount is 0.5%~2%, which can adjust the pH of the aged phosphogypsum to about 6. The main purpose of the crushing mixer 6 in the pretreatment mechanism is to break up and crush the compacted phosphogypsum, and at the same time evenly mix it with the grinding aid and the modified desiccant. After stirring for 30s~60s, it enters the crushing mechanism for high-speed stirring.

[0027] The screen 11 is tilted, and the aperture of the screen 11 can be adjusted between 1.18 mm and 9.5 mm. Specifically, the type of phosphogypsum raw material and related boundary parameters are limited: aged phosphogypsum, inlet moisture content ≤12%, pH around 4-6. This makes the treatment device more targeted, better adapted, and more efficient. When the moisture content is higher than 12%, it is first naturally dried to a moisture content of ≤12%, and then enters the aged phosphogypsum crushing device.

[0028] Furthermore, a primary unloading baffle 8 that can be opened and closed is installed between the first shell and the second shell, and a secondary unloading baffle 10 that can be opened and closed is installed between the second shell and the third shell. The primary unloading baffle 8 and the secondary unloading baffle 10 are driven to open or close by corresponding motors, thereby opening or closing the communication channel between the first shell, the second shell and the third shell.

[0029] Specifically, in this embodiment, the crusher mixer 6 is a paddle-type crusher mixer; the crusher 9 is a vertical hammer crusher, a main shaft is arranged in the middle of the vertical hammer crusher to connect with the driving mechanism, and in order to prevent the incoming material from aggregating, a layer of hammer heads is arranged every 4cm~6cm, and the raw materials are crushed by the shear force of the high-speed rotation of the vertical hammer crusher. The stirring time is 60s~120s, and the crushed raw materials enter the screening mechanism for further screening.

[0030] In this embodiment, it is preferred that the crushing mixer 6 and the crusher 9 share a driving mechanism to drive them to rotate, thereby reducing one driving mechanism. The driving mechanism can be a variable frequency motor 7 installed above the first housing.

[0031] Furthermore, the aged phosphogypsum crushing device further comprises a buffer mechanism located above the pretreatment mechanism, the buffer mechanism comprising a feed hopper and a pressure relief plate 3 installed inside the feed hopper for assisting in unloading, the pressure relief plate 3 being arranged obliquely inside the feed port. The feed port 1 is located above the feed hopper.

[0032] In this embodiment, the pressure reducing plate 3 is arranged obliquely in the feed hopper. Figure 1 Two pressure relief plates 3 are provided, which are located on the left and right sides of the motor output shaft respectively. The pressure relief plate 3 is a flat plate structure, because compared with the case where the pressure relief plate 3 is not provided, the inclined setting at this time increases the force bearing area, thereby reducing the pressure on the incoming materials, thereby assisting in unloading the materials, and allowing the incoming materials to enter the next link in an orderly manner. When the pressure relief plate 3 is not provided, the materials are easy to aggregate when there are a lot of materials.

[0033] Furthermore, the feed hopper is connected to a first vibrating device 2 to drive the entire feed hopper to vibrate, thereby assisting in feeding, and the screen 11 is connected to a second vibrating device 12 to improve screening efficiency.

[0034] Specifically, in this embodiment, the first shell, the second shell and the third shell are integrally formed, the lower part of the third shell is a finished product discharge port 14, and the side of the third shell is provided with a screened material collection port 13, which is located above the screen 11.

[0035] The working process of this aged phosphogypsum crushing device is as follows:

[0036] After the aged phosphogypsum enters through the feed port 1 of the feed hopper, the raw material is diffused and discharged to the surroundings through the pressure reducing plate 3. During the discharge process, the first vibration device 2 is turned on to facilitate smooth discharge without aggregation. Then the raw material enters the pretreatment mechanism, and the modified dryer and grinding aid are added thereto through the modified dryer inlet 4 and the grinding aid inlet 5 respectively, and the paddle-type crushing and mixing device is used for stirring and crushing, thereby completing the modification, drying, primary crushing and mixing of the raw material. After pretreatment, the raw material enters the crushing mechanism through the primary discharge baffle 8 to complete the secondary crushing, and the device is also driven by the frequency conversion motor 7. The crushed raw material enters the screening mechanism through the secondary discharge baffle 10. After the raw material passes through the screen 11, the screened material enters the inlet of the screw feeder 16 through the screened material collection port 13, and returns to the feed port 1 through the screw feeder 16 for re-crushing. The screened material is collected and used for standby through the finished product discharge port 14.

[0037] The aged phosphogypsum crushing device proposed in the utility model is provided with a modified dryer inlet 4 and a grinding aid inlet 5 on the first shell to add the modified dryer and the grinding aid to the aged phosphogypsum inside the shell, thereby effectively changing and improving the state of the raw materials, and then cooperating with the crushing mixer 6 for primary crushing, so that the material feeding is smoother and not easy to be blocked, the subsequent crushing efficiency is higher, and the crushing particle size is smaller. Furthermore, the screen 11 is provided to make the outlet particle size uniform, and because the screen 11 is detachable, the particle size of the screening area can be adjusted according to the demand.

[0038] The utility model further provides an aged phosphogypsum crushing system.

[0039] In this preferred embodiment, an aged phosphogypsum crushing system includes the aged phosphogypsum crushing device described above, and also includes a feeding device for feeding the aged phosphogypsum crushing device. The specific structure and beneficial effects of the aged phosphogypsum crushing device refer to the above embodiment and will not be repeated here.

[0040] Specifically, in this embodiment, the feeding device includes a screw feeder 16, the outlet of the screw feeder 16 is connected to the inlet of the aged phosphogypsum crushing device through a pipeline, and a collecting hopper is placed at the inlet of the screw feeder 16, and the collecting hopper is connected to the screened material collection port 13 of the aged phosphogypsum crushing device. The screened material flows back to the feeding port 1 through the screw conveyor, thereby improving the utilization rate of the raw materials.

[0041] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made 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. An aged phosphogypsum crushing device, characterized in that: It includes a pre-treatment mechanism, a crushing mechanism and a screening mechanism arranged in sequence from top to bottom, wherein: The pretreatment mechanism includes a first shell and a crusher and agitator located inside the first shell. The first shell is provided with a modified dryer inlet and a grinding aid inlet so as to add the modified dryer and the grinding aid into the aged phosphogypsum inside the first shell; the crushing mechanism includes a second shell and a crusher located inside the second shell; the screening mechanism includes a third shell connected to the second shell and a screen detachably installed inside the third shell.

2. The aged phosphogypsum crushing device according to claim 1, characterized in that: A first-stage unloading baffle that can be opened and closed is installed between the first shell and the second shell, and a second-stage unloading baffle that can be opened and closed is installed between the second shell and the third shell.

3. The aged phosphogypsum crushing device according to claim 1, characterized in that: The crushing and mixing device is a paddle-type crushing and mixing device; the crusher is a vertical hammer crusher, and a main shaft is arranged in the middle of the vertical hammer crusher to be connected with a driving mechanism.

4. The aged phosphogypsum crushing device according to claim 1, characterized in that: The crushing mixer and the crusher share a driving mechanism to drive them to rotate.

5. The aged phosphogypsum crushing device according to claim 1, characterized in that: It also includes a buffer mechanism located above the pretreatment mechanism, and the buffer mechanism includes a feed hopper and a pressure relief plate installed inside the feed hopper for assisting material discharge.

6. The aged phosphogypsum crushing device according to claim 5, characterized in that: The pressure reducing plate is arranged obliquely in the feed hopper.

7. The aged phosphogypsum crushing device according to claim 5, characterized in that: The feed hopper is connected to a first vibrating device, and the screen is connected to a second vibrating device.

8. The aged phosphogypsum crushing device according to any one of claims 1 to 7, characterized in that: The first shell, the second shell and the third shell are integrally formed, the lower part of the third shell is a finished product discharge port, the side of the third shell is provided with a screened material collection port, the screened material collection port is located above the screen, and the screen is inclined.

9. An aged phosphogypsum crushing system, characterized in that: It comprises the aged phosphogypsum crushing device as described in any one of claims 1 to 8, and also comprises a feeding device for feeding the aged phosphogypsum crushing device.

10. The aged phosphogypsum crushing system according to claim 9, characterized in that: The feeding device comprises a screw feeder, the outlet of the screw feeder is connected to the inlet of the aged phosphogypsum crushing device through a pipeline, a collecting hopper is placed at the inlet of the screw feeder, and the collecting hopper is connected to the screen material collecting port of the aged phosphogypsum crushing device.

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