Device suitable for calcining and mixing rare earth praseodymium neodymium oxide in industry

Abstract

The utility model belongs to the field of rare earth or non-ferrous metal smelting separation devices, and particularly relates to a device suitable for calcining and mixing rare earth praseodymium neodymium oxide in industry. The device comprises a rare earth praseodymium neodymium oxide calcining device and a rare earth praseodymium neodymium oxide mixing device, the rare earth praseodymium neodymium oxide calcining device comprises a stock bin (1), a sagger (3), a roller kiln (5) and a screening machine (8), the stock bin (1) is connected with the sagger (3) through the spiral blanking automatic filling device (2); the saggar (3) is connected with the roller kiln (5) through the roller platform (4); a dust collector (6) is arranged at the outlet end of the roller kiln (5) and connected with a dust collecting bin (7). The device is matched with the dust collection device, so that on-site dust is reduced, the loss of praseodymium and neodymium oxide is avoided, the working environment is improved, the labor intensity of operators is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of rare earth or non-ferrous metal smelting and separation equipment, specifically a device suitable for industrial calcination and mixing of rare earth praseodymium and neodymium oxide. Background Technology

[0002] Currently, in industry, praseodymium chloride solution is carbonized using sodium carbonate to obtain praseodymium carbonate, which is then calcined at 1040℃ for 24 hours to obtain praseodymium oxide. The calcined praseodymium oxide is then transported to a mixer for mixing to obtain praseodymium oxide that meets sales standards (praseodymium content is (25±2)%), and finally packaged to obtain the marketable product, praseodymium oxide.

[0003] The above-mentioned equipment has the following problems: too much reliance on manual labor, high labor intensity for employees, and cumbersome processes. (Employees manually fill individual saggers (approximately 15kg each), place them on rollers, and push them into a roller kiln for calcination. After calcination, the calcined praseodymium oxide is manually unloaded from the saggers into a screening machine. The screened praseodymium oxide is then manually bagged and transported to a mixing machine using a hydraulic trolley. It is then manually fed into the mixing silo. Finally, the mixed praseodymium oxide is manually bagged again to obtain marketable praseodymium oxide product. The entire process uses 50kg woven bags for bagging, resulting in low bag recycling rates and cost losses. Furthermore, during manual operation, the fine and easily scattered solid powder of praseodymium oxide leads to some loss.)

[0004] Therefore, we need to improve the equipment on site. Utility Model Content

[0005] The purpose of this invention is to solve at least one of the problems existing in the prior art and to provide an apparatus suitable for the industrial calcination and mixing of rare earth praseodymium and neodymium oxide. This apparatus only requires manual bagging once after material screening; the rest of the process utilizes equipment modification and linkage to replace manual labor. Furthermore, this application improves the apparatus and includes a dust collection device to prevent the loss of praseodymium and neodymium oxide.

[0006] To achieve the above-mentioned objectives, the specific technical solution of this utility model is as follows:

[0007] An apparatus for industrial calcination and mixing of rare earth praseodymium-neodymium oxide includes a calcination device and a mixing device. The calcination device comprises a silo, a sagger, a roller kiln, and a screening machine. The silo is connected to the sagger via an automatic screw-feeding filling device. The sagger is connected to the roller kiln via a roller platform. A dust collector is installed at the outlet of the roller kiln and connected to a dust collection bin. The dust collection bin is connected to the screening machine. The mixing device includes a feeding trough, a screw conveyor, and a mixing bin. The screening machine is connected to the feeding trough, which is connected to the mixing bin via the screw conveyor.

[0008] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of praseodymium and neodymium oxide rare earths, a bagging device or manual bagging is installed after the screening machine to facilitate storage or transportation.

[0009] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of praseodymium and neodymium oxide rare earths, the bagging equipment transports the material to the feeding trough position via a hydraulic trolley.

[0010] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of praseodymium and neodymium oxides, a suction collector is installed above the feeding trough.

[0011] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of praseodymium and neodymium oxide rare earths, a 60-degree inclined baffle is installed inside the hopper to allow the powder to slide down more smoothly; a spiral outlet is installed at the bottom of the hopper.

[0012] Furthermore, in the aforementioned apparatus for the industrial calcination and mixing of praseodymium and neodymium oxide rare earths, a roller platform is installed at the screw outlet. The material enters the crucible through the screw and is directly pushed to the roller kiln (electric roller kiln). The use of the roller in the electric roller kiln optimizes the original steps of manually filling the crucible and carrying the crucible to the roller.

[0013] Furthermore, the automatic screw feeding and filling device, sagger, drum platform, and roller kiln are all connected to the control device to achieve automated operation and reduce manual labor. The connection of the automatic screw feeding and filling device, sagger, drum platform, and roller kiln to the control device can be achieved through existing technology.

[0014] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of rare earth praseodymium and neodymium oxides, a spiral is added to the bottom of the mixing silo. The inlet of the spiral is connected to the outlet of the mixing silo (mixer), and the connection is sealed with a cloth bag. A ton bag is installed at the spiral outlet.

[0015] Furthermore, in the aforementioned apparatus suitable for industrial calcination and mixing of praseodymium and neodymium oxide rare earths, the height of the spiral outlet is preferably 15 cm higher than the height of the ton bag.

[0016] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of praseodymium-neodymium oxide, the length of the spiral is preferably 4 meters.

[0017] Furthermore, in the aforementioned device for industrial calcination and mixing of praseodymium and neodymium oxide rare earth, after the ton bag is weighed by an electronic scale placed at the bottom, it can be moved away from the site.

[0018] Compared with existing technologies, the beneficial effects of this utility model are:

[0019] (1) This utility model only requires manual bagging once after screening. The rest of the process is completed by modifying and linking the equipment to replace manual labor. The entire device operates almost entirely in a closed environment and is equipped with a dust collection device to avoid the loss of praseodymium and neodymium oxide.

[0020] (2) This utility model reduces on-site dust, improves the working environment, reduces the labor intensity of operators, and improves work efficiency.

[0021] (3) Mixed praseodymium and neodymium are packaged in ton bags instead of woven bags. At the same time, the cost of recycling ton bags is saved. Each ton bag is reused 4 times. In the second half of 2022, 410 tons of mixed praseodymium and neodymium were produced. Theoretically, 410 ton bags were used, but the actual consumption of ton bags was 102. The production cost decreased by: 2.19 yuan / bag (the price of woven bags) * 410 tons * 20 (20 bags per ton) - 56.7 yuan / bag (the price of ton bags) * 102 = 12,200 yuan. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection relationship of an industrial device for calcining and mixing rare earth praseodymium and neodymium oxides.

[0023] Among them, 1—hopper, 2—screw feeding automatic filling device, 3—sagger, 4—roller platform, 5—roller kiln, 6—dust collector, 7—dust collection bin, 8—screening machine, 9—bag filling equipment, 10—hydraulic trolley, 11—feeding trough, 12—screw conveyor, 13—mixing bin, 14—collector, 15—screw, 16—ton bag, 17—electronic scale. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to examples. It should be understood that the specific examples described herein are merely illustrative and not intended to limit the scope of this utility model. Furthermore, it should be understood that after reading this utility model, those skilled in the art can make various alterations and modifications, but these equivalent forms also fall within the scope defined by the appended claims.

[0025] Example 1:

[0026] An apparatus for industrial calcination and mixing of rare earth praseodymium and neodymium oxides includes a rare earth praseodymium and neodymium oxide calcination apparatus and a rare earth praseodymium and neodymium oxide mixing apparatus; the rare earth praseodymium and neodymium oxide calcination apparatus and the rare earth praseodymium and neodymium oxide mixing apparatus can be operated continuously or separately.

[0027] The rare earth praseodymium-neodymium oxide calcination device includes a silo 1, a sagger 3, a roller kiln 5, and a screening machine 8. The silo 1 is connected to the sagger 3 via a screw feeder and automatic filling device 2. The sagger 3 is connected to the roller kiln 5 via a roller platform 4. A dust collector 6 is installed at the outlet end of the roller kiln 5 and is connected to a dust collection bin 7. The dust collection bin 7 is connected to the screening machine 8. The rare earth praseodymium-neodymium oxide mixing device includes a feeding trough 11, a screw conveyor 12, and a mixing bin 13. The screening machine 8 is connected to the feeding trough 11, and the feeding trough 11 is connected to the mixing bin 13 via the screw conveyor 12.

[0028] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of rare earth praseodymium-neodymium oxide, a bagging device 9 or manual bagging is installed after the screening machine 8.

[0029] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of rare earth praseodymium-neodymium oxide, a suction collector 14 is installed above the feeding tank 11.

[0030] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of rare earth praseodymium and neodymium oxides, the bagging device 9 transports the material to the feeding trough 11 via a hydraulic trolley 10.

[0031] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of praseodymium and neodymium oxide rare earths, a baffle inclined at 60 degrees is installed inside the hopper 1 to allow the powder to slide down more smoothly; a spiral outlet is installed at the bottom of the hopper 1.

[0032] Furthermore, in the aforementioned apparatus for the industrial calcination and mixing of praseodymium and neodymium oxide rare earths, a roller platform 4 is installed at the screw outlet. The material enters the crucible through the screw and is directly pushed to the roller kiln (electric roller kiln) 5. The installation of the roller in the electric roller kiln optimizes the original steps of manually filling the crucible and carrying the crucible to the roller.

[0033] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of rare earth praseodymium and neodymium oxide, a spiral 15 is added to the bottom of the mixing hopper 13. The inlet of the spiral is connected to the outlet of the mixing machine in the mixing hopper 13, and the connection is sealed with a cloth bag. A ton bag 16 is provided at the spiral outlet.

[0034] Furthermore, in the aforementioned apparatus suitable for industrial calcination and mixing of praseodymium and neodymium oxide rare earths, the height of the spiral outlet is preferably 15 cm higher than the height of the ton bag 16.

[0035] Furthermore, in the aforementioned apparatus for industrial calcination and mixing of praseodymium-neodymium oxide, the length of the spiral 15 is preferably 4 meters.

[0036] Furthermore, in the aforementioned device for industrial calcination and mixing of praseodymium and neodymium oxide, after the electronic scale 17 placed at the bottom of the ton bag 16 has finished weighing, it can be moved away from the site.

[0037] The entire calcination process using this device is as follows:

[0038] Rare earth praseodymium-neodymium oxide calcination raw material is placed in silo 1. A 60-degree inclined baffle installed inside silo 1 facilitates smoother powder descent. A spiral outlet is installed at the bottom of silo 1. A roller platform 4 is installed at the spiral outlet, through which the material enters the crucible and is directly pushed to the roller kiln 5 for calcination. This electric roller kiln roller optimizes the original steps of manually filling the crucible and carrying it to the roller. A dust collector is installed at the end of the roller kiln 5. The calcined material is collected by the dust collector and sent to a dust collection bin. The collected material is then screened by a screening machine, solving the problem of large praseodymium-neodymium oxide particle size affecting mixing. The qualified products obtained from screening are manually or mechanically bagged. The bagged products are then transported by hydraulic trucks and fed into the feeding trough of the rare earth praseodymium-neodymium oxide mixing device. Since the calcined rare earth praseodymium-neodymium oxide is in powder form, a suction collector is installed above the feeding trough to reduce material loss during feeding and to address dust generation. The material in the feeding trough is transported by a screw conveyor to the mixing silo for mixing. A 4-meter-long screw 15 is installed at the bottom of the mixing silo 13. The inlet of this screw connects to the outlet of the mixing machine in the mixing silo 13, and the connection is sealed with a cloth bag. A ton bag 16 is installed at the screw outlet. The height of the screw outlet is 15 cm higher than the height of the ton bag 16. An electronic scale 17 is placed at the bottom of the ton bag 16 for weighing. After weighing, the bag can be removed from the site.

[0039] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

[0040] The background section is provided to generally present the context of this utility model. The work of the currently named inventors, the work to the extent described in this background section, and aspects described in this section that did not constitute prior art at the time of filing are neither expressly nor impliedly acknowledged as prior art to this utility model.

Claims

1. A device suitable for industrial calcination and mixing of praseodymium neodymium oxide, characterized in that: The device comprises a rare earth praseodymium neodymium oxide calcining device and a rare earth praseodymium neodymium oxide mixing device; the rare earth praseodymium neodymium oxide calcining device comprises a stock bin (1), a sagger (3), a roller kiln (5) and a screening machine (8); the stock bin (1) is connected with the sagger (3) through a spiral feeding automatic filling device (2); the sagger (3) is connected with the roller kiln (5) through a roller platform (4); a dust collector (6) is arranged at the outlet end of the roller kiln (5), and the dust collector (6) is connected with a dust collecting bin (7); the dust collecting bin (7) and the screening machine (8) are communicated; the rare earth praseodymium neodymium oxide mixing device comprises a feeding chute (11), a spiral conveyor (12) and a mixing bin (13); the screening machine (8) is connected with the feeding chute (11), and the feeding chute (11) is connected with the spiral conveyor (12) and the mixing bin (13).

2. The device for calcining and mixing Pr6O11 and Nd2O3 according to claim 1, wherein: A bagging device (9) or manual bagging is further arranged behind the screening machine (8).

3. The device for calcining and mixing Pr6O11 and Nd2O3 according to claim 1, wherein: A suction device (14) is arranged above the feeding chute (11).

4. The device for calcining and mixing Pr6O11 and Nd2O3 according to claim 2, characterized in that: The bagging device (9) transports the material to the feeding chute (11) through an oil pressure vehicle (10).

5. The device for calcining and mixing Pr-Nd oxide according to claim 4, characterized in that: An inclined baffle with an inclination of 60 degrees is arranged inside the stock bin (1); a spiral outlet is arranged at the bottom of the stock bin (1).

6. The device for calcining and mixing Pr6O11 and Nd2O3 according to claim 5, characterized in that: A roller platform (4) is arranged on the spiral outlet; the material enters the crucible through the spiral and is directly pushed to the roller kiln (5).

7. The device for calcining and mixing Pr6O11 and Nd2O3 according to claim 6, characterized in that: A spiral (15) is additionally arranged at the bottom of the mixing bin (13); the spiral inlet of the spiral (15) is connected with the outlet of the mixing bin (13); the connecting position is sealed by a cloth bag; a ton bag (16) is arranged at the spiral outlet of the spiral (15).

8. The device for calcining and mixing Pr6O11 and Nd2O3 according to claim 6, characterized in that: The height of the spiral outlet is 15 cm higher than the height of the ton bag (16).

9. The device for calcining and mixing Pr-Nd oxide according to claim 7, characterized in that: The length of the spiral (15) is 4 m.

10. The device for calcining and mixing Pr-Nd oxide according to claim 7, characterized in that: An electronic scale (17) is arranged at the bottom of the ton bag (16).

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