Equipment for producing rare earth metal by lanthanum thermal reduction method

Abstract

The utility model relates to the technical field of rare earth metal production, and discloses equipment for producing rare earth metal by a lanthanum thermal reduction method, which comprises a furnace shell, temperature measuring devices arranged at the top and the bottom of the outer wall of the furnace shell and used for measuring temperature, and a vacuum system arranged at the top of the outer wall of the furnace shell and used for keeping vacuum in the furnace shell, a cooling device for cooling is arranged on the inner wall of the top of the furnace shell; the heating assembly is arranged at the bottom of the inner wall of the furnace shell, a heating body and a crucible are arranged in the heating assembly, and a heat preservation layer used for heat preservation is further arranged in the heating assembly; the collecting assembly is arranged at the top of the crucible, and the collecting assembly internally comprises a collecting barrel and a guiding ring used for guiding; and the anti-overflow assembly is arranged between the collecting barrel and the guide ring, and the anti-overflow assembly internally comprises a fixing ring, a through hole and an anti-overflow groove. Through the arrangement of the through hole and the anti-overflow groove, gas is prevented from falling down from the through hole, and then the gas is prevented from flowing back from the through hole to affect the machining efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of rare earth metal production, in particular to a device for producing rare earth metals by lanthanum thermal reduction method. Background Art

[0002] The lanthanum thermal reduction method is a common method for producing rare earth metals such as samarium, europium, ytterbium, etc. with relatively high vapor pressure. Currently, a carbon tube furnace with graphite as the heating element is mainly used for production.

[0003] After retrieval, the application number "201120213845.0" discloses a device for producing rare earth metals by lanthanum thermal reduction method. There is a conductive seat arranged at the upper part inside the furnace body. The conductive seat is connected with an electrode, and the electrode extends outside the furnace body and is connected with a power supply; the heating element is in a cylindrical shape, and the upper part of the heating element is connected with the conductive seat; a heat preservation cylinder is arranged below the conductive seat and on the outer circumference of the heating element, and a crucible is arranged on the inner circumference of the heating element; a collection barrel is arranged above the crucible, and a cooling device is arranged on the outer circumference of the collection barrel; the furnace body is provided with a temperature measuring device and a vacuum system. The single-furnace output is increased from the ten-kilogram level to the hundred-kilogram level, and the equipment maintenance is simple. When replacing the heating element, it is not necessary to take out the heat preservation cylinder. A single piece of the heating element can be replaced, or the whole heating element can be replaced. The power consumption is 7.78 degrees / kg, which greatly reduces the energy consumption and improves the production efficiency.

[0004] When this technical solution is in use, when the gas on it overflows upward and enters the cooling device, there is no suitable anti-overflow device on it, and the gas is prone to reverse flow when being discharged, affecting the efficiency of gas discharge, and then affecting the efficiency of rare earth metal processing.

[0005] Therefore, we propose a device for producing rare earth metals by lanthanum thermal reduction method. Content of the Utility Model

[0006] The utility model mainly solves the technical problem that the reverse flow of gas affects the processing efficiency during the processing of rare earth metals, and provides a device for producing rare earth metals by lanthanum thermal reduction method.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solution. A device for producing rare earth metals by lanthanum thermal reduction method includes:

[0008] A furnace shell, a temperature measuring device for temperature measurement is arranged at the top and the bottom of the outer wall of the furnace shell, a vacuum system for maintaining the vacuum inside the furnace shell is arranged at the top of the outer wall of the furnace shell, and a cooling device for cooling is arranged on the inner wall at the top of the furnace shell;

[0009] A heating assembly, the heating assembly is arranged at the bottom position of the inner wall of the furnace shell. The heating assembly includes a heating element and a crucible, and a heat preservation layer for heat preservation is also arranged inside the heating assembly;

[0010] The collection component is arranged at the top of the crucible. The collection component includes a collection barrel and a guiding ring for guiding.

[0011] The anti-overflow component is arranged between the collection barrel and the guiding ring. The anti-overflow component includes a fixing ring, a through hole, and an anti-overflow groove.

[0012] Furthermore, the heat preservation layer is fixedly connected to the bottom position of the inner wall of the furnace shell through fixing rods. A columnar groove is formed on the heat preservation layer. The heating element is arranged in the columnar groove through an electric signal. The heating element is annular. The crucible is arranged inside the heating element. A top cover is arranged at the top of the crucible. The collection barrel is fixedly connected to the top of the top cover. And the top of the collection barrel is arranged inside the cooling device.

[0013] Furthermore, the guiding ring surrounds the outer wall of the collection barrel in a ring shape. The bottom end of the guiding ring is fixedly connected to the top of the top cover. The top of the guiding ring is fixedly connected to the inner wall of the cooling device. And a plurality of first exhaust holes arranged in a circumferential pattern are formed on the top of the top cover. The first exhaust holes are arranged between the collection barrel and the guiding ring. Both ends of the cross-section of the first exhaust hole are arc-shaped. The first exhaust hole has a structure that is smaller at the top and larger at the bottom.

[0014] Furthermore, a guiding plate is arranged at the top position of the guiding ring and the collection barrel. The guiding plate is an annular plate with an inclined cross-section. A plurality of second exhaust holes arranged in a circumferential pattern are formed on the guiding plate. Both ends of the cross-section of the second exhaust hole are arc-shaped. And the second exhaust hole has a structure that is smaller at the top and larger at the bottom.

[0015] Furthermore, the fixing ring is fixedly connected in a ring shape between the collection barrel and the guiding ring. A through hole is formed in the fixing ring. The bottom end of the through hole is communicated with the first exhaust hole.

[0016] Furthermore, a plurality of anti-overflow grooves arranged linearly are staggered at both ends of the through hole. The cross-section of the anti-overflow groove is arc-shaped. And both the upper and lower ends of the anti-overflow groove are communicated with the through hole. The cross-sectional area of the bottom end of the anti-overflow groove is smaller than that of the top cross-section area. Beneficial effects

[0017] The present utility model provides a device for producing rare earth metals by the lanthanum thermal reduction method. It has the following beneficial effects:

[0018] (1). For the device for producing rare earth metals by the lanthanum thermal reduction method, through the arranged through hole and anti-overflow groove, when the gas at the bottom enters the through hole through the first exhaust hole, the cross-sectional area of the bottom of the anti-overflow groove is small, thus being able to prevent the gas from entering the anti-overflow groove and can be discharged through the through hole. When the gas drops, at this time, the cross-sectional area of the upper end of the anti-overflow groove is large, thus being able to enter the anti-overflow groove for circulation, preventing the gas from falling through the through hole, and further preventing the gas from flowing back through the through hole, which affects the processing efficiency.

[0019] (2) The equipment for producing rare earth metals by lanthanum thermal reduction method can guide the gas and improve the gas passing efficiency through the design of the arc-shaped cross-section of the first exhaust hole and the second exhaust hole. Moreover, the design with a smaller upper part and a larger lower part can prevent gas backflow and affect the processing efficiency. Brief Description of the Drawings

[0020] Figure 1 is the front view of the present utility model;

[0021] Figure 2 is the sectional view of the present utility model;

[0022] Figure 3 is the present utility model Figure 2 enlarged view of part A;

[0023] Figure 4 is the present utility model Figure 2 enlarged view of part B.

[0024] Legend: 1. Furnace shell; 2. Temperature measuring device; 3. Vacuum system; 4. Heat insulation layer; 5. Heating element; 6. Crucible; 7. Collection barrel; 8. Guide ring; 9. Guide plate; 10. Cooling device; 11. Top cover; 12. First exhaust hole; 13. Fixed ring; 14. Through hole; 15. Anti-overflow groove; 16. Second exhaust hole. Detailed Description of the Preferred Embodiment

[0025] Embodiment 1: An equipment for producing rare earth metals by lanthanum thermal reduction method, as Figure 1 and Figure 2 shown, includes

[0026] a furnace shell 1, a temperature measuring device 2 for temperature measurement is provided at the top of the furnace shell 1 and the bottom of the outer wall, a vacuum system 3 for maintaining the vacuum inside the furnace shell 1 is provided at the top of the outer wall of the furnace shell 1, a cooling device 10 for cooling is provided on the inner wall at the top of the furnace shell 1. The temperature measuring device 2, the vacuum system 3 and the cooling device 10 are specifically disclosed in the application with the application number (201120213845.0), and will not be elaborated here;

[0027] a heating assembly, the heating assembly is arranged at the bottom position of the inner wall of the furnace shell 1, the heating assembly includes a heating element 5 and a crucible 6, and a heat insulation layer 4 for heat preservation is also arranged in the heating assembly;

[0028] a collection assembly, the collection assembly is arranged on the top of the crucible 6, and the collection assembly includes a collection barrel 7 and a guide ring 8 for guiding;

[0029] an anti-overflow assembly, the anti-overflow assembly is arranged between the collection barrel 7 and the guide ring 8, and the anti-overflow assembly includes a fixed ring 13, a through hole 14 and an anti-overflow groove 15.

[0030] The heat insulation layer 4 is fixedly connected to the bottom position of the inner wall of the furnace shell 1 through a fixing rod. A columnar groove is provided on the heat insulation layer 4. The heating element 5 is arranged in the columnar groove through an electrical signal. The heating element 5 is annular. The crucible 6 is arranged inside the heating element 5, and a top cover 11 is arranged on the top of the crucible 6. The collection bucket 7 is fixedly connected to the top position of the top cover 11, and the top of the collection bucket 7 is arranged inside the cooling device 10.

[0031] As Figure 3 Figure 4 shown, the guiding ring 8 is annularly wound around the outer wall of the collection bucket 7. The bottom end of the guiding ring 8 is fixedly connected to the top position of the top cover 11. The top of the guiding ring 8 is fixedly connected to the inner wall of the cooling device 10. A plurality of first exhaust holes 12 arranged in a circumferential pattern are provided on the top of the top cover 11. The first exhaust holes 12 are arranged between the collection bucket 7 and the guiding ring 8. Both ends of the cross-section of the first exhaust holes 12 are arc-shaped, and the first exhaust holes 12 are of a structure with a smaller upper part and a larger lower part.

[0032] A guiding plate 9 is arranged at the top position of the guiding ring 8 and the collection bucket 7. The guiding plate 9 is an annular plate with an inclined cross-section. A plurality of second exhaust holes 16 arranged in a circumferential pattern are provided on the guiding plate 9. Both ends of the cross-section of the second exhaust holes 16 are arc-shaped, and the second exhaust holes 16 are of a structure with a smaller upper part and a larger lower part.

[0033] Through the arranged first exhaust holes 12 and second exhaust holes 16, and the arc-shaped design of the cross-sections of the first exhaust holes 12 and the second exhaust holes 16, the gas can be guided, improving the gas passing efficiency. Moreover, the design with a smaller upper part and a larger lower part can prevent gas backflow and affect the processing efficiency.

[0034] As Figure 3 shown, a fixing ring 13 is annularly fixedly connected between the collection bucket 7 and the guiding ring 8. A through hole 14 is provided on the fixing ring 13, and the bottom end of the through hole 14 is communicated with the first exhaust hole 12.

[0035] A plurality of anti-overflow grooves 15 arranged linearly are staggered at both ends of the through hole 14. The cross-section of the anti-overflow grooves 15 is arc-shaped, and both the upper and lower ends of the anti-overflow grooves 15 are communicated with the through hole 14 and the cross-sectional area of the bottom end of the anti-overflow grooves 15 is smaller than that of the top end.

[0036] Through the arranged through hole 14 and anti-overflow grooves 15, when the gas at the bottom enters the through hole 14 through the first exhaust hole 12, the cross-sectional area of the bottom of the anti-overflow grooves 15 is small, thus preventing the gas from entering the anti-overflow grooves 15 and enabling it to be discharged through the through hole 14. When the gas falls, the cross-sectional area of the upper end of the anti-overflow grooves 15 is large, enabling the gas to enter the inner circulation of the anti-overflow grooves 15, preventing the gas from falling from the through hole 14, and further preventing the gas from flowing back through the through hole 14 and affecting the processing efficiency.

[0037] Working principle of the utility model: When processing is required, raw materials are added into the crucible 6 at this time. The heating element 5 is driven by an electric signal to heat, and the raw materials in the crucible 6 are heated and vaporized. Then, it can pass through the first exhaust hole 12 on the top cover 11, and then be guided to the top through the through hole 14 on the fixing ring 13, and fall into the cooling device 10 at the top through the second exhaust hole 16 on the guiding plate 9. It is cooled and liquefied by the cooling device 10 and collected in the collection barrel 7, and then solidified by cooling and collected in the collection barrel 7.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. An apparatus for producing rare earth metals by lanthanum thermal reduction method, characterized in that, Including: A furnace shell (1), with temperature measuring devices (2) for temperature measurement arranged at the top of the furnace shell (1) and the bottom of the outer wall, a vacuum system (3) for maintaining vacuum inside the furnace shell (1) arranged at the top of the outer wall of the furnace shell (1), and a cooling device (10) for cooling arranged on the inner wall at the top of the furnace shell (1); A heating assembly, which is arranged at the bottom position of the inner wall of the furnace shell (1). The heating assembly includes a heating element (5) and a crucible (6), and a heat preservation layer (4) for heat preservation is also arranged inside the heating assembly; A collection assembly, which is arranged at the top of the crucible (6). The collection assembly includes a collection bucket (7) and a guiding ring (8) for guiding; An anti-overflow assembly, which is arranged between the collection bucket (7) and the guiding ring (8). The anti-overflow assembly includes a fixing ring (13), a through hole (14), and an anti-overflow groove (15).

2. The equipment for producing rare earth metals by lanthanum thermal reduction method according to claim 1, characterized in that: The heat preservation layer (4) is fixedly connected to the bottom position of the inner wall of the furnace shell (1) through fixing rods. A columnar groove is formed on the heat preservation layer (4). The heating element (5) is arranged in the columnar groove through an electrical signal. The heating element (5) is annular. The crucible (6) is arranged inside the heating element (5), and a top cover (11) is arranged at the top of the crucible (6). The collection bucket (7) is fixedly connected to the top position of the top cover (11), and the top of the collection bucket (7) is arranged inside the cooling device (10).

3. The equipment for producing rare earth metals by lanthanum thermal reduction method according to claim 2, characterized in that: The guiding ring (8) is annularly arranged around the outer wall of the collection bucket (7). The bottom end of the guiding ring (8) is fixedly connected to the top position of the top cover (11). The top of the guiding ring (8) is fixedly connected to the inner wall of the cooling device (10). A plurality of first exhaust holes (12) arranged in a circular pattern are formed on the top of the top cover (11). The first exhaust holes (12) are arranged between the collection bucket (7) and the guiding ring (8). Both ends of the cross-section of the first exhaust holes (12) are arc-shaped, and the first exhaust holes (12) have a structure with a smaller upper part and a larger lower part.

4. The apparatus for producing rare earth metals by lanthanum thermal reduction method according to claim 3, characterized in that: A guiding plate (9) is arranged at the top positions of the guiding ring (8) and the collection bucket (7). The guiding plate (9) is an annular plate with an inclined cross-section. A plurality of second exhaust holes (16) arranged in a circular pattern are formed on the guiding plate (9). Both ends of the cross-section of the second exhaust holes (16) are arc-shaped, and the second exhaust holes (16) have a structure with a smaller upper part and a larger lower part.

5. The equipment for producing rare earth metals by the lanthanum thermal reduction method according to claim 3, characterized in that: The fixing ring (13) is annularly and fixedly connected between the collection bucket (7) and the guiding ring (8). A through hole (14) is formed on the fixing ring (13), and the bottom end of the through hole (14) is communicated with the first exhaust hole (12).

6. The apparatus for producing rare earth metals by the lanthanum thermal reduction method according to claim 5, characterized in that: A plurality of anti-overflow grooves (15) arranged linearly are staggered at both ends of the through hole (14). The cross-section of the anti-overflow grooves (15) is arc-shaped, and both the upper and lower ends of the anti-overflow grooves (15) are communicated with the through hole (14), and the cross-sectional area of the bottom end of the anti-overflow grooves (15) is smaller than that of the top cross-section.

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