Electron beam smelting furnace for efficiently purifying tantalum target material

Abstract

The invention discloses an electron beam smelting furnace for efficiently purifying a tantalum target material, which belongs to the technical field of metal production and refining equipment and comprises an electron beam smelting furnace, a feeding pipe penetrates through the electron beam smelting furnace, an electron beam gun is arranged on the electron beam smelting furnace, a vacuum pipe is arranged on one side of the electron beam smelting furnace, and a discharging pipe is arranged at the bottom of a discharging hopper. A discharging device is arranged at the bottom of the electron beam smelting furnace and comprises a collecting tank, the collecting tank is connected with the electron beam smelting furnace through a support, a fixing mechanism is arranged in the collecting tank, a rotating mechanism is arranged on the fixing mechanism and makes sliding contact with a discharging pipe, and a driving mechanism and a lifting mechanism are arranged at the bottom of the electron beam smelting furnace. According to the tantalum target production device, continuous melting, continuous solidification into a tantalum target and continuous taking out of the tantalum target of the tantalum crushed materials are achieved, and the efficiency of tantalum solution generation and tantalum target production is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal production and refining equipment, in particular to an electron beam melting furnace for efficient purification of tantalum target materials. Background Art

[0002] Tantalum is a metal element. There is a process in industrial production that requires putting tantalum scraps with a purity of 99.5% into an electron beam furnace for efficient purification. Under a vacuum environment, the tantalum scraps are melted into liquid in a crucible through an electron beam gun, so that the impurity gas and some vaporized metal impurities in the tantalum scraps are extracted by the vacuum system to obtain a tantalum solution with a purity of 99.9%. The tantalum solution is then poured into a mold, and after the tantalum solution in the mold is cooled and solidified, a tantalum target material, also called a tantalum ingot, is obtained. In the prior art, after obtaining the tantalum solution in the crucible, it is necessary to open the electron beam furnace, take out the crucible, and then pour the tantalum solution in the crucible into each mold through a turning device, and then cool the mold with cold air to solidify the tantalum solution in the crucible, and then take out the formed tantalum target material. The operation is cumbersome, and the crucible must be taken out every time, so continuous production is impossible, and the placement of the crucible is also very inconvenient. Summary of the invention

[0003] In order to solve the technical problems mentioned in the above background technology, the present invention provides an electron beam melting furnace for efficient purification of tantalum targets, and the technical solution adopted is as follows: It includes an electron beam furnace, a feed pipe passes through the electron beam furnace, an electron beam gun is arranged on the electron beam furnace, a vacuum tube is arranged on one side of the electron beam furnace, a crucible is arranged in the electron beam furnace, a discharge hopper is arranged at the bottom of the crucible, a discharge pipe is arranged at the bottom of the discharge hopper, a discharge device is arranged at the bottom of the electron beam furnace, the discharge device includes a collecting trough, the collecting trough and the electron beam furnace are connected by a bracket, a fixing mechanism is arranged in the collecting trough, a rotating mechanism is arranged on the fixing mechanism, the rotating mechanism is in sliding contact with the discharge pipe, a driving mechanism and a lifting mechanism are arranged at the bottom of the electron beam furnace, the driving mechanism drives the lifting mechanism and the rotating mechanism to rotate, and a refrigeration mechanism is arranged at the bottom of the electron beam furnace.

[0004] Furthermore, the fixing mechanism includes a support column fixed to the bottom of the collecting tank, a fixing plate is arranged on the support column, and a discharge hole is arranged on the fixing plate.

[0005] Furthermore, the rotating mechanism includes a rotating disk, a first hollow tube and a second hollow tube are embedded in the bottom of the rotating disk, and the first hollow tube and the second hollow tube are connected to the rotating disk, a rotating shaft is arranged on the rotating disk, a first gear is arranged at the upper end of the rotating shaft, a first bearing is arranged at the lower end of the rotating shaft, the first bearing is fixed on the fixed disk, and the discharge pipe is in sliding contact with the rotating disk.

[0006] Furthermore, the driving mechanism includes a motor fixed to the bottom of the electron beam furnace, and a half gear is arranged on the output shaft of the motor, and the half gear is intermittently meshed with the first gear.

[0007] Furthermore, the lifting mechanism includes a shell, a second bearing is provided on the upper part of the shell, a rotating part and a lifting part are provided in the shell, the rotating part and the lifting part are movably connected, one end of the rotating part extends to the upper side of the shell, and one end of the lifting part extends to the lower side of the shell, an L-shaped fixing plate is provided on the shell, and one end of the L-shaped fixing plate is connected to the bottom of the electron beam furnace.

[0008] Furthermore, the rotating part includes a cylinder arranged in the shell, a wave-shaped groove is arranged around the entire circumference of the cylinder, a lifting part is arranged in the wave-shaped groove, a rotating shaft is arranged on the cylinder, the rotating shaft passes through the shell and is connected to the second bearing, and a second gear is arranged on the rotating shaft.

[0009] Furthermore, the lifting member includes a set of limiting rods, a fixing block is arranged on the limiting rods, a fixing plate is arranged on the fixing block, a bottom plate is arranged at the bottom of the fixing plate, a lifting rod is arranged at the bottom of the bottom plate, and the lifting rod runs through the bottom of the shell.

[0010] Furthermore, the refrigeration mechanism includes a fixed rod, one end of which is fixed to the bottom of the electron beam furnace, and an arc plate is arranged on the fixed rod. The interior of the arc plate is a hollow structure, and air holes are arranged on one side of the arc plate and an air pipe is arranged on the other side.

[0011] The present invention has the following advantages: the rotating mechanism and the lifting mechanism are driven to rotate simultaneously by the driving mechanism; when the rotating mechanism stops intermittently, the discharge pipe is connected with the rotating mechanism, the tantalum solution in the crucible falls into the discharge pipe through the discharge hopper, and the tantalum solution in the discharge pipe falls into the rotating mechanism; when the rotating mechanism rotates, the rotating mechanism seals the bottom of the discharge pipe while rotating; during the rotating process of the rotating mechanism, the tantalum solution in the rotating mechanism passes through one side of the refrigeration mechanism, and realizes heat exchange with the cold air ejected from the refrigeration structure, so that the tantalum solution in the rotating mechanism is cooled and solidified to form a tantalum target material; when the tantalum target material is rotated, the tantalum solution in the rotating mechanism is cooled and solidified to form a tantalum target material. When the machine stops moving, one end of the rotating mechanism with the tantalum target is connected to the fixed mechanism. During the stopping process, it just reaches the lower side of the lifting mechanism. While the lifting mechanism rotates, one end of the lifting mechanism drops, pushing the tantalum target in the rotating mechanism downward, so that the tantalum target is separated from the rotating mechanism and falls into the collecting tank through the fixed mechanism. At the same time, the other side of the rotating mechanism is also connected to the discharge pipe, and the tantalum solution falls into one side of the rotating mechanism, thereby realizing the continuous melting of the tantalum scrap, continuous solidification into tantalum target and continuous removal of the tantalum target, which greatly improves the efficiency of generating tantalum solution and making tantalum target. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The three-dimensional Figure 1 ; Figure 2The three-dimensional Figure 2 ; Figure 3 The three-dimensional Figure 3 ; Figure 4 For the present invention Figure 3 A partial enlarged view of point a in the middle; Figure 5 The three-dimensional Figure 4 .

[0013] Figures: 1 electron beam furnace, 2 feed pipe, 3 electron beam gun, 4 vacuum tube, 5 crucible, 6 discharge hopper, 7 discharge pipe, 8 collecting trough, 9 bracket, 10 pillar, 11 fixed plate, 12 discharge hole, 13 rotating plate, 14 first hollow tube, 15 second hollow tube, 16 rotating shaft, 17 first gear, 18 first bearing, 19 motor, 20 half gear, 21 shell, 22 second bearing, 23 L-shaped fixed plate, 24 cylinder, 25 wavy groove, 26 rotating shaft, 27 second gear, 28 limit rod, 29 fixed block, 30 fixed plate, 31 bottom plate, 32 lifting rod, 33 fixed rod, 34 arc plate, 35 air hole, 36 air pipe. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Please refer to Figure 1-5The present invention discloses an electron beam furnace for efficient purification of tantalum target material, comprising an electron beam furnace 1, a feed pipe 2 running through the electron beam furnace 1, tantalum scraps enter the electron beam furnace 1 through the feed pipe 2, an electron beam gun 3 is arranged on the electron beam furnace 1, a vacuum tube 4 is arranged on one side of the electron beam furnace 1, a crucible 5 is arranged in the electron beam furnace 1, one end of the feed pipe 2 located in the electron beam furnace 1 is located on the upper side of the crucible 5, the tantalum scraps in the feed pipe 2 enter the electron beam furnace 1 through the feed pipe 2 and then fall into the crucible 5, the electron beam gun 3 emits an electron beam to melt the tantalum scraps in the crucible 5 to form a tantalum solution, a discharge hopper 6 is arranged at the bottom of the crucible 5, and a discharge hopper 6 is arranged at the bottom of the discharge hopper 6. Tube 7, the tantalum solution in the crucible 5 falls into the discharge hopper 6, and then enters the discharge tube 7. A discharge device is arranged at the bottom of the electron beam furnace 1, and the discharge device includes a collecting tank 8. After the tantalum solution is solidified into a tantalum target material, it falls into the collecting tank 8 and is collected. The collecting tank 8 is connected to the electron beam furnace 1 through a bracket 9, and the collecting tank 8 and the electron beam furnace 1 are connected through the bracket 9. A fixing mechanism is arranged in the collecting tank 8, and a rotating mechanism is arranged on the fixing mechanism. The rotating mechanism is in sliding contact with the discharge tube 7. A driving mechanism and a lifting mechanism are arranged at the bottom of the electron beam furnace 1. The driving mechanism drives the lifting mechanism and the rotating mechanism to rotate. A refrigeration mechanism is arranged at the bottom of the electron beam furnace 1, and cold air is passed into the refrigeration mechanism.

[0016] The fixing mechanism includes a support 10 fixed to the bottom of the collecting tank 8, and a fixing plate 11 is arranged on the support 10. The fixing plate 11 is fixed to the upper side of the collecting tank 8 through the support 10. A discharge hole 12 is arranged on the fixing plate 11, and the inner diameter of the discharge hole 12 is the same as the inner diameter of the discharge pipe 7, the first hollow tube 14 and the second hollow tube 15.

[0017] The rotating mechanism includes a rotating disk 13, a first hollow tube 14 and a second hollow tube 15 are embedded in the bottom of the rotating disk 13 and are connected to the rotating disk 13, the first hollow tube 14 and the second hollow tube 15 rotate with the rotation of the rotating disk 13, a rotating shaft 16 is arranged on the rotating disk 13, a first gear 17 is arranged on the upper end of the rotating shaft 16, a first bearing 18 is arranged on the lower end of the rotating shaft 16, the first bearing 18 is fixed on the fixed disk 11, the first gear 17 rotates to drive the rotating shaft 16 to rotate, the rotating shaft 16 rotates on the first bearing 18, the discharge pipe 7 is in sliding contact with the rotating disk 13, so that the bottom of the discharge pipe 7 is sealed when the rotating disk 13 rotates, and the driving mechanism includes a motor 19 fixed at the bottom of the electron beam furnace 1, a half gear 20 is arranged on the output shaft of the motor 19, the half gear 20 is intermittently meshed with the first gear 17, the motor 19 drives the half gear 20 to rotate, and the half gear 20 drives the first gear 17 to rotate intermittently.

[0018] The lifting mechanism includes a shell 21, a second bearing 22 is arranged on the upper part of the shell 21, a rotating part and a lifting part are arranged in the shell 21, the rotating part and the lifting part are movably connected, one end of the rotating part extends to the upper side of the shell 21, and one end of the lifting part extends to the lower side of the shell 21. The rotation of the rotating part drives the lifting part to rise and fall. An L-shaped fixing plate 23 is arranged on the shell 21, one end of the L-shaped fixing plate 23 is connected to the bottom of the electron beam furnace 1, and the shell 21 is suspended and fixed by the L-shaped fixing plate 23.

[0019] The rotating member includes a cylinder 24 arranged in the shell 21, and a wave-shaped groove 25 is arranged around the entire circumference of the cylinder 24. A lifting member is arranged in the wave-shaped groove 25. A rotating shaft 26 is arranged on the cylinder 24, and the rotating shaft 26 passes through the shell 21 and is connected to the second bearing 22. A second gear 27 is arranged on the rotating shaft 26. The half gear 20 drives the second gear 27 to rotate, and the second gear 27 drives the rotating shaft 26 to rotate on the second bearing 22. The rotating shaft 26 drives the cylinder 24 to rotate, and the wave-shaped groove 25 rotates with the rotation of the cylinder 24, and the lifting member performs reciprocating lifting and lowering motion with the rotation of the wave-shaped groove 25.

[0020] The lifting member includes a group of limit rods 28, which are placed in the wavy groove 25. A fixed block 29 is arranged on the limit rod 28, a fixed plate 30 is arranged on the fixed block 29, a bottom plate 31 is arranged at the bottom of the fixed plate 30, a lifting rod 32 is arranged at the bottom of the bottom plate 31, and the lifting rod 32 passes through the bottom of the shell 21. When the cylinder 24 drives the wavy groove 25 to rotate in a circle, the limit rod 28 moves up and down along a wavy trajectory in the wavy groove 25 as the wavy groove 25 rotates in a circle. The limit rod 28 drives the fixed block 29, the fixed plate 30 and the bottom plate 31 to move up and down.

[0021] The refrigeration mechanism includes a fixing rod 33, one end of which is fixed to the bottom of the electron beam furnace 1. An arc plate 34 is arranged on the fixing rod 33. The arc plate 34 is suspended and fixed by the fixing rod 33. The interior of the arc plate 34 is a hollow structure. An air hole 35 is arranged on one side of the arc plate 34 and an air pipe 36 is arranged on the other side. Cold air enters the arc plate 34 through the air pipe 26, and the cold air in the arc plate 34 is ejected through the air hole 35.

[0022] The working principle of the present invention is as follows: cold air enters the arc plate 34 through the air pipe 36, and is ejected through the air hole 36, starting the motor 19, the motor 19 drives the half gear 20 to rotate, the half gear 20 drives the first gear 17 and the second gear 27 to rotate slowly, the first gear 17 drives the rotating shaft 16 to rotate on the first bearing 18, the rotating shaft 16 drives the rotating disk 13, the first hollow tube 14 and the second hollow tube 15 to rotate clockwise, the rotating disk 13 is first sealed with the discharge pipe 7 when rotating, at the same time, the tantalum scraps enter the electron beam furnace 1 through the feed pipe 2, and then fall into the crucible 5 and the discharge hopper 6, the electron beam gun 3 emits an electron beam to melt the tantalum scraps in the crucible 5 and the discharge hopper 6 into a tantalum solution, and the vacuum system is vacuumed. The hollow tube 4 evacuates the electron beam furnace 1 so that the impurity gas and impurity metal evaporated in the tantalum solution are extracted by the vacuum tube 4. When the gear tooth portion of the half gear 20 is disengaged from the first gear 17, the first gear 17 stops rotating, and the rotating disk 13 also stops rotating. At this time, the discharge pipe 7 is directly opposite to the first hollow tube 14 and is connected thereto. The bottom of the first hollow tube 14 is sealed by the fixed disk 11. The tantalum solution in the crucible 5 and the discharge hopper 6 enters the first hollow tube 14 through the discharge pipe 6. After a portion of the tantalum solution in the first hollow tube 14 enters, the gear tooth portion of the half gear 20 rotates and meshes with the first gear 17 again, so that the rotating disk 13 and the first hollow tube 14 and the second hollow tube 15 rotate again. The tube 14 is separated from the discharge tube 6, and the bottom of the discharge tube 6 is sealed by the rotating disk 13. When the first hollow tube 14 passes through the relative area of ​​the arc plate 34 during the clockwise rotation, it is blown by the cold air sprayed from the air hole 35, so that the tantalum solution in the first hollow tube 14 is cooled and solidified to form a tantalum target material. The tantalum target material is slightly clamped with the inner wall of the first hollow tube 14. When the first hollow tube 14 is facing the discharge hole 12, the second hollow tube 15 is rotated to the lower side of the discharge tube 7, and the gear tooth part of the half gear 20 is separated from the first gear again. The rotating disk 13 stops, and the discharge tube 7 inputs tantalum solution to the second hollow tube 15, and the rotating half gear 20 drives the second gear 27 to rotate, and the second gear 27 drives the rotating shaft 26 in the second shaft The bearing 22 rotates, the rotating shaft 26 drives the cylinder 24 and the wave-shaped groove 25 to rotate, the limiting rod 28 moves downward along the wave-shaped trajectory in the wave-shaped groove 25 as the wave-shaped groove 25 rotates in a circle, the limiting rod 28 drives the fixed block 29, the fixed plate 30, the bottom plate 31 and the lifting rod 32 to move downward, the lifting rod 32 enters the first hollow tube 14, hits the tantalum target in the first hollow tube 14, so that the tantalum target is separated from the first hollow tube 14 and comes out of the discharge hole 12 and falls into the collecting tank 8, and then the lifting rod 32 starts to rise. When the lifting rod 32 is separated from the first hollow tube 14, the rotating disk 13 rotates again, so that the tantalum scraps are continuously melted, continuously solidified into tantalum targets and continuously taken out of the tantalum targets.

[0023] The present invention is simple to operate, convenient to use, and suitable for comprehensive promotion and application. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electron beam furnace for efficient purification of tantalum target material, comprising an electron beam furnace (1), a feed pipe (2) passing through the electron beam furnace (1), an electron beam gun (3) arranged on the electron beam furnace (1), a vacuum tube (4) arranged on one side of the electron beam furnace (1), and a crucible (5) arranged in the electron beam furnace (1), characterized in that: A discharge hopper (6) is provided at the bottom of the crucible (5), a discharge pipe (7) is provided at the bottom of the discharge hopper (6), a discharge device is provided at the bottom of the electron beam furnace (1), the discharge device comprises a collecting tank (8), the collecting tank (8) is connected to the electron beam furnace (1) via a bracket (9), a fixing mechanism is provided in the collecting tank (8), a rotating mechanism is provided on the fixing mechanism, the rotating mechanism is in sliding contact with the discharge pipe (7), a driving mechanism and a lifting mechanism are provided at the bottom of the electron beam furnace (1), the driving mechanism drives the lifting mechanism and the rotating mechanism to rotate, and a cooling mechanism is provided at the bottom of the electron beam furnace (1).

2. The electron beam melting furnace for efficient purification of tantalum target according to claim 1, characterized in that: The fixing mechanism comprises a support (10) fixed to the bottom of the collecting tank (8), a fixing plate (11) being arranged on the support (10), and a discharge hole (12) being arranged on the fixing plate (11).

3. The electron beam melting furnace for efficient purification of tantalum target according to claim 2, characterized in that: The rotating mechanism comprises a rotating disk (13), a first hollow tube (14) and a second hollow tube (15) are embedded in the bottom of the rotating disk (13), and the first hollow tube (14) and the second hollow tube (15) are connected to the rotating disk (13), a rotating shaft (16) is arranged on the rotating disk (13), a first gear (17) is arranged at the upper end of the rotating shaft (16), a first bearing (18) is arranged at the lower end of the rotating shaft (16), and the first bearing (18) is fixed on the fixed disk (11), and the discharge pipe (7) is in sliding contact with the rotating disk (13).

4. The electron beam melting furnace for efficient purification of tantalum target according to claim 3, characterized in that: The driving mechanism comprises a motor (19) fixed to the bottom of the electron beam melting furnace (1), a half gear (20) is arranged on the output shaft of the motor (19), and the half gear (20) is intermittently meshed with the first gear (17).

5. The electron beam furnace for efficient purification of tantalum target according to claim 4, characterized in that: The lifting mechanism comprises a shell (21), a second bearing (22) is arranged on the upper part of the shell (21), a rotating member and a lifting member are arranged inside the shell (21), the rotating member and the lifting member are movably connected, one end of the rotating member extends to the upper side of the shell (21), one end of the lifting member extends to the lower side of the shell (21), an L-shaped fixing plate (23) is arranged on the shell (21), and one end of the L-shaped fixing plate (23) is connected to the bottom of the electron beam furnace (1).

6. The electron beam melting furnace for efficient purification of tantalum target according to claim 5, characterized in that: The rotating member comprises a cylinder (24) arranged in a housing (21); a wave-shaped groove (25) is arranged on the entire circumference of the cylinder (24); a lifting member is arranged in the wave-shaped groove (25); a rotating shaft (26) is arranged on the cylinder (24); the rotating shaft (26) passes through the housing (21) and is connected to the second bearing (22); and a second gear (27) is arranged on the rotating shaft (26).

7. The electron beam melting furnace for efficient purification of tantalum target according to claim 6, characterized in that: The lifting member comprises a group of limiting rods (28), a fixing block (29) is arranged on the limiting rods (28), a fixing plate (30) is arranged on the fixing block (29), a bottom plate (31) is arranged at the bottom of the fixing plate (30), a lifting rod (32) is arranged at the bottom of the bottom plate (31), and the lifting rod (32) passes through the bottom of the shell (21).

8. The electron beam melting furnace for efficient purification of tantalum target according to claim 7, characterized in that: The refrigeration mechanism comprises a fixed rod (33), one end of which is fixed to the bottom of the electron beam furnace (1), an arc-shaped plate (34) is arranged on the fixed rod (33), the interior of the arc-shaped plate (34) is a hollow structure, one side of the arc-shaped plate (34) is provided with an air hole (35), and the other side of the arc-shaped plate (34) is provided with an air pipe (36).

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