Purifying device for purifying high-purity aluminum oxide raw material

Abstract

The utility model discloses a purification device for purifying a high-purity aluminum oxide raw material, and particularly relates to the technical field of aluminum oxide purification, the purification device comprises a crucible furnace, a top cover is arranged at the top end of the crucible furnace, hydraulic lifting rods are symmetrically mounted on the top cover, and a lifting bracket is jointly supported by the top ends of the two hydraulic lifting rods; a material skimming mechanism is installed on the lifting support, one side of the material skimming mechanism is connected with a follow-up assembly in a meshed mode, a shielding gas injection port and a vacuum connecting port are formed in the top cover, the shielding gas injection port is connected with an inert gas tank, and the vacuum connecting port is connected with a vacuum pump. The aluminum oxide raw material purification device can be used for further separating impurities in aluminum oxide raw materials, so that the aluminum oxide raw materials are further purified, and the purity of the purified aluminum oxide raw materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum oxide purification, and more specifically, to a purification device for purifying high-purity aluminum oxide raw materials. Background Art

[0002] Sapphire, commonly known as corundum, is mainly composed of Al2O3, a common simple coordination oxide crystal. Pure aluminum oxide crystals are colorless and transparent. Because of its unique crystal structure, excellent mechanical properties, optical properties and chemical stability, it can be used in high temperature environments of 2000℃, so it is widely used in infrared military devices, satellite space technology, high-intensity laser window materials and semiconductors, large-scale integrated circuit substrate materials.

[0003] Due to the high hardness of sapphire materials, it is difficult to process. Under existing technical conditions, sapphire materials are usually cut with diamond wire. During the cutting process, the sapphire material is greatly lost, and a large amount of aluminum oxide powder containing impurities is generated. Due to the lack of advanced raw material recovery technology, this aluminum oxide powder containing impurities is usually treated as waste, resulting in large material loss and increased costs. The most fundamental reason for this phenomenon is that the aluminum oxide powder contains a large amount of impurities, which is difficult to separate.

[0004] The utility model patent with patent publication number CN217127603U discloses a purification device for purifying high-purity alumina raw materials, which includes a crucible, a vacuum module, a temperature adjustment module, an inert gas module and a pulling module. A height module is arranged in the crucible, one side of the vacuum module is connected to the inside of the crucible and does not exceed the height of the height module, and the other side is connected to the vacuum system. The temperature adjustment module is arranged on the periphery of the crucible, the inert gas module is connected to the inside of the crucible, the pulling module is arranged above the crucible, and the vacuum module includes a mechanical pump and a diffusion pump connected to the vacuum system. Each stage of the utility model is carried out quickly, which can effectively shorten the purification process time, reduce power consumption, and reduce costs.

[0005] However, when this structure is actually used, when purifying the alumina impurity powder, it only separates the impurities that can sink to the bottom of the alumina to achieve purification, while there are still light floating impurities in the alumina impurity powder, which leads to certain impurities in the alumina after purification by this structure, resulting in the purity of the purified alumina raw material is not high, so further purification is required. Therefore, a purification device for purifying high-purity alumina raw material is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a purification device for purifying high-purity alumina raw materials to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a purification device for purifying high-purity alumina raw materials, comprising a crucible furnace, a top cover is arranged on the top of the crucible furnace, hydraulic lifting rods are symmetrically installed on the top cover, the tops of two hydraulic lifting rods jointly support a lifting bracket, a skimming mechanism is installed on the lifting bracket, one side of the skimming mechanism is meshingly connected with a follower component, and a protective gas injection port and a vacuum connection port are arranged on the top cover.

[0008] The alumina raw material after the heavy impurities are filtered out and preliminarily purified is placed in a crucible furnace, and after the top cover is placed on the crucible furnace, the residual air in the crucible furnace is extracted from the vacuum connection port by a vacuum pump, and then the protective gas is injected from the protective gas injection port through the inert gas tank, and then heated and purified. After the alumina raw material is melted, the two hydraulic lifting rods are operated to adjust the height of the lifting bracket, so that the lifting bracket, the skimming mechanism and the bottom end of the follow-up component are lowered to the liquid surface of the alumina solution. The skimming mechanism is operated, and the follow-up component is operated accordingly, so that the first skimming spoon and the second skimming spoon at the bottom are rotated and synchronously approach the fixed cover plate, so that the light impurities floating on the top of the alumina solution are collected in the closed space connected by the two skimming spoons and the fixed cover plate, thereby separating the light impurities and further improving the purity of the purified alumina raw material.

[0009] Preferably, the protective gas injection port is connected to an inert gas tank, and the vacuum connection port is connected to a vacuum pump.

[0010] Preferably, the lifting bracket comprises a lifting plate, and the lifting plate is installed on the top ends of two hydraulic lifting rods;

[0011] A top frame, the top frame is installed on the top of the lifting plate;

[0012] A tube, the tube is welded to the bottom end of the lifting plate, and the tube is slidably connected to the top cover;

[0013] A fixed cover plate is welded to the bottom end of the tube.

[0014] Preferably, the top end of the skimming mechanism is connected to the top frame, and the bottom end of the skimming mechanism is rotatably connected to the tube.

[0015] Preferably, the skimming mechanism comprises a motor, and the motor is mounted on the top frame;

[0016] A rotating rod, the top end of which is connected to the output end of the motor;

[0017] A driving gear, wherein the driving gear is arranged on the rotating rod;

[0018] A first skimming spoon is vertically mounted on one side of the rotating rod.

[0019] Preferably, the follower assembly comprises a follower rod, and the follower rod is rotatably mounted in the tube;

[0020] A follower gear, which is coaxially mounted on the top of the follower rod and is meshed and connected with the driving gear;

[0021] A second skimming spoon is mounted on the bottom end of the follower rod.

[0022] Technical effects and advantages of the utility model:

[0023] 1. Through the arrangement of the motor, the rotating rod, the follower gear, the driving gear, the first skimming spoon, the second skimming spoon, the follower rod and the follower gear, compared with the prior art, during the rotation of the rotating rod, the driving gear rotates accordingly, so that the driving gear meshes with the follower gear to rotate, so that the follower rod drives the second skimming spoon to rotate in the opposite direction relative to the first skimming spoon, so that the second skimming spoon skims the light impurities floating on the other half of the alumina liquid surface, so that the light impurities inside the alumina can be completely separated under the cooperation of the two skimming spoons and the fixed cover plate, so that the purity of the alumina after purification can be improved;

[0024] 2. Through the arrangement of hydraulic lifting rods, lifting plates, tubes and fixed cover plates, compared with the prior art, the lifting plates can be lifted and lowered by lifting two hydraulic lifting rods, so that the skimming mechanism installed on the top frame and the follow-up component arranged in the tube can be lifted and lowered, thereby adjusting the height position of the fixed cover plate in the crucible furnace, so that the skimming spoon and the fixed cover plate can be on the liquid surface of the melted alumina raw material, so as to separate and process the light impurities on the liquid surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0026] Figure 2 It is a schematic diagram of the top cover connection structure of the utility model.

[0027] Figure 3 It is a structural schematic diagram of the lifting bracket of the utility model.

[0028] Figure 4 It is a schematic diagram of the connection structure of the skimming mechanism and the follower assembly of the utility model.

[0029] Figure 5 It is a structural schematic diagram of the material skimming mechanism of the utility model.

[0030] Figure 6 It is a structural schematic diagram of the follower assembly of the utility model.

[0031] The accompanying drawings are marked as follows: 1. crucible furnace; 2. top cover; 3. hydraulic lifting rod; 4. lifting bracket; 401. lifting plate; 402. top frame; 403. tube; 404. fixed cover plate; 5. skimming mechanism; 501. motor; 502. rotating rod; 503. driving gear; 504. first skimming spoon; 6. follow-up assembly; 601. follow-up rod; 602. follow-up gear; 603. second skimming spoon; 7. protective gas injection port; 8. vacuum connection port. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] As attached Figure 1-6 A purification device for purifying high-purity alumina raw materials is shown, comprising a crucible furnace 1, a top cover 2 is arranged on the top of the crucible furnace 1, hydraulic lifting rods 3 are symmetrically installed on the top cover 2, and the tops of two hydraulic lifting rods 3 jointly support a lifting bracket 4, a skimming mechanism 5 is installed on the lifting bracket 4, and a follower component 6 is meshingly connected to one side of the skimming mechanism 5, a protective gas injection port 7 and a vacuum connection port 8 are arranged on the top cover 2, the protective gas injection port 7 is connected to an inert gas tank, and the vacuum connection port 8 is connected to a vacuum pump.

[0034] In a specific implementation, the alumina raw material after the heavy impurities are filtered out and preliminarily purified is placed in the crucible furnace 1, and after the top cover 2 is placed on the crucible furnace 1, the residual air in the crucible furnace 1 is extracted from the vacuum connection port 8 by a vacuum pump, and then, the protective gas is injected from the protective gas injection port 7 through the inert gas tank, and then heated and purified. After the alumina raw material is melted, the two hydraulic lifting rods 3 are operated to adjust the height of the lifting bracket 4, so that the lifting bracket 4, the skimming mechanism 5 and the bottom end of the follower component 6 are lowered to the liquid surface of the alumina solution, and the skimming mechanism 5 is operated, so that the follower component 6 runs along, so that the first skimming spoon 504 and the second skimming spoon 603 at the bottom are rotated and synchronously approach the fixed cover plate 404, so that the light impurities floating on the top of the alumina solution are collected in the closed space connected by the two skimming spoons and the fixed cover plate 404, so that the light impurities are separated, and the purity of the purified alumina raw material is further improved.

[0035] As attached Figure 3 As shown, the lifting bracket 4 includes a lifting plate 401, and the lifting plate 401 is installed on the top of two hydraulic lifting rods 3;

[0036] A top frame 402, wherein the top frame 402 is installed on the top of the lifting plate 401;

[0037] The tube 403 is welded to the bottom end of the lifting plate 401 and is slidably connected to the top cover 2;

[0038] The fixed cover plate 404 is welded to the bottom end of the tube 403 .

[0039] The top end of the skimming mechanism 5 is connected to the top frame 402 , and the bottom end of the skimming mechanism 5 is rotatably connected to the tube 403 .

[0040] During specific implementation, by lifting and lowering the two hydraulic lifting rods 3, the lifting plate 401 can be lifted and lowered, so that the skimming mechanism 5 installed on the top frame 402 and the follower component 6 set in the tube 403 can be lifted and lowered, so that the height position of the fixed cover plate 404 in the crucible furnace 1 can be adjusted, so that the skimming spoon and the fixed cover plate 404 can be on the liquid surface of the melted alumina raw material, so as to separate the light impurities on the liquid surface.

[0041] As attached Figure 5 As shown, the skimming mechanism 5 includes a motor 501, and the motor 501 is installed on the top frame 402;

[0042] A rotating rod 502, the top end of which is connected to the output end of the motor 501;

[0043] A driving gear 503, wherein the driving gear 503 is disposed on the rotating rod 502;

[0044] The first skimming spoon 504 is vertically mounted on one side of the rotating rod 502 .

[0045] During specific implementation, the motor 501 is operated to rotate the rotating rod 502, thereby causing the first skimming spoon 504 at the bottom to rotate. During the rotation of the first skimming spoon 504, the light impurities on the surface of the alumina raw material can be skimmed off. When the first skimming spoon 504 is attached to one side of the fixed cover plate 404, the skimmed light impurities can be sealed, thereby separating the light impurities from the alumina raw material, thereby improving the purity of the alumina purification.

[0046] As attached Figure 6 As shown, the follower assembly 6 includes a follower rod 601, and the follower rod 601 is rotatably installed in the tube 403;

[0047] A follower gear 602, wherein the follower gear 602 is coaxially mounted on the top of the follower rod 601, and the follower gear 602 is meshed and connected with the driving gear 503;

[0048] The second skimming spoon 603 is mounted at the bottom end of the follower rod 601 .

[0049] During specific implementation, as the rotating rod 502 rotates, the driving gear 503 rotates accordingly, so that the driving gear 503 engages with the follower gear 602 to rotate, so that the follower rod 601 drives the second skimming spoon 603 to rotate in the opposite direction relative to the first skimming spoon 504, so that the second skimming spoon 603 skims the light impurities floating on the other half of the alumina liquid surface, so that with the cooperation of the two skimming spoons and the fixed cover plate 404, the light impurities inside the alumina can be completely separated, thereby improving the purity of the alumina after purification.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A purification device for purifying high-purity alumina raw materials, comprising a crucible furnace (1), characterized in that: The crucible furnace (1) is provided with a top cover (2) at the top, and hydraulic lifting rods (3) are symmetrically mounted on the top cover (2). The tops of the two hydraulic lifting rods (3) jointly support a lifting bracket (4), and a material skimming mechanism (5) is mounted on the lifting bracket (4). A follower component (6) is meshingly connected to one side of the material skimming mechanism (5). A protective gas injection port (7) and a vacuum connection port (8) are provided on the top cover (2).

2. A purification device for purifying high-purity alumina raw materials according to claim 1, characterized in that: The protective gas injection port (7) is connected to an inert gas tank, and the vacuum connection port (8) is connected to a vacuum pump.

3. A purification device for purifying high-purity alumina raw materials according to claim 2, characterized in that: The lifting bracket (4) comprises a lifting plate (401), and the lifting plate (401) is installed on the top ends of two hydraulic lifting rods (3); A top frame (402), wherein the top frame (402) is installed on the top of the lifting plate (401); A tube (403), wherein the tube (403) is welded to the bottom end of the lifting plate (401), and the tube (403) is slidably connected to the top cover (2); A fixed cover plate (404) is welded to the bottom end of the tube (403).

4. The purification device for purifying high-purity alumina raw materials according to claim 3, characterized in that: The top end of the skimming mechanism (5) is connected to the top frame (402), and the bottom end of the skimming mechanism (5) is rotatably connected to the tube (403).

5. The purification device for purifying high-purity alumina raw materials according to claim 4, characterized in that: The skimming mechanism (5) comprises a motor (501), and the motor (501) is mounted on the top frame (402); A rotating rod (502), the top end of which is connected to the output end of the motor (501); A driving gear (503), wherein the driving gear (503) is arranged on the rotating rod (502); A first skimming spoon (504), wherein the first skimming spoon (504) is vertically mounted on one side of the rotating rod (502).

6. A purification device for purifying high-purity alumina raw materials according to claim 5, characterized in that: The follower assembly (6) comprises a follower rod (601), and the follower rod (601) is rotatably mounted in the tube (403); A follower gear (602), the follower gear (602) is coaxially mounted on the top of the follower rod (601), and the follower gear (602) is meshingly connected with the driving gear (503); A second skimming spoon (603) is mounted on the bottom end of the follower rod (601).

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