CN218673113U - High-purity metal smelting purification and directional solidification integrated device - Google Patents
High-purity metal smelting purification and directional solidification integrated device Download PDFInfo
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- CN218673113U CN218673113U CN202223289913.9U CN202223289913U CN218673113U CN 218673113 U CN218673113 U CN 218673113U CN 202223289913 U CN202223289913 U CN 202223289913U CN 218673113 U CN218673113 U CN 218673113U
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Abstract
The utility model discloses a high-purity metal smelting purification and directional solidification integrated device, belonging to the technical field of high-purity metal production; the device comprises a high-temperature purification furnace, wherein a smelting heating cavity is arranged in the high-temperature purification furnace; a solidification cooling cavity and a lifting device are also arranged in the high-temperature purification furnace; a cooling heat exchange device is arranged in the solidification cooling cavity; the lifting device is connected with a crucible; the crucible is driven to move between the smelting heating cavity and the solidification cooling cavity by a lifting device; adopt the purification device that purification and directional solidification purification combined together are smelted in vacuum, realized the production of low-cost, high-purity metal ingot casting, the limited problem of purity when having solved the big ingot casting of existing equipment production high-purity.
Description
Technical Field
The utility model belongs to the technical field of high-purity metal production, a purification and directional solidification integrated device is smelted to high-purity metal is related to.
Background
With the development of science and technology, the application of high-purity metal ingots is wider, the demand is increasing, and therefore, the method for obtaining the low-cost high-purity metal ingots is of great significance. In the traditional high-purity metal purification technology, different methods have great differences: the electrolytic refining method has long production period and unstable quality; the anion exchange method has complex process and unstable quality and is not beneficial to environmental protection; the zone-melting refining method has high energy consumption and low efficiency, and meanwhile, the methods cannot obtain larger ingots.
The large metal cast ingot can be obtained only by crucible melting, in the existing purification equipment of the high-purity metal cast ingot, a process method combining electron beam melting and directional solidification is mainly adopted, a melting furnace and a directional solidification furnace are respectively adopted for treatment aiming at melting and directional solidification, and when the high-purity metal after high-temperature melting is transferred out of the melting furnace and is sent into the directional solidification furnace in the turnover process, impurities are easily brought into the liquid high-purity metal, so that the purity of the high-purity metal is insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a purification and directional solidification integrated device are smelted to high-purity metal, and the limited problem of purity when solving the big ingot casting of existing equipment production high-purity.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
A high-purity metal smelting purification and directional solidification integrated device comprises a high-temperature purification furnace, wherein a smelting heating cavity is arranged in the high-temperature purification furnace; a solidification cooling cavity and a lifting device are also arranged in the high-temperature purification furnace; a cooling heat exchange device is arranged in the solidification cooling cavity; the lifting device is connected with a crucible; the crucible is driven by the lifting device to move between the smelting heating cavity and the solidification cooling cavity.
Furthermore, the solidification cooling cavity is positioned below the smelting heating cavity, and the bottom of the high-temperature purification furnace is connected with a lifting device; the upper part of the lifting device is connected with a crucible, and the crucible is connected with the bottom of the smelting heating cavity.
Further, the bottom of the crucible is connected with a temperature detection device.
Furthermore, the bottom of the crucible is connected with a lifting device through a graphite supporting structure.
Furthermore, a heat insulation structure is arranged at the bottom of the crucible.
Furthermore, the cooling heat exchange device is of a cooling water coil pipe structure, the cooling water coil pipe is arranged between the bottom of the smelting heating cavity and the bottom of the high-temperature purification furnace, and the lifting device and the crucible are located at the center of the cooling water coil pipe.
Further, the smelting heating cavity is enclosed by an upper heat preservation felt and a lower heat preservation felt; a heating device and a temperature measuring device are arranged in the smelting heating cavity; the smelting heating cavity is connected with a vacuum pump set.
Furthermore, the high-temperature purification furnace body is divided into an upper furnace chamber and a lower furnace chamber; the lower furnace cavity is connected with a screw rod lifter; the lower furnace chamber and the upper furnace chamber are closed and opened by a lead screw lifter; the upper heat preservation felt is positioned in the upper furnace cavity, and the lower heat preservation felt is positioned in the lower furnace cavity.
Furthermore, the upper heat preservation felt is connected with the top of the upper furnace cavity through an upper heat preservation felt hanging rod.
The utility model discloses produced beneficial effect for prior art does:
the utility model discloses purify the purification technology that combines together to current purification stove according to vacuum melting purification and directional solidification purification and improve, according to the heat preservation effect of heat preservation felt, lead to the cooling action of water copper coil pipe, form high temperature region and low temperature region in the furnace chamber. And (2) carrying out vacuum melting and purification on the metal material to be purified in the graphite crucible in a high-temperature area to meet corresponding requirements, then passing through a lifting mechanism, enabling the graphite crucible to gradually enter a low-temperature area from the high-temperature area for directional solidification and purification, keeping a large temperature gradient in the solidification process, completely solidifying and starting the lifting mechanism to lift the crucible to an initial position when the furnace temperature is reduced to be below 100 ℃. The metal material does not need to be converted into a container in the whole purification process, so that the operation difficulty is greatly reduced, and the possibility of bringing impurities is reduced.
Adopt the purification device that purification and directional solidification purification combined together are smelted in vacuum, realized the production of low cost, high-purity metal ingot casting, also realized guaranteeing that original purity makes the technology of the higher purity metal remelting ingot casting.
Drawings
FIG. 1 is a front view of the integrated device for melting, purifying and directional solidification of high purity metal of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2.
In the figure, 1-an upper furnace chamber, 2-a lower furnace chamber, 3-a support column, 4-a screw rod lifter, 5-a vacuum pump set, 6-an upper heat preservation felt, 7-an upper heat preservation felt suspender, 8-a heat exchange block, 9-a lower heat preservation felt, 10-a lower heat preservation felt support frame, 11-a second heat exchange block, 12-a heat preservation felt, 13-a graphite support column, 14-a graphite support block, 15-a heating electrode, 16-a heater, 17-a graphite crucible, 18-an infrared temperature measuring tube, 19-a thermocouple, 20-a copper coil, 21-a copper coil support frame and 22-a lifting device.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1 to 3, the present embodiment provides an integrated apparatus for refining and directional solidification of high purity metal, which comprises a high temperature refining furnace, the external whole of the high temperature refining furnace is the same as the existing high temperature refining furnace: the furnace is divided into an upper furnace chamber 1 and a lower furnace chamber 2, and the upper furnace chamber 1 is fixedly supported by a support column 3 at the bottom; and the upper furnace cavity 1 is connected with a vacuum pump set 5; the lower furnace chamber 2 can be opened and closed from the bottom of the upper furnace chamber 1 under the action of the screw rod lifter 4, and is used for feeding and discharging.
A smelting heating cavity, a solidification cooling cavity and a lifting device 22 are arranged in the high-temperature purification furnace consisting of the upper furnace cavity 1 and the lower furnace cavity 2; the smelting heating cavity is used for realizing vacuum high-temperature smelting of metal; the solidification cooling cavity is used for directional solidification of the molten metal; in the present embodiment, the lifting device 22 is a fork beam type lifter; the solidification cooling cavity is positioned below the smelting heating cavity, and the lifting device 22 is connected to the bottom of the lower furnace cavity 2; the upper part of the lifting device 22 is connected with a graphite crucible 17.
Specifically, the top of the upper furnace chamber 1 is connected with an upper heat preservation felt 6 with an open bottom through an upper heat preservation felt hanger rod 7, and a heater 16 is arranged in the upper heat preservation felt 6; the heater 16 is connected with a heating electrode 15; an infrared temperature measuring tube 18 is connected in the upper heat preservation felt 6 and used for monitoring the temperature in the upper heat preservation felt 6. The upper part of the lower furnace chamber 2 is connected with a lower heat preservation felt support frame 10; a lower heat preservation felt 9 is fixed on the lower heat preservation felt support frame 10; the lower heat-preservation felt 9 is connected with a heat exchange block 8; under the action of the screw rod lifter 4, the lower furnace chamber 2 is driven to move upwards, so that the lower heat preservation felt 9 and the upper heat preservation felt 6 can be buckled.
A copper coil 20 is arranged from the lower surface of the lower heat preservation felt support frame 10 to the bottom of the lower furnace cavity 2, the copper coil 20 is fixed in the lower furnace cavity 2 through a copper coil support frame 21, and the copper coil 20 is used for introducing cooling water to cool the area surrounded by the copper coil 20. The elevator 22 and graphite crucible 17 are located in the area surrounded by the cooling water coil.
Specifically, the bottom of the graphite crucible 17 is connected with a lifting device 22 through a graphite supporting block 14 and a graphite pillar 13. The bottom of the graphite crucible 17 is also connected with a thermocouple 19, a heat preservation felt 12 and a second heat exchange block 11; the graphite crucible 17 is connected with the lower heat preservation felt 9 in a sliding way, and after the graphite crucible 17 moves into the upper heat preservation felt 6, the heat preservation felt 12 is buckled with the lower heat preservation felt 9 in a sealing way. The heat exchange block 8 and the second heat exchange block 11 are both of the existing structure, and act together with the coil pipe, so that the directional flow of heat in the crucible from top to bottom is ensured in the process of solidifying the liquid metal in the crucible, and the liquid metal is ensured to realize the directional solidification.
After the charging is finished, the heat treatment process is started, the temperature in the area enclosed by the upper heat-preservation felt 6, the lower heat-preservation felt 9 and the heat-preservation felt 12 is monitored by the infrared temperature measuring tube 18, corresponding process gas is controlled, vacuum melting purification is started, after corresponding requirements are met, the graphite crucible 17 is lowered by the lifting device 22, whether liquid metal solidification starts or not is judged by the display temperature of the thermocouple 19 in the lowering process, after the solidification starts, the lifting device 22 is enabled to keep constant lowering speed and stably descends through the copper coil 20, and the solid-liquid interface of the metal material is kept at the same height until all solidification finishes directional solidification purification. When the furnace temperature is reduced to be below 100 ℃, the lower furnace chamber 2 is lowered to be separated from the upper furnace chamber 1 through the lead screw lifter 4, then the lifting device 22 is started, and the crucible is lifted to be discharged.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (9)
1. A high-purity metal smelting purification and directional solidification integrated device comprises a high-temperature purification furnace, wherein a smelting heating cavity is arranged in the high-temperature purification furnace; the device is characterized in that a solidification cooling cavity and a lifting device are also arranged in the high-temperature purification furnace; a cooling heat exchange device is arranged in the solidification cooling cavity; the lifting device is connected with a crucible; the crucible is driven by the lifting device to move between the smelting heating cavity and the solidification cooling cavity.
2. The integrated device for smelting, purifying and directionally solidifying high-purity metal according to claim 1, wherein the solidification cooling chamber is positioned below the smelting heating chamber, and the bottom of the high-temperature purifying furnace is connected with a lifting device; the upper part of the lifting device is connected with a crucible.
3. The integrated apparatus for high purity metal melting, purification and directional solidification of claim 2, wherein the bottom of the crucible is connected to a temperature detection device.
4. The integrated apparatus for smelting, purifying and directional solidifying of high purity metal according to claim 2, wherein the bottom of the crucible is connected to the lifting device through a graphite support structure.
5. The integrated apparatus for high purity metal melting, purification and directional solidification of claim 2, wherein the bottom of the crucible is provided with a thermal insulation structure.
6. The integrated device for smelting, purifying and directionally solidifying high-purity metal according to claim 2, wherein the cooling and heat exchanging device is a cooling water coil structure, the cooling water coil is arranged between the bottom of the smelting heating cavity and the bottom of the high-temperature purifying furnace, and the lifting device and the crucible are positioned in the center of the cooling water coil.
7. The integrated device for smelting, purifying and directionally solidifying high-purity metal according to claim 1, wherein the smelting heating cavity is enclosed by an upper heat-preserving felt and a lower heat-preserving felt; a heating device and a temperature measuring device are arranged in the smelting heating cavity; the smelting heating cavity is connected with a vacuum pump set.
8. The integrated apparatus for high-purity metal smelting, purifying and directional solidification of claim 7, wherein the high-temperature purifying furnace body is divided into an upper furnace chamber and a lower furnace chamber; the lower furnace cavity is connected with a screw rod lifter; the lower furnace chamber and the upper furnace chamber are closed and opened by a lead screw lifter; the upper heat preservation felt is positioned in the upper furnace cavity, and the lower heat preservation felt is positioned in the lower furnace cavity.
9. The integrated apparatus of claim 8, wherein the upper heat-retaining mat is connected to the top of the upper chamber by an upper heat-retaining mat hanger rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223289913.9U CN218673113U (en) | 2022-12-08 | 2022-12-08 | High-purity metal smelting purification and directional solidification integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223289913.9U CN218673113U (en) | 2022-12-08 | 2022-12-08 | High-purity metal smelting purification and directional solidification integrated device |
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| Publication Number | Publication Date |
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| CN218673113U true CN218673113U (en) | 2023-03-21 |
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| CN202223289913.9U Active CN218673113U (en) | 2022-12-08 | 2022-12-08 | High-purity metal smelting purification and directional solidification integrated device |
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| CN (1) | CN218673113U (en) |
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2022
- 2022-12-08 CN CN202223289913.9U patent/CN218673113U/en active Active
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