CN213680832U - Aluminum or aluminum alloy refining device - Google Patents
Aluminum or aluminum alloy refining device Download PDFInfo
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- CN213680832U CN213680832U CN202022396126.9U CN202022396126U CN213680832U CN 213680832 U CN213680832 U CN 213680832U CN 202022396126 U CN202022396126 U CN 202022396126U CN 213680832 U CN213680832 U CN 213680832U
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- aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model discloses an aluminium or aluminium alloy refining device, it includes leading filter, online gas removal equipment and rearmounted filter, the fuse-element export of leading filter with online gas removal equipment's fuse-element access connection, online gas removal equipment's fuse-element export with rearmounted filter's fuse-element access connection. The utility model discloses a filter equipment detach the mingled with in the aluminium liquid, and hydrogen in the aluminium liquid is detached to online gas removal equipment, need not to add concise agent, has solved and has done concise agent with the chlorate, produces the unable recycle problem of aluminium ash, has further saved the aluminium ash treatment cost that can not retrieve.
Description
The technical field is as follows:
the utility model belongs to aluminium or the concise field of aluminum alloy especially relates to an aluminium or aluminum alloy refining device.
Background art:
during the smelting and casting process of aluminum and aluminum alloy, the hydrogen atoms dissolved in the melt are easy to form bubbles after being separated out during casting and solidification, so that defects are generated in the cast ingot or casting of the aluminum and the aluminum alloy. Meanwhile, in the smelting process, the melt reacts with air to form oxides, the purity of the melt is reduced due to entrainment of the oxide into the melt, and if the oxide is not removed in the subsequent production, oxide inclusions are formed in the ingot or casting to influence the performance of the product. Therefore, in the production of aluminum and aluminum alloys, it is necessary to reduce the hydrogen content and remove inclusions by refining treatment. At present, a more common refining method is to add a proper amount of refining agent into an aluminum or aluminum alloy melt, match with refining gas (nitrogen or argon), blow the refining agent into the aluminum or aluminum alloy melt uniformly, take out hydrogen and slag inclusions in the aluminum or aluminum alloy melt, and gradually form a layer of separable scum on the surface of the aluminum or aluminum alloy melt, wherein the refining time is generally 40 minutes; and after refining, slagging off is carried out, and casting can not be carried out until no scum such as a mirror surface exists on the surface of the aluminum or aluminum alloy melt. The problems of the prior refining method are as follows: the refining agent is generally chlorine salt, aluminum ash scraped out after refining cannot be recycled, the treatment cost of hazardous waste is high, and environmental pollution is easily caused. In addition, the time required for refining by adding a refining agent is long, and the refining efficiency is low.
The utility model has the following contents:
an object of the utility model is to provide a need not to add concise agent, the degasification slagging-off effect is showing and efficient aluminium or aluminum alloy refining plant.
The utility model discloses by following technical scheme implement: the aluminum or aluminum alloy refining device comprises a pre-filter, an online degassing device and a post-filter, wherein a filter melt outlet of the pre-filter is connected with a degassing device melt inlet of the online degassing device, and a degassing device melt outlet of the online degassing device is connected with a filter melt inlet of the post-filter.
Further, the front filter and the rear filter have the same structure and respectively comprise a filter box shell, an unpurified storage cavity is arranged in the filter box shell and used for storing unpurified aluminum liquid or aluminum alloy liquid, and a filter plate clamping groove is formed in the lower part of the unpurified storage cavity; a filter plate is arranged above the filter plate clamping groove; a purified storage cavity is arranged on one side of the unpurified storage cavity and is used for storing purified aluminum liquid or aluminum alloy liquid; the bottom of the unpurified storage cavity is communicated with the bottom of the purified storage cavity through a purified melt flow channel; a filter melt inlet and a filter melt outlet are formed in the shell of the filter box, and the filter melt inlet is communicated with the unpurified storage cavity; the filter melt outlet is communicated with the purified storage cavity. The filter box shell is a corundum shell, and heat-preservation and heat-insulation ceramic castable is poured into the corundum shell to form the unpurified storage cavity and the purified storage cavity.
Further, a filter melt outlet is arranged below the filter box shell, the filter melt outlet is communicated with the bottom of the unpurified storage cavity or the bottom of the purified storage cavity or the purified melt flow channel, and after casting is finished, aluminum liquid or aluminum alloy liquid in the unpurified storage cavity and the purified storage cavity is discharged.
Furthermore, a channel steel support is arranged below the filter box shell, and the top of the channel steel support is fixedly connected with the bottom of the filter box shell.
Furthermore, the mesh number of the filter plates of the front filter is 30 meshes, and the mesh number of the filter plates of the rear filter is 40 meshes.
Further, the online degassing device comprises a box body, a first cavity and a second cavity are arranged in the box body side by side, and the bottom of the first cavity is communicated with the bottom of the second cavity through a communication port; a graphite rotor and a U-shaped silicon carbide rod are arranged in the first cavity and the second cavity, an upper cover is arranged above the box body, the graphite rotor is rotatably connected with the upper cover, and the top of the graphite rotor extends to the outside of the box body; the top of the graphite rotor is provided with a nitrogen inlet; nitrogen is uniformly blown into the aluminum liquid or the aluminum alloy liquid through the graphite rotor to form a large amount of dispersed bubbles, so that the aluminum liquid or the aluminum alloy liquid is fully contacted with the nitrogen, the bubbles absorb hydrogen in the aluminum liquid or the aluminum alloy liquid, and the bubbles are adsorbed, oxidized and slag inclusion is carried out and then are lifted to the surface of the aluminum liquid or the aluminum alloy liquid to form scum; the U-shaped silicon carbide rod is fixedly connected with the upper cover; the U-shaped silicon carbide rod heats the aluminum liquid or the aluminum alloy liquid, and the temperature drop of the aluminum liquid or the aluminum alloy liquid is reduced; the side wall of the box body is provided with a degassing device melt inlet, a degassing device melt outlet and a degassing device melt outlet, the degassing device melt inlet is communicated with the first chamber, and aluminum liquid or aluminum alloy liquid flows into the first chamber through the degassing device melt inlet to be degassed; the melt outlet of the degassing device is communicated with the second chamber, and the aluminum liquid or the aluminum alloy liquid which is degassed and purified in the second chamber flows out through the melt outlet of the degassing device; the melt discharge port of the degassing device is communicated with the top of the second chamber, and scum formed on the surface of the aluminum liquid or the aluminum alloy liquid is discharged through the melt discharge port of the degassing device; and a hydraulic lifting device is arranged on one side of the box body, and the telescopic end of the hydraulic lifting device is fixedly connected with the upper cover and used for lifting the upper cover.
Further, the aluminum or aluminum alloy refining device also comprises a low-level furnace, and a melt outlet of the low-level furnace is connected with a filter melt inlet of the pre-filter through a chute.
The utility model has the advantages that:
1. the utility model has the advantages that the air-blown nitrogen in the low-position furnace is used for refining and slagging off, the scum on the surface is removed, and for the aluminum alloy product with higher quality requirement, the air-blown nitrogen in the low-position furnace is helpful for preliminary deslagging and degassing of aluminum liquid or aluminum alloy liquid, the pressure of a preposed post-filtration and on-line degassing device is reduced, and the degassing and deslagging effects are improved as a whole;
2. impurities in the aluminum liquid are removed through the filtering device, hydrogen in the aluminum liquid is removed through the online degassing device, no refining agent is needed to be added, the problem that aluminum ash generated by using chlorine salt as the refining agent cannot be recycled is solved, and the treatment cost of the unrecoverable aluminum ash is further saved;
3. the hydrogen is removed by an on-line degassing device, the hydrogen removal rate reaches more than 60 percent or the hydrogen content is removed to be less than 0.15ml/100 g.
4. The pre-filter plays a role in preliminary purification and deslagging on the aluminum liquid or the aluminum alloy liquid, so that on one hand, deslagging pressure in the online degassing device is reduced, and on the other hand, excessive content of molten aluminum or aluminum alloy liquid slag is prevented, so that the surface of the aluminum liquid or the aluminum alloy liquid in the online degassing device is excessively sticky, and the deslagging frequency is excessively frequent; the post-filter plays a role in re-purifying the purified aluminum liquid or aluminum alloy liquid, and reduces finer slag inclusion in the aluminum liquid or the aluminum alloy liquid.
Description of the drawings:
FIG. 1 is a schematic view of the structure of an aluminum or aluminum alloy refining apparatus according to example 1.
FIG. 2 is a schematic view of the structure of an aluminum or aluminum alloy refining apparatus according to example 2.
FIG. 3 is a schematic view of a pre-filter or post-filter.
FIG. 4 is a schematic view of an on-line degassing apparatus.
The device comprises a front filter 1, an unpurified storage cavity 1.1, a filter melt inlet 1.2, a filter plate clamping groove 1.3, a purified melt flow channel 1.4, a channel steel support 1.5, a filter melt outlet 1.6, a filter melt outlet 1.7, a purified storage cavity 1.8, a filter box shell 1.10, an online degassing device 2, a graphite rotor 2.1, a U-shaped silicon carbide rod 2.2, a hydraulic lifting device 2.3, a degassing device melt outlet 2.4, a rear filter 3 and a low furnace 4.
The specific implementation mode is as follows:
example 1: as shown in fig. 1, 3 and 4, the aluminum or aluminum alloy refining device comprises a pre-filter 1, an online degassing device 2 and a post-filter 3, wherein a filter melt outlet of the pre-filter 1 is connected with a degassing device melt inlet of the online degassing device 2, and a degassing device melt outlet of the online degassing device 2 is connected with a filter melt inlet of the post-filter 3.
In the embodiment, the front filter 1 and the rear filter 3 have the same structure and respectively comprise a filter box shell 1.10, an unpurified storage cavity 1.1 is arranged in the filter box shell 1.10, a filter plate clamping groove 1.3 is arranged at the lower part of the unpurified storage cavity 1.1, and a filter plate is arranged above the filter plate clamping groove 1.3; one side of the unpurified storage cavity 1.1 is provided with a purified storage cavity 1.8; the bottom of the unpurified storage cavity 1.1 is communicated with the bottom of the purified storage cavity 1.8 through a purified melt flow channel 1.4; a filter melt inlet 1.2 and a filter melt outlet 1.7 are arranged on the filter box shell 1.10, and the filter melt inlet 1.7 is communicated with the unpurified storage cavity 1.1; the filter melt outlet 1.7 is communicated with the purified storage cavity 1.8. The filter box shell 1.10 is a corundum shell, and heat-insulating ceramic castable is poured into the corundum shell to form an unpurified storage cavity 1.1 and a purified storage cavity 1.8.
In the embodiment, a filter melt outlet 1.6 is arranged below the filter box shell 1.10, and the filter melt outlet 1.6 is communicated with the purified melt flow channel 1.4.
In this embodiment, filter box casing 1.10 below is equipped with channel-section steel support 1.5, and channel-section steel support 1.5's top and filter box casing 1.10 bottom fixed connection.
The working process and the principle of the pre-filter 1 or the post-filter 3 are as follows: place the filter on filter draw-in groove 1.3 and toast and preheat before the use, aluminium liquid or aluminium alloy liquid get into unpurified storage cavity 1.1 by filter fuse-element import 1.2, then last purification through the filter constantly to through purification after purification storage cavity 1.8 of purification of leading-in opposite side of fuse-element flow path 1.4 behind the purification, rethread filter fuse-element export 1.7 are derived. After casting is finished, aluminum liquid or aluminum alloy liquid in the unpurified storage cavity 1.1 and the purified storage cavity 1.8 is discharged through a filter melt discharge port 1.6.
In this embodiment, the number of filter plates of the pre-filter 1 is 30, and the number of filter plates of the post-filter 3 is 40.
In the embodiment, the online degassing device 2 comprises a shell, a first chamber and a second chamber which are arranged side by side are arranged in the box, and the bottom of the first chamber is communicated with the bottom of the second chamber through a communication port; a graphite rotor 2.1 and two U-shaped silicon carbide rods 2.2 are arranged in the first cavity and the second cavity respectively, an upper cover is arranged above the box body, the graphite rotor 2.1 is rotatably connected with the upper cover, and the top of the graphite rotor 2.1 extends to the outside of the upper cover; the top of the graphite rotor 2.1 is provided with a nitrogen inlet; nitrogen is uniformly blown into the aluminum liquid or the aluminum alloy liquid through the graphite rotor 2.1 to form a large amount of dispersed bubbles, so that the aluminum liquid or the aluminum alloy liquid is fully contacted with the nitrogen, the bubbles absorb hydrogen in the aluminum liquid or the aluminum alloy liquid, and the bubbles are adsorbed, oxidized and slag-clamped and then rise to the surface of the aluminum liquid or the aluminum alloy liquid to form scum; the U-shaped silicon carbide rod 2.2 is fixedly connected with the upper cover; the U-shaped silicon carbide rod 2.2 heats the aluminum liquid or the aluminum alloy liquid, and the temperature drop of the aluminum liquid or the aluminum alloy liquid is reduced; a degassing device melt inlet 2.6, a degassing device melt outlet 2.5 and a degassing device melt outlet 2.4 are arranged on the side wall of the box body, the degassing device melt inlet 2.6 is communicated with the first chamber, and the aluminum liquid or the aluminum alloy liquid flows into the first chamber for degassing through the degassing device melt inlet 2.6; the melt outlet 2.5 of the degassing device is communicated with the second chamber, and the aluminum liquid or the aluminum alloy liquid which is degassed and purified in the second chamber flows out through the melt outlet 2.5 of the degassing device; a melt discharge port 2.4 of the degassing device is communicated with the top of the second chamber, and scum formed on the surface of the aluminum liquid or the aluminum alloy liquid is discharged through the melt discharge port 2.4 of the degassing device; one side of box is equipped with hydraulic pressure elevating gear 2.3, and hydraulic pressure elevating gear 2.3's flexible end and upper cover fixed connection for promote the upper cover. The hydraulic lifting device 2.3 may be a hydraulic cylinder.
In the embodiment, the double rotors are adopted for degassing, the degassing efficiency reaches more than 60 percent, or the hydrogen content in the aluminum liquid or the aluminum alloy liquid is reduced to be less than 0.15ml/100g, and the four groups of U-shaped silicon carbon rods 2.2 can ensure that the temperature reduction of the aluminum liquid or the aluminum alloy liquid in the box body is less than 5 ℃.
Example 2: as shown in fig. 2, 3 and 4, the aluminum or aluminum alloy refining apparatus differs from example 2 in that a low-position furnace 4 is further included, and a melt outlet of the low-position furnace 4 is connected to a filter melt inlet of the pre-filter 1 through a chute. For aluminum alloy products with higher quality requirements, the low-level furnace is internally blown with nitrogen, which is beneficial to carrying out preliminary deslagging and degassing on aluminum liquid or aluminum alloy liquid, reduces the pressure of a preposed post-filtration and on-line degassing device, and improves the degassing and deslagging effects overall; for products with general quality requirements, furnace refining is not needed.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The aluminum or aluminum alloy refining device is characterized by comprising a pre-filter, an online degassing device and a post-filter, wherein a melt outlet of the pre-filter is connected with a melt inlet of the degassing device of the online degassing device, and a melt outlet of the degassing device of the online degassing device is connected with a melt inlet of the post-filter.
2. The aluminum or aluminum alloy refining apparatus according to claim 1, wherein the pre-filter and the post-filter are the same in structure and each include a filter box housing, an unpurified storage chamber is provided in the filter box housing, a filter plate clamping groove is provided at a lower portion of the unpurified storage chamber, and a filter plate is placed above the filter plate clamping groove; a purified storage cavity is arranged on one side of the unpurified storage cavity; the bottom of the unpurified storage cavity is communicated with the bottom of the purified storage cavity through a purified melt flow channel; a filter melt inlet and a filter melt outlet are formed in the shell of the filter box, and the filter melt inlet is communicated with the unpurified storage cavity; the filter melt outlet is communicated with the purified storage cavity.
3. An aluminium or aluminium alloy refining apparatus according to claim 2, wherein a filter melt outlet is provided below the filter housing, the filter melt outlet communicating with the unpurified storage cavity bottom or the purified melt flow passage.
4. An aluminium or aluminium alloy refining plant as claimed in any one of claims 2 or 3 wherein a channel steel bracket is provided below the filter box housing, the top of the channel steel bracket being fixedly connected to the bottom of the filter box housing.
5. An aluminium or aluminium alloy refining apparatus according to claim 2 or 3, wherein the pre-filter has 30 mesh filter panels and the post-filter has 40 mesh filter panels.
6. The aluminum or aluminum alloy refining device according to claim 1, wherein the online degassing device comprises a box body, a first chamber and a second chamber are arranged in the box body side by side, and the bottom of the first chamber is communicated with the bottom of the second chamber through a communication port; a graphite rotor and a U-shaped silicon carbide rod are arranged in the first cavity and the second cavity, an upper cover is arranged above the box body, the graphite rotor is rotatably connected with the upper cover, and the top of the graphite rotor extends to the outside of the box body; the top of the graphite rotor is provided with a nitrogen inlet; the U-shaped silicon carbide rod is fixedly connected with the upper cover; the side wall of the box body is provided with a degassing device melt inlet, a degassing device melt outlet and a degassing device melt outlet, and the degassing device melt inlet is communicated with the first cavity; the melt outlet of the degassing device is communicated with the second chamber; the melt outlet of the degassing device is communicated with the top of the second chamber; and a hydraulic lifting device is arranged on one side of the box body, and the telescopic end of the hydraulic lifting device is fixedly connected with the upper cover.
7. An aluminium or aluminium alloy refining apparatus according to claim 1 or 2 or 3 or 6, further comprising a lower furnace, the melt outlet of the lower furnace being connected to the filter melt inlet of the pre-filter by a chute.
8. An aluminium or aluminium alloy refining apparatus according to claim 4, further comprising a lower furnace, the melt outlet of the lower furnace being connected to the filter melt inlet of the pre-filter by a chute.
9. An aluminium or aluminium alloy refining apparatus according to claim 5, further comprising a lower furnace, the melt outlet of the lower furnace being connected to the filter melt inlet of the pre-filter by a chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022396126.9U CN213680832U (en) | 2020-10-23 | 2020-10-23 | Aluminum or aluminum alloy refining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022396126.9U CN213680832U (en) | 2020-10-23 | 2020-10-23 | Aluminum or aluminum alloy refining device |
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| Publication Number | Publication Date |
|---|---|
| CN213680832U true CN213680832U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022396126.9U Active CN213680832U (en) | 2020-10-23 | 2020-10-23 | Aluminum or aluminum alloy refining device |
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| CN (1) | CN213680832U (en) |
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- 2020-10-23 CN CN202022396126.9U patent/CN213680832U/en active Active
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