CN103740946A - Device and method for online refining of aluminum melt - Google Patents
Device and method for online refining of aluminum melt Download PDFInfo
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- CN103740946A CN103740946A CN201310720284.7A CN201310720284A CN103740946A CN 103740946 A CN103740946 A CN 103740946A CN 201310720284 A CN201310720284 A CN 201310720284A CN 103740946 A CN103740946 A CN 103740946A
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Abstract
The invention discloses a device for online refining of an aluminum melt. The device comprises a melting furnace, a holding furnace and a flow channel connected between the melting furnace and the holding furnace, wherein the flow channel comprises an oblique flow channel and a melt pool, and the oblique flow channel is communicated with the melt pool. The melt pool is of a three-layer structure, wherein an inner layer is made of non-stick aluminum refractory material, a middle layer is made of heat preservation material, and an outer layer is of an iron bracket. An online refining method of the aluminum melt is refined by a refining pipe or refined by gas permeable bricks. Online refining is performed on the aluminum melt through the device and the method, so that the hydrogen content can be prevented from rising in the process of turning down the aluminum melt and the hydrogen content in the aluminum melt in the holding furnace can be effectively reduced.
Description
Technical field
The present invention relates to aluminum alloy strip foil production technical field, particularly a kind of Apparatus and method for for molten aluminium refine on line.
Background technology
hydrogen richness is one of necessary strict technical indicator of controlling of nearly all high-grade, precision and advanced aluminium converted products.Hydrogen Content in Molten Aluminum content is higher, and defects such as easily forming pore in foundry goods, loosen and be mingled with, directly affects physicals, mechanical property and the use properties of aluminium casting, so must carry out refining to molten aluminium, to reduce the hydrogen richness in molten aluminium.
The content of hydrogen in molten aluminium presents three rules: (1), more than 770 ℃, along with the increase of molten aluminium temperature, hydrogen richness sharply increases; (2) in molten aluminium process of setting, hydrogen richness sharply reduces, and the hydrogen richness in solid aluminium is few; (3), between molten aluminium temperature of solidification to 770 ℃, along with the increase of molten aluminium temperature, hydrogen richness is linear to be increased.
Molten aluminium temperature in smelting furnace generally between 730-760 ℃, the molten aluminium temperature in standing furnace generally between 715-740 ℃, by the molten aluminium in smelting furnace to while falling stove in standing furnace, the temperature of molten aluminium is generally more than 740 ℃.Therefore,, due to the impact of temperature, in smelting furnace, the hydrogen richness of molten aluminium is often much higher than the hydrogen richness of molten aluminium in standing furnace.Meanwhile, in the process of falling stove, molten aluminium rolls in chute, with airborne water vapour, chemical reaction can occur, and the hydrogen richness of molten aluminium is further raise.As can be seen here, in the process of falling stove, pour the hydrogen richness of the molten aluminium in standing furnace into by the hydrogen richness far above the original molten aluminium of standing furnace.
Due in the process of falling stove, can make the hydrogen richness of molten aluminium in standing furnace raise, in order to ensure the quality of products, in prior art, generally falling after stove, can to the molten aluminium in standing furnace, carry out refining at once.But, this way easily causes the quality fluctuation of aluminium casting, (from starting down stove to the bundle of falling furnace accretion) is generally at more than 30 minutes when more than 20 tons (smelting furnace the amount of molten aluminium) because the time of falling stove, within the time of falling stove, the molten aluminium of the high hydrogen richness of newly pouring into has probably flowed out standing furnace, thereby raise the hydrogen richness of whole molten aluminiums, and then had influence on the quality of aluminium casting.
Summary of the invention
The object of the present invention is to provide a kind of Apparatus and method for for molten aluminium refine on line, it can remove the hydrogen richness in molten aluminium effectively, and has avoided the hydrogen richness in molten aluminium in the process of falling stove further to raise.
To achieve these goals, the invention provides a kind of equipment for molten aluminium refine on line, it comprises smelting furnace, standing furnace and is connected in the chute between smelting furnace, standing furnace, it is characterized in that, described chute comprises oblique flow groove and melt pool, and described oblique flow groove runs through described melt pool.
Preferably, described melt pool is three-decker, and it comprises internal layer, middle layer and skin.
Further, the internal layer of described melt pool is not sticky aluminium refractory materials, and middle layer is lagging material, and skin is retort stand.
Preferably, described melt pool is three-decker at least.
Preferably, described melt pool is shaped as right cylinder, cubes or Polygons cylinder.
To achieve these goals, the invention provides a kind of method for molten aluminium refine on line, the refine on line method of molten aluminium is the refining of refining pipe or gas permeable brick refining.
Preferably, the step of described refining pipe refining is when stove starts, and stretches into refining pipe in described melt pool, in the process of falling stove, in described refining pipe, passes into rare gas element, until stove is complete.
Preferably, the step of described gas permeable brick refining is when stove starts, and in described melt pool, gas permeable brick is installed, and in the process of falling stove, by described gas permeable brick, passes into rare gas element, until stove is complete.
Further, described rare gas element is nitrogen or argon gas.
Accompanying drawing explanation
Fig. 1 is the present invention's structural representation of chute in one embodiment.
Fig. 2 is that Fig. 1 is along the cross-sectional view of A-A.
Embodiment
Below in conjunction with Figure of description and concrete embodiment, a kind of Apparatus and method for for molten aluminium refine on line of the present invention is made further and being explained, but this is explained and does not form the improper restriction to technical solution of the present invention.
Embodiment mono-
Fig. 1 and Fig. 2 have shown the structure of the equipment for molten aluminium refine on line of the present invention under a kind of embodiment.
As shown in Figure 1, the present invention relates to a kind of equipment for molten aluminium refine on line, it comprises smelting furnace, standing furnace and is connected in the chute between smelting furnace, standing furnace, and described chute is comprised of oblique flow groove 1 and melt pool 2, and described oblique flow groove 1 runs through described melt pool 2.Described oblique flow groove 1 comprises that one end of the first oblique flow groove 11 and the second oblique flow groove 12, the first oblique flow grooves 11 is connected in the export department of described smelting furnace, and the other end of described the first oblique flow groove 11 is connected in the import department of described melt pool 2.One end of described the second oblique flow groove 12 is connected in the export department of described melt pool 2, and the other end of described the second oblique flow groove 12 is connected in the import department of described standing furnace.Molten aluminium is flowed out by the export department of described smelting furnace, import department by the described melt pool 2 of described the first oblique flow groove 11 process flows into described melt pool 2, in described melt pool 2, carry out the refining of molten aluminium, molten aluminium flows out described melt pool 2 by the export department of described melt pool 2 after refining, by described the second oblique flow groove 12, flow into standing furnace again, completed the stove of molten aluminium from smelting furnace to standing furnace.
As shown in Figure 2, described melt pool 2 is three-decker, comprises internal layer, middle layer and skin, and internal layer 3 is not sticky aluminium refractory materials, and middle layer 4 is lagging material, and outer 5 is retort stand.Preferably, described melt pool 2 is cubes, and its vertical section is ∪ shape.
Further, described melt pool 2 also can be right cylinder or Polygons cylinder.
Embodiment bis-
The present embodiment provides the equipment utilizing in Fig. 1 to carry out the method for molten aluminium refine on line.The refine on line method of molten aluminium is the refining of refining pipe or gas permeable brick refining.
The step of described refining pipe refining is when stove starts, and in described melt pool 2, stretches into refining pipe, in the process of falling stove, in described refining pipe, leads to rare gas element, until stove is complete.
The step of described gas permeable brick refining is when stove starts, and in described melt pool 2, gas permeable brick is installed, and in the process of falling stove, by described gas permeable brick, passes into rare gas element, until stove is complete.
Further, described rare gas element is nitrogen or argon gas.
Preferably, described melt pool 2 is right cylinder, in the process of falling stove, by refining pipe, passes into nitrogen, and nitrogen flow is 20-3L/min, and refining runs through the whole process of falling stove.
Preferably, described melt pool 2 is cubes, in the process of falling stove, by refining pipe, passes into nitrogen, and nitrogen flow is 20-30L/min, and refining runs through the whole process of falling stove.
Preferably, described melt pool 2 is right cylinder, in the process of falling stove, by refining pipe, passes into argon gas, and nitrogen flow is 20-30L/min, and refining runs through the whole process of falling stove.
Preferably, described melt pool 2 is cubes, in the process of falling stove, by refining pipe, passes into argon gas, and nitrogen flow is 20-30L/min, and refining runs through the whole process of falling stove.
Preferably, described melt pool 2 is right cylinder, in the process of falling stove, by gas permeable brick, passes into nitrogen, and nitrogen flow is 20-30L/min, and refining runs through the whole process of falling stove.
Preferably, described melt pool 2 is cubes, in the process of falling stove, by gas permeable brick, passes into nitrogen, and nitrogen flow is 20-30L/min, and refining runs through the whole process of falling stove.
Preferably, described melt pool 2 is right cylinder, in the process of falling stove, by gas permeable brick, passes into argon gas, and nitrogen flow is 20-30L/min, and refining runs through the whole process of falling stove.
Preferably, described melt pool 2 is cubes, in the process of falling stove, by gas permeable brick, passes into argon gas, and nitrogen flow is 20-30L/min, and refining runs through the whole process of falling stove.
The present invention increases a small-sized melt pool on the routine chute of falling stove, the refine on line of molten aluminium in the process of falling stove of realization, can greatly reduce the hydrogen richness of newly pouring the molten aluminium in standing furnace into, by the 0.35-0.50ml/100g molten aluminium before refining, be down to the 0.20-0.30ml/100g molten aluminium after refining, effect is remarkable.
It should be noted that; the above-mentioned explanation of disclosed embodiment makes professional and technical personnel in the field for the present embodiment, to carry out multiple types like changing and revising apparently; this similar variation is all distortion that those skilled in the art can directly draw or be easy to just associate from disclosure of invention, all should belong to protection scope of the present invention.Therefore the present invention can not be subject to the restriction of this embodiment.
Claims (9)
1. for an equipment for molten aluminium refine on line, comprise smelting furnace, standing furnace and be connected in the chute between smelting furnace, standing furnace, it is characterized in that, described chute comprises oblique flow groove and melt pool, and described oblique flow groove runs through described melt pool.
2. the equipment for molten aluminium refine on line as claimed in claim 1, is characterized in that: described melt pool is three-decker, and it comprises internal layer, middle layer and skin.
3. the equipment for molten aluminium refine on line as claimed in claim 2, is characterized in that: the internal layer of described melt pool is not sticky aluminium refractory materials, and middle layer is lagging material, and skin is retort stand.
4. the equipment for molten aluminium refine on line as claimed in claim 1, is characterized in that: described melt pool is three-decker at least.
5. the equipment for molten aluminium refine on line as claimed in claim 1, is characterized in that: described melt pool be shaped as right cylinder, cubes or Polygons cylinder.
6. for a method for molten aluminium refine on line, it is characterized in that: the refine on line method of molten aluminium is the refining of refining pipe or gas permeable brick refining.
7. the method for molten aluminium refine on line as claimed in claim 6, it is characterized in that: the step of described refining pipe refining is when stove starts, and stretches into refining pipe, in the process of falling stove in described melt pool, in described refining pipe, pass into rare gas element, until stove is complete.
8. the method for molten aluminium refine on line as claimed in claim 6, it is characterized in that: the step of described gas permeable brick refining is when stove starts, and in described melt pool, gas permeable brick is installed, in the process of falling stove, by described gas permeable brick, pass into rare gas element, until stove is complete.
9. as claimed in claim 7 or 8 for the method for molten aluminium refine on line, it is characterized in that: described rare gas element is nitrogen or argon gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310720284.7A CN103740946B (en) | 2013-12-24 | 2013-12-24 | Device and method for online refining of aluminum melt |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310720284.7A CN103740946B (en) | 2013-12-24 | 2013-12-24 | Device and method for online refining of aluminum melt |
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| CN103740946A true CN103740946A (en) | 2014-04-23 |
| CN103740946B CN103740946B (en) | 2015-04-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745114A (en) * | 2017-10-24 | 2018-03-02 | 云南云铝涌鑫铝业有限公司 | The metaideophone method of converted injection device and alloy solution |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201621959U (en) * | 2009-12-17 | 2010-11-03 | 浙江东轻高新焊丝有限公司 | Aluminium alloy melt revolving furnace refining device |
| CN102994777A (en) * | 2012-12-28 | 2013-03-27 | 云南铝业股份有限公司 | Electrolytic aluminum liquid purification method for producing ultra-wide double-zero aluminum foil |
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2013
- 2013-12-24 CN CN201310720284.7A patent/CN103740946B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201621959U (en) * | 2009-12-17 | 2010-11-03 | 浙江东轻高新焊丝有限公司 | Aluminium alloy melt revolving furnace refining device |
| CN102994777A (en) * | 2012-12-28 | 2013-03-27 | 云南铝业股份有限公司 | Electrolytic aluminum liquid purification method for producing ultra-wide double-zero aluminum foil |
Non-Patent Citations (1)
| Title |
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| 贵广臣等: "透气砖精炼系统在铝保温炉中的应用", 《耐火材料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745114A (en) * | 2017-10-24 | 2018-03-02 | 云南云铝涌鑫铝业有限公司 | The metaideophone method of converted injection device and alloy solution |
| CN107745114B (en) * | 2017-10-24 | 2020-02-18 | 云南云铝涌鑫铝业有限公司 | Transfer device and transfer method of alloy solution |
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| CN103740946B (en) | 2015-04-01 |
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