CN110938749A - Device for removing iron in molten aluminum through high-speed centrifugal shearing and working method thereof - Google Patents
Device for removing iron in molten aluminum through high-speed centrifugal shearing and working method thereof Download PDFInfo
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- CN110938749A CN110938749A CN201911383096.3A CN201911383096A CN110938749A CN 110938749 A CN110938749 A CN 110938749A CN 201911383096 A CN201911383096 A CN 201911383096A CN 110938749 A CN110938749 A CN 110938749A
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- chamber
- melt
- molten aluminum
- standing
- shearing
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 31
- 238000010008 shearing Methods 0.000 title claims abstract description 27
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 16
- 239000000155 melt Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000002699 waste material Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 238000000703 high-speed centrifugation Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000005192 partition Methods 0.000 description 6
- 229910000765 intermetallic Inorganic materials 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 229910015136 FeMn Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/064—Obtaining aluminium refining using inert or reactive gases
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a device for removing iron in molten aluminum through high-speed centrifugal shearing, which comprises a treatment chamber and a standing chamber, wherein the treatment chamber is used for heating a melt, a stator and a rotor or an impeller which is driven by a motor to rotate are arranged in the treatment chamber, and the tops of the treatment chamber and the standing chamber are communicated with each other through an overflow launder. The device for removing iron in molten aluminum through high-speed centrifugal shearing has a simple structure, the melt is subjected to high-speed rotary shearing through the rotor or the impeller, and compact iron-rich solid particles are precipitated at the bottom of the standing chamber, so that a clean melt with low Fe concentration is separated.
Description
Technical Field
The invention relates to a device for removing iron in molten aluminum by high-speed centrifugal shearing and a working method thereof.
Background
Iron-rich intermetallics tend to nucleate on the wet side of the entrained native oxide film in the alloy melt, these oxides often coalesce together and do not disperse well in the melt, hindering nucleation and growth of the iron-rich intermetallics and retarding their settling, with slow settling rates affecting the recovery efficiency of the clean melt.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a device for high-speed centrifugal shearing deironing in molten aluminum and a working method thereof, which are simple in structure, convenient and efficient.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a device that is arranged in aluminium liquid high-speed centrifugation shearing deironing, includes the treatment chamber and the room of stewing that are used for heating the fuse-element, and the inside stator and the rotatory rotor or the impeller of motor drive that is equipped with of treatment chamber, communicate each other through the overflow launder between the top of treatment chamber and the room of stewing.
Preferably, a vertical partition plate is fixedly arranged in the treatment chamber, a gap is formed between the vertical partition plate and the inner bottom of the treatment chamber, the vertical partition plate divides the treatment chamber into two chambers, one chamber is used for receiving the molten waste, and the other chamber is used for deep melt shearing by using a rotor or an impeller.
Preferably, the overflow launder is located in the chamber where the melt is sheared.
Preferably, the inner bottom of the chamber in which the melt is sheared is provided with an inert gas outlet.
Preferably, the openings of the treatment chamber and the standing chamber are upward, a baffle is vertically and fixedly arranged in the standing chamber, and the bottom of the baffle is arranged above the opening of the standing chamber and above the opening of the top of the standing chamber.
Preferably, one side of the baffle is an overflow launder side, and the other opposite side is a clean melt overflow outlet arranged at the top of the rest chamber.
A working method of a device for removing iron in molten aluminum by high-speed centrifugal shearing comprises the following steps: (1) in the operation process, the motor transmits power to the rotor or the impeller through the shaft to drive the rotor or the impeller to rotate; (2) the molten waste enters the treatment chamber and is subjected to deep melt shearing by a rotor or an impeller; (3) the completely sheared melt discharged from the treatment chamber flows downwards along an overflow launder to the standing chamber; (4) the standing chamber is also a heating container and is used for keeping the processed melt at a controllable temperature so as to enable compact iron-rich solid particles to be precipitated at the bottom of the chamber; (5) the clean melt with low Fe concentration overflows from the clean melt overflow outlet.
Compared with the prior art, the invention has the following beneficial effects: the device for removing iron in molten aluminum through high-speed centrifugal shearing has a simple structure, the melt is subjected to high-speed rotary shearing through the rotor or the impeller, the completely sheared melt discharged from the treatment chamber flows downwards along the overflow launder to the standing chamber, and compact iron-rich solid particles are precipitated at the bottom of the standing chamber, so that the clean melt with low Fe concentration is separated.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1, a device for removing iron in molten aluminum by high-speed centrifugal shearing comprises a treatment chamber 1 and a standing chamber 2 for heating a melt, wherein a stator 3 and a rotor 4 or an impeller driven by a motor to rotate are arranged in the treatment chamber, and the tops of the treatment chamber and the standing chamber are communicated with each other through an overflow launder 5; the rotational speed of the motor is controllable and the rotational speed of the rotor or impeller may vary between 1000 and 10000 rpm.
In the embodiment of the invention, a vertical partition plate 6 is fixedly arranged in the treatment chamber, a gap is formed between the vertical partition plate and the inner bottom of the treatment chamber, the vertical partition plate divides the treatment chamber into two chambers, one chamber is used for receiving molten waste, and the other chamber is used for deep melt shearing by using a rotor or an impeller.
In an embodiment of the invention, the overflow launder is located in the chamber where the melt is sheared.
In the embodiment of the invention, the inner bottom of the chamber in which the melt is sheared is provided with an inert gas outlet 7, and gas can be introduced during shearing of the melt, so that impurities in the molten waste can float on the liquid surface to facilitate skimming of the impurities.
In the embodiment of the invention, the openings of the treatment chamber and the standing chamber are upward, a baffle plate 8 is vertically and fixedly arranged in the standing chamber, the bottom of the baffle plate is positioned above the opening of the standing chamber and the top of the baffle plate is positioned above the opening of the standing chamber; the baffle is used for obstructing scum, so that the scum is positioned on the liquid level between the baffle and the overflow launder, and the scum is convenient to skim.
In the present embodiment, one side of the baffle is the overflow launder side and the other opposite side is the clean melt overflow outlet 9 provided at the top of the rest chamber.
A working method of a device for removing iron in molten aluminum by high-speed centrifugal shearing comprises the following steps: (1) in the operation process, the motor transmits power to the rotor or the impeller through the shaft to drive the rotor or the impeller to rotate; (2) the molten waste enters the treatment chamber and is subjected to deep melt shearing by a rotor or an impeller; (3) the completely sheared melt discharged from the treatment chamber flows downwards along an overflow launder to the standing chamber; (4) the standing chamber is also a heating container, and the melt after processing is kept at a controllable temperature, so that compact iron-rich solid particles (such as iron-rich intermetallic compounds) are precipitated at the bottom of the chamber; (5) the clean melt with low Fe concentration overflows from the clean melt overflow outlet.
The iron removal principle of the apparatus is that iron-rich intermetallics tend to nucleate on the wetted side of the natural oxide film entrained in the alloy melt, which oxides generally coalesce together and do not disperse well in the melt, impeding nucleation and growth of the iron-rich intermetallics and delaying their settling, using this technique, such large oxide films can be easily dispersed into very fine and uniformly distributed individual particles which then act as active nuclei for the formation of iron-rich solid phases, an intermetallic phase α (Al 15 (FeMn) 3Si 2) is formed in the range of 645 ℃ to 595 ℃, which is denser than molten aluminum and therefore naturally settles.
When applied to aluminum alloy scrap having iron deposits, the high shear melt treatment accelerates nucleation generation and growth of the primary iron-rich intermetallic particles, thereby accelerating removal efficiency. Thereby reducing the treatment time, improving the recovery efficiency and promoting the all-metal circulation of the secondary aluminum alloy.
The device can provide macroscopic flow in the melt for distribution mixing, thereby ensuring uniform temperature and chemical composition, simultaneously carry out strong shearing near the tip to effectively disperse gas phase and solid phase in the melt, has minimum interference on the surface of the melt, can be used for removing iron in the aluminum alloy melt, and has the effect of degassing. Under steady state conditions, the discharge rate (clean melt overflow outlet flow) is controlled directly by the inlet volume of the melt. Therefore, the device can work in a continuous online mode, can also stop sucking the melt from the inlet, and works in a semi-continuous batch production mode, and has flexible use mode and high adaptability.
The invention is not limited to the best embodiment, and other various types of devices for high-speed centrifugal shearing iron removal in molten aluminum and working methods thereof can be obtained by anyone based on the teaching of the invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a device that is arranged in aluminium liquid high-speed centrifugation to cut deironing which characterized in that: the device comprises a processing chamber and a standing chamber, wherein the processing chamber and the standing chamber are used for heating a melt, a stator and a rotor or an impeller driven by a motor to rotate are arranged in the processing chamber, and the tops of the processing chamber and the standing chamber are communicated with each other through an overflow launder.
2. The device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in claim 1, is characterized in that: the inside vertical baffle that has set firmly of process chamber, vertical baffle and the interior bottom of process chamber have the clearance, and vertical baffle separates into two cavities with the process chamber, and one is used for receiving melting waste material, and another is used for using rotor or impeller to carry out deep fuse-element and cuts.
3. The device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in claim 2, characterized in that: the overflow launder is located in the chamber where the melt is sheared.
4. The device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in claim 2, characterized in that: an inert gas outlet is arranged at the inner bottom of the chamber where the melt is sheared.
5. The device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in claim 1, is characterized in that: the uncovered of process chamber and stewing chamber all up, and the standing chamber is inside vertically to be set firmly a baffle, and baffle bottom to the well top of stewing chamber, top are in the position more than uncovered.
6. The device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in claim 5, is characterized in that: one side of the baffle is an overflow trough side, and the other opposite side is a clean melt overflow outlet arranged at the top of the standing chamber.
7. The working method of the device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in any one of claims 1 to 6 is characterized by comprising the following steps of: (1) in the operation process, the motor transmits power to the rotor or the impeller through the shaft to drive the rotor or the impeller to rotate; (2) the molten waste enters the treatment chamber and is subjected to deep melt shearing by a rotor or an impeller; (3) the completely sheared melt discharged from the treatment chamber flows downwards along an overflow launder to the standing chamber; (4) the standing chamber is also a heating container and is used for keeping the processed melt at a controllable temperature so as to enable compact iron-rich solid particles to be precipitated at the bottom of the chamber; (5) the clean melt with low Fe concentration overflows from the clean melt overflow outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911383096.3A CN110938749A (en) | 2019-12-28 | 2019-12-28 | Device for removing iron in molten aluminum through high-speed centrifugal shearing and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911383096.3A CN110938749A (en) | 2019-12-28 | 2019-12-28 | Device for removing iron in molten aluminum through high-speed centrifugal shearing and working method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110938749A true CN110938749A (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911383096.3A Pending CN110938749A (en) | 2019-12-28 | 2019-12-28 | Device for removing iron in molten aluminum through high-speed centrifugal shearing and working method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN110938749A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202087795U (en) * | 2011-04-14 | 2011-12-28 | 柯东杰 | An aluminum melt online purifying device |
| CN106591583A (en) * | 2016-12-16 | 2017-04-26 | 中北大学 | Method and device for regeneration iron removal for scrap aluminium melt |
| CN106756140A (en) * | 2016-12-06 | 2017-05-31 | 江苏凯特汽车部件有限公司 | A kind of Strong shear stirs aluminium alloy melt composite handling arrangement and technology |
| CN107406907A (en) * | 2015-03-13 | 2017-11-28 | 伦敦布鲁内尔大学 | Purify alloy melt |
-
2019
- 2019-12-28 CN CN201911383096.3A patent/CN110938749A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202087795U (en) * | 2011-04-14 | 2011-12-28 | 柯东杰 | An aluminum melt online purifying device |
| CN107406907A (en) * | 2015-03-13 | 2017-11-28 | 伦敦布鲁内尔大学 | Purify alloy melt |
| CN106756140A (en) * | 2016-12-06 | 2017-05-31 | 江苏凯特汽车部件有限公司 | A kind of Strong shear stirs aluminium alloy melt composite handling arrangement and technology |
| CN106591583A (en) * | 2016-12-16 | 2017-04-26 | 中北大学 | Method and device for regeneration iron removal for scrap aluminium melt |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20200331 |