CN211921663U

CN211921663U - Device for high-speed centrifugal shearing deironing in molten aluminum

Info

Publication number: CN211921663U
Application number: CN201922407827.5U
Authority: CN
Inventors: 董芳桦; 李宇航; 柯昱成
Original assignee: Fujian Metal New Alu Tech Co ltd
Current assignee: Fujian Metal New Alu Tech Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-11-13
Anticipated expiration: 2029-12-28

Abstract

The utility model relates to a device that is arranged in aluminium liquid high-speed centrifugation to cut deironing, including the process chamber that is used for heating the fuse-element and the room of stewing, the inside stator that is equipped with of process chamber and through the rotatory rotor of motor drive or impeller, communicate each other through the overflow launder between the top of process chamber and the room of stewing. 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

Device for high-speed centrifugal shearing deironing in molten aluminum

Technical Field

The utility model relates to a device for high-speed centrifugal shearing deironing in molten aluminum.

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.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, the utility model aims to solve the technical problem that a device for high-speed centrifugal shearing deironing in aluminium liquid is provided, not only simple structure, convenient high efficiency moreover.

In order to solve the technical problem, the technical scheme of the utility model is that: 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, and a baffle is vertically and fixedly arranged in 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.

Compared with the prior art, the utility model discloses following beneficial effect has: 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 structural diagram of an embodiment of the present invention.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention 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.

The embodiment of the utility model provides an in, the treatment chamber is inside to be set firmly a vertical baffle 6, and the bottom has the clearance in vertical baffle and the treatment chamber, and two cavities are separated into with the treatment chamber to vertical baffle, and one is used for receiving the melting waste material, and another is used for using rotor or impeller to carry out deep fuse-element and cuts.

In an embodiment of the present invention, the overflow launder is located in the chamber where the melt is sheared.

The embodiment of the utility model provides an in, the interior bottom that the place cavity was cuted to the fuse-element is equipped with inert gas outlet 7, can let in gas when the fuse-element is cuted, makes the inclusion in the melting waste material float at the liquid level so that skimming the inclusion.

In the embodiment of the utility model, the openings of the treatment chamber and the standing chamber are both upward, and a baffle plate 8 is vertically and fixedly arranged in 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 embodiment of the present invention, one side of the baffle is the overflow chute side, and the other opposite side is the clean melt overflow outlet 9 disposed at the top of the standing 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 removing principle of the device is as follows: iron-rich intermetallics tend to nucleate on the wet side of the entrained native oxide film in the alloy melt, and these oxides often coalesce together and do not disperse well in the melt, impeding nucleation and growth of the iron-rich intermetallics and retarding their settling. Using this technique, such large oxide films can be easily dispersed into very fine and uniformly distributed individual particles that then serve as active nuclei for the formation of an iron-rich solid phase. An intermetallic phase α (Al 15 (FeMn) 3Si 2) is formed in the range of 645 ℃ to 595 ℃. Such intermetallic compounds are denser than molten aluminum and thus naturally settle. The Fe concentration in the liquid phase is thus reduced, and a clean melt is recovered. When a shear deferrization apparatus is used, intermetallic compounds are formed when flowing along the overflow launder and settle rapidly when reaching the resting chamber. The iron content of the treated melt is very stable and the natural tendency of the intermetallic particles to remain somewhat upward due to the gradual accumulation of intermetallic compounds and vertical flow near the outlet of the rest chamber, which can be solved by removing the deposits in situ and/or by using filters at the outlet of the clean melt overflow.

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 utility model is not limited to the above best mode, and any person can obtain other various forms of devices for high-speed centrifugal shearing iron removal in aluminum liquid under the enlightenment of the utility model. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims

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 for heating a melt, wherein 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; 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.

2. The device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in claim 1, is characterized in that: the overflow launder is located in the chamber where the melt is sheared.

3. The device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in claim 1, is characterized in that: an inert gas outlet is arranged at the inner bottom of 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 1, is characterized in that: the processing chamber is all up with the uncovered of room of stewing, and the indoor portion of stewing vertically sets firmly a baffle.

5. The device for removing iron in molten aluminum by high-speed centrifugal shearing as claimed in claim 4, wherein: 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.