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On-line degassing device for aluminium melt

A gas device and aluminum melt technology, applied in the field of aluminum melt on-line purification device, can solve problems such as unfavorable aluminum melt purification, gas suction phenomenon, melt tumbling, etc., to reduce technical production costs, improve gas utilization rate, Avoid the effect of entrainment and hydrogen absorption

Inactive Publication Date: 2011-03-09
SHANGHAI DIANJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of purified gas in the aluminum melt in the central body area of ​​the degassing box around the rotor is relatively high, while the content of purified gas in the melt in the corner area of ​​the degassing box is very small, which cannot ensure that the entire melt can fully contact with enough gas
In order to improve the gas distribution in the corner area, it is necessary to increase the rotor speed, which will cause the melt to churn and produce gas absorption, which is not conducive to the purification of the aluminum melt
In addition, the graphite rotor in the rotary blowing device is frequently replaced, which directly affects the production cost and economic benefits of the product

Method used

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  • On-line degassing device for aluminium melt
  • On-line degassing device for aluminium melt
  • On-line degassing device for aluminium melt

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Embodiment Construction

[0025] Such as figure 1 As shown, it is a preferred embodiment of the present invention, which mainly consists of an aluminum melt inlet 1, a flow channel 2, an acceleration pipeline 3, a gas mixing tube 4, a secondary mixing tube 5, a ceramic filter plate 6, and an electromagnetic pump 7. Composed of jet pipe 8, block 9, heat preservation and heating device 10, static chamber 11, tail gas collection device 12, melt outlet 13, etc. The flow channel 2, acceleration pipeline 3, gas mixing tube 4, and secondary mixing tube 5 are all made of ceramic tubes, which are sequentially connected by flanges, and heat preservation and heating devices 10 are provided around the gas mixing tube 4 and secondary mixing tube 5 . The front end of the runner 2 is a melt inlet 1, and the end is provided with a ceramic filter plate 6 of 10-50 mesh. An electromagnetic pump 7 is arranged outside the acceleration pipeline 3 . The gas mixing tube 4 is provided with a plurality of axially distributed...

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Abstract

The invention discloses an on-line degassing device of aluminium melt, which can effectively ensure fully mixed reaction between all aluminum melts and sufficient cleaned gas in a sealed space, enhances gas-liquid contact, shortens the dispersion course of hydrogen in the aluminium melt and achieves the aim of hydrogen removal efficiently. The device comprises a melt inlet, a runner, an acceleration pipeline, a gas mixed pipe, a secondary mixed pipe and a standing chamber which are successively connected with each other along the melt flow direction, wherein the secondary mixed pipe and the bottom part of the standing chamber are communicated; the melt inlet is arranged below the melt liquid level of the standing chamber; a tail gas collector is arranged above the standing chamber; and the inner wall of the gas mixing pipe is provided with multiple gas ejectors, the tail end of each gas ejector is connected with a device for inputting cleaned gas, and each gas ejector is provided with multiple orifices.

Description

technical field [0001] The invention relates to an online degassing device for metal melt, in particular to an online purification device for aluminum melt for removing gas from aluminum melt. Background technique [0002] In order to ensure the metallurgical quality of aluminum and its alloys, it is necessary to purify the refined aluminum melt, and reducing the hydrogen content in the aluminum melt is one of the main purposes of aluminum melt purification. At present, the dehydrogenation of aluminum melt is mainly based on the various dehydrogenation methods developed based on the theory of bubble floating. Hydrogen continuously diffuses into the bubbles, and escapes as the bubbles float up to the surface of the melt, so as to achieve the purpose of hydrogen removal. [0003] Through literature search, it is found that the current on-line dehydrogenation device for aluminum melt mainly adopts a rotary injection device, such as the Chinese utility model patent "on-line deg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B21/06C22B9/05C22B9/02
CPCY02P10/20
Inventor 孙会
Owner SHANGHAI DIANJI UNIV
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