Online purification device for aluminum alloy melt

A technology of aluminum alloy melt and melt, which is applied in the field of non-ferrous metallurgy, can solve the problems of inclusion blockage, shorten the life of the filter plate, and fail to solve the problems of the spoiler falling off and entering the melt.

Pending Publication Date: 2019-07-16
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

This method increases the complexity of the degassing pool, and at the same time does not solve the problem that the spoiler is easily washed off and enters the melt
In addition, after the purification treatment of the existing technology, the melt is often filtered through the ceramic filter plate from top to bottom. In this way, especially when the filter plate with small pore size is used to capture fine inclusions, the voids are very easy to be included. Clogging shortens the life of the filter plate

Method used

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  • Online purification device for aluminum alloy melt
  • Online purification device for aluminum alloy melt

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Embodiment Construction

[0014] The aluminum melt flows into the purification chamber 15 from the melt inlet 7 from top to bottom at a flow rate of 400kg / h, and the temperature of the aluminum melt is 750°C; the diameter of the bottom of the purification chamber 15 is 400mm, and the liquid level height is 350mm; the dry refining agent is put into In the hopper 2, adjust the frequency conversion motor 1 to control the speed of the screw 3, so that the flow rate of the refining agent is 0.6kg / h, and the industrial argon gas with a purity of 99.9% is blown into the gas powder at an intake rate of 160ml / min and a gas pressure of 0.1MPa. Room 14, fully mixed to form gas-powder flow 5 into the offset rotary powder spraying device 6; the rotor diameter of the offset rotary powder spraying device 6 is 40 mm, 60 mm away from the bottom of the clean room, and the central axis of the rotor is offset from the center of the clean room 15 The distance is 100mm, the rotation speed of the rotor is 600rpm, the shearing...

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Abstract

The invention belongs to the field of nonferrous metal purification treatment, and relates to an online purification device for aluminum alloy melt. The device comprises a spiral feeding quantitativegas-powder mixing mechanism composed of a variable-frequency motor (1), a hopper (2), a screw rod (3) and a gas-powder mixing chamber (14); and a crucible (8) is divided into a purification chamber (15) and a filtration chamber (16) by a separation plate (13), the purification chamber and the filter chamber are in communication through a flow passage, a bias rotary powder spraying device (6) and abottom air blowing device are arranged in the purification chamber, and a ceramic foam filter plate (12) is arranged above the filter chamber (16). According to the device, online continuous composite refining of the aluminum melt can be realized, the refining quality and the purification efficiency of the aluminum alloy are greatly improved, and meanwhile, the problems of insufficient contact between a refining agent and the melt, unstable liquid level, purification blind area, low service life of the filter, inconvenience in replacement and the like are solved.

Description

technical field [0001] The invention belongs to the field of nonferrous metal metallurgy, in particular to a device for on-line purification of aluminum alloy melt. Background technique [0002] Melt purification is a key technology to ensure the metallurgical quality of aluminum alloy materials. The main purpose of purifying the aluminum alloy melt is to remove the hydrogen content and oxidized inclusions in the melt, thereby improving the quality of the aluminum alloy. The methods of purifying aluminum melt mainly include: solvent method, gas blowing method, rotary blowing method, etc. The commonly used refining agent is added to purify aluminum melt, although it can play a certain role in refining, but because the refining agent is easy to gather together, in order to achieve the effect, the amount added will be large. Therefore, the refining method of gas + solvent has also appeared. After searching, it was found that "a spraying device" participated in the patent app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/10C22B9/05C22B9/02C22B21/06
CPCC22B9/05C22B9/103C22B21/06C22B21/066Y02P10/20
Inventor 范超彭迪张炯
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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