High-efficiency and energy-conserving on-line degassing device

Abstract

The invention relates to an effective energy-saving online degassing unit, which consists of a processing box, a constant-speed permanent rotating magnet with controllable magnetic field intensity, a ventilating brick, an intelligent air supply system and an aluminum liquor heat-preservation heating device; the processing box is provided with a plurality of gerade even inner cavities; the middle of each inner cavity is spaced by a clapboard and the bottom parts of each inner cavity are communicated; the bottom part of one inner cavity is provided with the ventilating brick and the intelligentair supply system; the upper surface of the cavity is provided with a processing box cover; the side surface of the cavity is provided with an aluminum liquor inlet; the bottom part of another inner cavity is provided with the constant-speed permanent rotating magnet with controllable magnetic field intensity; the upper surface of the cavity is provided with the processing box cover; the U-shapedsilicon-carbon stick of an immersion heater is adopted by the heat-preservation heating device; a cylindrical carborundum or silicon nitride protection tube is arranged outside the silicon-carbon stick; the side surface of the cavity is a liquid outlet. The effective energy-saving online degassing unit of the invention has the beneficial effects of having an excellent slag-removing and degassing effect, saving cost, improving the purify of the aluminum liquor, reducing the loss, increasing the supply amount of inert gases, quickening the purifying speed of the aluminum liquor, being safe and applicable and having high automatization.

Description

technical field [0001] The invention relates to a purification treatment device for molten aluminum, in particular to an efficient and energy-saving online degassing device. Background technique [0002] Due to the presence of hydrogen and Al in the aluminum alloy after refining 2 o 3 Harmful substances such as inclusions are easy to form pores, looseness, inclusions and other defects in castings, which directly affect the physical properties, mechanical properties and performance of aluminum castings. Therefore, these harmful substances must be removed before casting. At present, the commonly used aluminum melt purification treatment technologies include rotary jet degassing purification method and ventilated brick degassing purification method. [0003] The rotary blowing degassing purification method is to chop the inert gas blown into the aluminum alloy melt through the rotating graphite rotor in the degassing treatment box, forming a large number of dispersed bubbles,...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a high-efficiency, energy-saving online degassing device to overcome the disadvantages of the prior art, such as poor slag removal and degassing effect, high investment cost, and the generated eddy currents that easily lead to gas supply pipeline accidents.

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