Argon blowing and powder injection device and ladle refining furnace

Abstract

The embodiment of the invention discloses an argon blowing and powder injection device which comprises a gas source (17), a gas source channel control valve (16) connected with a gas outlet of the gas source (17), a closed pressure blanking hole (12) used for blanking, a gas mixing tank (10), a conveying pipe (8) and an electrode clamping chuck (1), wherein a blanking hole control valve (11) is installed at a discharge hole of the closed pressure blanking hole (12), the feeding hole of the gas mixing tank (10) is respectively connected with the gas source channel control valve (16) and the blanking hole control valve (11), a gas mixing tank channel control valve (9) is arranged at a discharge hole of the gas mixing tank (10), one end of the conveying pipe (8) is connected with a discharge hole of the gas mixing tank channel control valve (9), one end of the electrode clamping chuck (1) is connected with the other end of the conveying pipe (8), the electrode clamping chuck (1) is connected with an electrode tube (2) and supplies currents to the electrode tube (2), a central aperture used for conveying argon to the electrode tube (2) is formed inside the electrode clamping chuck (1), and the end of the electrode tube (2) is arranged below a liquid level of molten steel (7).

Description

technical field [0001] The invention relates to the field of metallurgy, and more specifically relates to an argon blowing powder injection device and a ladle refining furnace. Background technique [0002] LF furnace (Ladle Furnace), that is, ladle refining furnace, is the main refining equipment outside the furnace in steel production. LF furnace has rich functions such as deep desulfurization, deep deoxidation, removing non-metallic inclusions in steel to purify molten steel, changing the shape of inclusions, preventing secondary oxidation of molten steel, heating up and adjusting the temperature of molten steel, and adjusting the composition of molten steel. Iron and steel enterprises have been widely promoted and applied. [0003] At present, the heating of LF furnace adopts electric arc technology. When adding slag material and alloying operation in electric arc heating LF furnace, it usually uses high-level silo to discharge material and stir with large amount of arg...

AI Technical Summary

Problems solved by technology

During this process, the high-level silo is accompanied by dust, which deteriorates the working environment, and part of the material falls on the slag layer, which loses its original role and affects the accuracy and economy of the operation; due to the large amount of argon During the stirring process, the surface of the molten steel is exposed, and the molten steel absorbs nitrogen and increases the oxidation of the molten steel

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