Argon blowing device capable of improving metallurgical ability of tundish and reducing flocculant flow of nozzle and use method thereof

Abstract

The invention discloses an argon blowing device capable of improving the metallurgical ability of a tundish and reducing the flocculant flow of a nozzle and a method. The argon blowing device comprises a hollow closed ring, a plurality of gas outlets for argon gas to flow out are uniformly formed in the closed ring at equal intervals, the closed ring is made of an oxygen burning tube and is provided with a gas inlet, the gas inlet is connected with one section of a ventilation pipeline approximate to a right angle, the ventilation pipeline is connected with an external argon gas pipeline, and a protective sleeve is arranged on the ventilation pipeline at a ladle tapping hole and is closely connected with the ladle tapping hole on a central axis. The method comprises the following steps: cleaning impurities inside the tundish before the tundish is online; putting the argon blowing device into the tundish in advance, arranging the argon blowing device at the bottom of the tundish and putting one argon blowing device at each of a steel hole and a temperature measuring hole; connecting the argon blowing device and the argon gas pipeline together after the argon gas pipeline is online; lifting the argon blowing device onto the lower surface of a tundish cover before ladle pouring, and continuous blowing the argon gas; pouring.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to an argon blowing device for improving the metallurgical capacity of a tundish and reducing nozzle flocculation and a method for using it. Background technique [0002] When the continuous casting machine casts low-carbon low-silicon steel and ultra-low-carbon aluminum-killed steel, if the molten steel is secondary oxidized, it is easy to cause the inner wall of the nozzle to be blocked by aluminum oxide, and a new baked nozzle needs to be replaced if it is light. Serious ones will cause downtime accidents. This not only causes a large amount of molten steel to be returned, waste of refractory materials, greatly increases the production cost, but also seriously affects the production rhythm of the entire production plant. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, ...

AI Technical Summary

Problems solved by technology

[0002] When the continuous casting machine casts low-carbon low-silicon steel and ultra-low-carbon aluminum-killed steel, if the molten steel is secondary oxidized, it is easy to cause the inner wall of the nozzle to be blocked by aluminum oxide, and a new baked nozzle needs to be replaced if it is light. Serious will cause shutdown accident

This will not only cause a large amount of molten steel to be returned, waste refractory materials, greatly increase the production cost, but also seriously affect the production rhythm of the entire production plant

Images