Ladle filler sand discharge device and continuous casting ladle casting starting method

Abstract

The invention relates to a ladle filler sand discharge device and a continuous casting ladle casting starting method. The ladle filler sand discharge device comprises a sliding plate, a vent plug and an argon supply component. The sliding plate is fixed into a movable frame of a ladle mechanism and provided with a vent plug hole. The vent plug is fixed into the vent plug hole. The argon supply component is communicated with the vent plug through an argon pipeline. The continuous casting ladle casting starting method comprises the steps of completing ladle preparation work, discharging ladle filler sand in a ladle completely, blowing argon into an upper nozzle of the ladle and starting casting of the ladle. By the adoption of the ladle filler sand discharge device and the continuous casting ladle casting starting method, the ladle filler sand can be effectively prevented from entering into a tundish, the quality of casting blanks is guaranteed, the free opening rate of the ladle is improved, and forced naked casting probability of the ladle is lowered, and the quality of molten steel is guaranteed.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a drainage sand discharge device and a continuous casting ladle opening method. Background technique [0002] With the continuous development of the iron and steel industry, the quality requirements of molten steel are getting higher and higher. At present, the ladle pouring method in the iron and steel industry is to use ladle drainage sand for drainage. In continuous casting production, in order to ensure the protective pouring of the ladle, the drainage sand drains the molten steel into the tundish. After this traditional method introduces the drainage sand into the tundish, the SiO in the drainage sand 2 、Cr 2 o 3 When it enters the tundish, it will affect the quality of the slab, and the drainage sand is easy to form a mixed solidified body of steel sand at the nozzle of the ladle, which reduces the self-opening rate of the ladle. If the ladle cannot be opened automat...

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Problems solved by technology

[0004] The drainage sand discharge device and the continuous casting ladle opening method provided by the application solve or partially solve the technical problems in the prior art that the drainage sand enters the tundish to affect the quality of the casting slab, the quality of the drainage sand is poor, and the technical problems of reducing the self-opening rate of the ladle , to avoid drainage sand from entering the tundish, improve the quality of molten steel in the tundish, ensure the quality of casting slab, improve the self-opening rate of ladle, reduce the probability of forced bare pouring of ladle, and ensure the technical effect of molten steel quality

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