The present invention relates to a braking system comprising a bogie capable of running in one direction, a vessel mounted on the bogie and capable of traveling in one direction, in which molten steel is contained, and a gas injector is mounted on the lower side, And a controller for controlling whether the stirring gas supplied to the gas injector is supplied or not. The refining equipment includes a step of placing a container containing molten steel below the decompression device, and a step of connecting the container and the decompression device Separating the vessel and the decompression apparatus from each other, separating the vessel from the decompression apparatus, decompressing the interior of the decompression apparatus, separating the vessel and the decompression apparatus, and injecting a stirring gas into the vessel to remove impurities from the vessel And refining equipment and refining capable of performing a plurality of different refining operations successively in one refining facility A method is presented.
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