High cleanliness molten steel production method and refining device

A high cleanliness molten steel refining device, comprising:

• a first container adapted to receive molten steel poured from a molten steel supply device;
• and
• a droplet forming device positioned within the first container and comprising a second container comprising:
• a sidewall separate from any sidewall of the first container;
• and
• a droplet forming portion having a plurality of droplet holes for forming molten steel into droplets at a central part of the second container,
• wherein the first container is a tundish,
• wherein the droplet forming device is within a tundish body of the tundish, and wherein the droplet forming device is adjacent to a lower region where molten steel is poured,
• wherein the droplet forming device further comprises a molten steel accommodating portion at a lower portion of a molten steel pouring region in the tundish body to accommodate the molten steel poured from the molten steel supply device and is configured to move the poured-in molten steel to the droplet forming portion via the molten steel accommodating portion,
• wherein a portion of the sidewall of the second container adjacent to the molten steel accommodating portion is formed lower than a portion of the sidewall on another side.

A high cleanliness molten steel refining device comprising:

• a tundish including a tundish body and a tundish cover for covering a side of the tundish body;
• and
• a droplet forming device comprising:
• a molten steel accommodating portion formed by blocking the tundish body with a first weir;
• and
• a droplet forming portion provided adjacent to the molten steel accommodating portion in the tundish body comprising:
• a container comprising:
• a sidewall separate from any sidewall of the tundish;
• and
• a droplet forming portion having a plurality of droplet holes for forming molten steel into droplets at a central part of the container.