Combined slag blocking wall for tundish

The utility model discloses a combined slag blocking wall for a tundish, which relates to the technical field of refractory materials for metallurgy, and comprises a flat plate type retaining wall which comprises a left flat plate slag blocking wall and a right flat plate slag blocking wall, the left flat plate slag blocking wall and the right flat plate slag blocking wall are respectively provided with a first left steel passing hole and a first right steel passing hole, and a special-shaped steady-flow slag blocking wall is connected between the left flat plate slag blocking wall and the right flat plate slag blocking wall. The special-shaped steady-flow slag blocking wall comprises a circular-truncated-cone-shaped flow stabilizer component and an arc-shaped weir wall component which are integrated, the weir wall component is arranged on the edge of the upper portion of the flow stabilizer component in a surrounding mode, the flow stabilizer component is provided with a frustum groove, and the weir wall com