The invention discloses a slab submersed
nozzle controlling flowing of
metal fluid. The slab submersed
nozzle comprises a fire-resistant material
pipe,
metal liquid outlets and a flow control
pyramid; the fire-resistant material
pipe is cylindrical, the upper end of the fire-resistant material
pipe is open, the bottom end of the fire-resistant material pipe is sealed, the left and the right of the position, having a certain distance from the bottom, on the side face of the fire-resistant material pipe are symmetrically provided with the two
metal liquid outlets, and the flow control
pyramid is arranged in a bottom groove of the fire-resistant material pipe; by reasonably combining different groove depths, different
corner angle numbers of the flow control
pyramid, the height of the flow control pyramid, the bottom edge length of the flow control pyramid, the included angel between bottom edges, and shapes of flow grooves formed in the pyramid surfaces, flowing of the metal liquid discharged through the metal liquid outlets is regulated, different flowing states are obtained, and therefore
molten pool and liquid surface fluctuation conditions in a crystallizer are effectively controlled.