Composite seating brick with diversion trench

A plurality of flow guide tables are evenly arranged on the surface of a steel flowing hole in the upper portion of the composite seating brick in the circumferential direction, the flow guide tables protrude out of the inner side face of the steel flowing hole, a plurality of flow guide grooves with the same size are formed between the flow guide tables, and the cross section of each flow guide table is semicircular. The composite seating brick adopts a flow guide design, a plurality of strip-shaped flow guide tables are arranged at the head-on part, in contact with molten steel, of the upper part of the seating brick, and flow guide grooves formed among the flow guide tables can effectively control scouring of molten steel vortex to the seating brick; and meanwhile, a current molten steel vortex mode can be guided into a molten steel downstream mode, so that the friction force and the impact force are reduced, the scouring resistance of the seating brick body is improved, and the service life of the seating