Tank bottom replacing device of slag tank for steel making

The utility model provides a tank bottom replacing device of a slag tank, which is applied to the technical field of steel making equipment. The slag tank comprises a tank body (1) and a tank bottom (2); the tank bottom replacing device comprises a slag tank placing platform (3) and a moving trolley (4), wherein a slag tank supporting opening (5) is formed in the platform surface of the slag tank placing platform (3), and the lower part of the slag tank placing platform (3) is provided with a lifting component (6); the lifting component (6) is connected with a control component (7) which is capable of controlling the lifting of the lifting component (6); the tank bottom (2) is set into a structure that a gap exists between the ground (8) and the tank bottom when the tank body (1) is arranged at the slag tank supporting opening (4). According to the tank bottom replacing device of the slag tank for steel making provided by the utility model, the structure is simple, the replacing of the tank bottom of the slag tank can be conveniently and quickly completed, meanwhile, the replacing time is short, the difficulty is small, the operation efficiency of replacing the tank bottom of the slag tank is increased, and the labor intensity of an operator is reduced.