Casting residue tank and assembling method thereof

The invention relates to the field of the metallurgical industry, and particularly discloses a casting residue tank and an assembling method thereof.The casting residue tank comprises a tank body and a grid frame arranged in the tank body, and the grid frame comprises a first grid frame and a second grid frame arranged above the first grid frame in a staggered mode; the first grid frame comprises first grid plates which are symmetrically arranged and second grid plates which are respectively clamped on the first grid plates, an annular supporting part is arranged in the tank body, flanges which are propped against the annular supporting part are arranged on the first grid plates and the second grid plates, and the annular supporting part is in smooth transition connection with the inner wall of the tank body; the problems that traditional liquid molten steel is solidified to form large-size slag steel lumps easily, and treatment and use are inconvenient are solved. 本发明涉及冶金行业领域，具体公开了一种铸余渣罐及其组装方法，包括罐体和设于罐体内的栅格架