Loading material preheater for preheating the starting load (60) to be loaded in a furnace cupola (3), in particular of metal scrap, with a tank (9) fixed in a frame structure (20) that in its upper part it has a loading hole (61) that can be closed, for the starting load (60) as well as a gas outlet (32), and in its lower part an outlet hole for the starting load ( 60) as well as a gas inlet, and whose vertical tank walls (34 to 37) limit a housing space (62) for the starting load (60) that is to be heated characterized in that at least one of the walls of the tank (34 to 37) is divided into sections of wall of Cuba (34/1, 34/2 to 37/1, 37/2), which are individually fixed in the frame structure (20) and which can be replace individually.
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