Patent ID: 6404800
Filing Date: 2002-06-11
Classification: C21C,F27B,F27D,Y02P

Abstract:
A charging material preheater for preheating charging material (60) which is to be charged into a furnace vessel (3) having a shaft (9) which is fixed in a frame structure (20) and which in its upper region has a closable feed opening (61) for the changing material (60) and a gas outlet (32) and in its lower region a discharge opening for the charging material (60) and a gas inlet, and shaft walls (32 to 37) that delimit a receiving space (62) for the charging material (60) to be heated, characterized in that at least one of the shaft walls (34 to 37) is subdivided into shaft wall portions (34/1, 34/2 to 37/1, 37/2) which are individually fixed in the frame structure (20) and are individually replaceable.