Didier Engineering Gmbh

Bergwerksverband Gmbh

Edgar Hartkopf

Claus Flockenhaus

Heinrich Patalon

Peter Holz

A furnace for heating all sides of products such as metal slabs, billets, rough castings and the like includes a furnace chamber having a charging end and a discharging end. A plurality of carriages are positioned throughout the length of the furnace chamber to support products to be heated and are sequentially movable through the chamber from the charging end thereof to the discharging end thereof. Each carriage includes a support bench having extending upwardly therefrom support members to directly contact and support the products to be heated. A charging station is located adjacent the charging end of the furnace chamber for loading a product to be heated onto the carriage and introducing the thus loaded carriage into the furnace chamber, thereby displacing loaded carriages within the furnace chamber toward the discharging end and discharging a downstream-most loaded carriage from the discharging end of the furnace chamber. An unloading structure is located adjacent the discharging end for unloading a heated product from the carriage discharged from the discharging end. A return chamber extends from adjacent the unloading structure to the charging station to enable the unloaded carriage to be returned to the charging station. A heat insulation device within the return chamber reduces heat loss from the unloaded carriage while in the return chamber.

Furnace for heating slabs, billets, rough castings and the like

A recuperative coke oven includes at least one recuperator chamber arranged below an oven chamber. Hot undergrate firing exhaust gas is passed from the oven through the recuperator chamber. At least one elongated recuperator extends into the recuperator chamber. The recuperator includes an inner tube and a coaxially outer tube. The inner end of the inner tube is open, and the inner end of the outer tube is closed to define an annular chamber between the two tubes. Combustion air to be heated is introduced into the inner tube and passed therethrough. The combustion air then reverses direction and passes through the annular chamber and is thereat heated by the hot exhaust gas passing through the recuperator chamber. The heated combustion air is discharged from the annular chamber and passed to the heating flues of the oven. The length of the recuperator positioned within the recuperator chamber may be adjusted by relative sliding movement of the recuperator, to thereby change the available heat exchange surface of the recuperator and to thus regulate the temperature of the heated combustion air.

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Mulheim, Germany

Edgar Hartkopf