Patent ID: 7537724
Filing Date: 2009-05-26
Classification: C21B,C21C,F27D

Abstract:
1. A metallurgical furnace comprising: an outer casing plate defining a casing of the metallurgical furnace and having an outside surface facing away from an inside of the metallurgical furnace; a cooling plate comprised of copper or a low-alloy copper alloy provided inward of the outer casing plate; a fixed-point securing element securing the cooling plate to the outer casing plate at a central region of the cooling plate; at least one coolant passage running inside the cooling plate; coolant pipe sections connected with the at least one coolant passage for enabling coolant to flow respectively in and out of the coolant passages, the coolant pipe sections leading to outside of the furnace cooling plate through the outer casing plate; the cooling plate comprising holding pipes thereon leading to the outside through the outer casing plate; second securing elements supported against the outside surface of the outer casing plate to allow movement of the cooling plate in both a vertical direction and a horizontal direction and to prevent movement of the cooling plate in a direction inward with respect to the furnace, the second securing elements securing the holding pipes; the holding pipes and the securing elements being comprised of a material with a greater strength than the copper or low-alloy copper alloy of the cooling plate; and each coolant pipe section of the coolant pipe sections being led to the outside of the outer casing plate inside a respective holding pipe of the holding pipes and each coolant pipe section and the respective holding pipe section are sized to provide a clearance between them.