Tuyere cooling system
AssigneeDofasco Inc.
InventorHerman Ohrt
Life of this patent
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Abstract
A tuyere cooling system which includes a coolant circuit for a body section and nose section. A valve is operable to connect the coolant circuits in series or to disconnect flows to the nose section of the tuyere so that if the nose of the tuyere tears during operation, the flow of coolant to the nose section of the tuyere may be cut off without affecting the overall operation of the blast furnace.
Claims9
A tuyere comprising a body section, a nose section and a cooling system, said cooling system including a first coolant passageway extending through said body section and having an inlet and an outlet, a second coolant passageway extending through said nose section and having an inlet and an outlet, and a valve assembly operable in a first condition to connect said coolant passageways in series with an outlet of one of said passageways connected to an inlet of another of said passageways so that coolant flows sequentially through said sections and operable in a second condition to inhibit flow through said second of said passageways whilst maintaining flow in said first coolant passageway and thereby cooling said body section.
Dependencies are inferred from the claim text.