GAS BLOWING TUYERE FOR MELTING AND REFINING FURNACE OR REACTION VESSEL

• Main Authors: OGASAWARA KAZUNORI, TACHIBANA RINZOU, KUWAYAMA MICHIHIRO
• Format: Patent
• Language: English
• Published: 07.06.1985
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; METALLURGY; METALLURGY OF IRON; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TRANSPORTING; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

PURPOSE:To decrease fluctuation in the blowing rate of gas and to perform stable operation with a tuyere loaded with plural pieces of small-diameter metallic pipes to be passed with gas in refractories by interposing a heat insulating layer between the small-diameter metallic pipes and the refractories. CONSTITUTION:A steam chamber 2 playing the role of a surge tank for the supplied gas is connected to the top end of a gas supply pipe 1. Plural pieces of small-diameter metallic pipes 4 are loaded into refractories consisting of MgO-C as a base metal provided above the chamber 2 and the bottom ends of the pipes 4 are integrally coupled to the chamber 2 so as to open into the cham- ber 2. On the other hand, the top ends of the pipes 4 are opened in the furnace or the vessel at the top end of the tuyere and a heat insulating layer 5 is interposed between the outside surface of the pipes 4 and the refractories 3.