TUYER DEVICE FOR FURNACE

摘要

PURPOSE: A winnower apparatus for a blast furnace is provided to install a protective cover on a winnower part to be mounted in a blast furnace, thereby preventing damage to the winnower part due to hot metal or slag inside the blast furnace and improving the efficiency of blast furnace operation. CONSTITUTION: A winnower apparatus for a blast furnace comprises a winnower supporting part(20) and a protective cover. The winnower supporting part is inserted into a mounting hole(11) of the blast furnace to support the inner wall of the mounting hole. The protective cover is inserted into the mounting hole and installed at the winnower part which guides hot air to the inside of the blast furnace. The protective cover partially covers the winnower part protruding towards the inside of the blast furnace. The winnower part is inserted into the mounting hole and connected to a blow pipe. The winnower part includes a large winnower(31) protruding towards the inside of the blast furnace; and a small winnower(33) protruding towards the inside of the blast furnace from the inside of the large winnower. The protective cover includes a first cover covering up the protruding part of the large winnower towards the inside of the blast furnace; and a second cover covering up the protruding part of the small winnower towards the inside of the blast furnace. The first cover includes a first covering member covering up the protruding part of the large winnower towards the inside of the blast furnace; and a first filling member between the first covering member and the outer surface of the large winnower.