| 摘要 |
PURPOSE: A cover of an injection cooling type blast furnace is provided to apply an injection cooling rapidly removing thermal stress by arranging nozzles at a constant space, thereby minimizing cracks, pores, and deformation. CONSTITUTION: A cover(100) of an injection cooling type blast furnace is installed to cover the top of the blast furnace and includes an inner cover(119) and an outer cover(114) which are mutually spaced, and an arc-shaped blast furnace cover body. The refractory is attached to the lower side of the cover body, thereby block heat of molten iron. A spray bar(130) jets cooling water to an entire upside of the inner cover. A cooling water distributing pipe(116) fixes each spray bar, distributes cooling water, and supplies the same.
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