Method for removing residual iron in blast furnace and explosive drill
专利汇可以提供Method for removing residual iron in blast furnace and explosive drill专利检索，专利查询，专利分析的服务。并且PURPOSE:To remove the residual iron on the bottom of a blast furnace surely and virtually thoroughly by formation of runners of desired shapes by drilling a hole in the lower part of the bottom surface of the residual iron well in the furnace bottom through the outside wall of the furnace, packing explosive compds. for formation of a drilled hole in plural pieces of copper trays at the preceding end of the drilled hole and exploding the compds. CONSTITUTION:Prior to blowing out of a blast furnace 1, a hole 4 having about 40-100mm. diameter is drilled from a shell 3 of the outside wall of the furnace with inclination of an about 5-15 deg. at the point in bottom bricks 2 downward by about 100-500mm. than the bottom surface of a residual iron well 5. A drill provided with plural pieces, more preferably 2-3 pieces of copper trays 7 packed with explosive compds. 6 for formation of a drilled hole is disposed by means of a loading pipe 9 in the preceding end part of the drilled hole 4, and the preceding end is protected with an outside cylinder 8 made of a heat insulating material such as asbestos. Said trays 7 are so disposed that the axial lines alpha of their centers intersect at an angle theta at one upper point P. The position of said point P may be in the bricks 2 or on the surface of molten iron.，下面是Method for removing residual iron in blast furnace and explosive drill专利的具体信息内容。
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