METHOD OF REPLACEMENT OF CHARGE VERTICAL PLATE COOLERS OF A BLAST FURNACE Russian patent published in 2004 - IPC

FIELD: ferrous metallurgy.

SUBSTANCE: the invention presents a method of replacement of charge vertical plate coolers of a blast furnace. The invention is pertinent to the iron and steel industry, in particular, to methods of repair of burned down charge vertical plate coolers of a blast furnace. The method of replacement of a cooler includes cutting of its jacket along a contour of a cooling plate, welding of metal sheets along the plate perimeter, indentation of the formed box by lifting jacks inside the furnace by Ѕ of the width of the sheets, burning the fixing bolts and cooling pipes out, installation of plugs on their places and weld-in a new patch of the jacket with cooling pipes, removal of mounting gusset plates and pushing through of the box by lifting jacks and welding the patch in, filling up the inner cavity of the new cooler with a refractory mixture. The total pressing force of the lifting jacks exceeds a lateral pressure of the charge materials. The invention allows to reduce a repair duration due to performance of works without a blowing-out of a charge and to increase service life of the blast furnace.

EFFECT: reduced duration of repair, increased service life of the blast furnace.

2 cl, 3 dwg