Abstract: A method for manufacturing molten pig iron is disclosed which comprises:forming a packed bed of coke in a vertical furnace having a charging port in an upper portion thereof for charging raw materials and discharging gases, one or more primary tuyeres in its lower portion, and one or more secondary tuyeres in a wall of the furnace at a level above the primary tuyere, the packed bed of coke extending higher than the level of the primary tuyere;forming a packed bed of scrap and iron ore atop the packed bed of coke to a level which extends above the secondary tuyere; andblowing an oxidizing gas through the primary tuyere and the secondary tuyere to melt and reduce the scrap iron and iron ore.

Abstract: A lining apparatus provided with a foldable spray pipe comprising an elevatable vertical support strut supported by a frame, a bifurcated support strut having the upper end thereof connected to the lower end of the elevatable vertical support strut, the bifurcated strut comprising a pair of parallely extending strut elements which define an arm storing space therebetween opening at both sides, a pipe supporting arm foldably connected to the lower end of the bifurcated strut and encasing a spray pipe therein and a protective path formed in each strut element of the bifurcated strut allowing a plurality of lines including a material supply line to pass therethrough.