E/MJ : engineering and mining journal . i::jM FIG. 1. GENERAL ARRANGEMENT OF BLAST FURNACE AT COPPERHILL. ON WHICH PULVERIZED COAL EXPERIMENTS WERE JIADE were available, owing to the whole of the blast furnaceplant being supplied from a central blower observations indicated that the fuinace chargeis kept about 7 ft. deep, and the smelting zoneis from 2 to 3 ft. above the tuyeres. Blow holes formquickly after a fresh charge, but the amount of dustmade is about normal, namely, to per cent ofthe ore. The tuyeres require punching regularly, the methodbeing to remove th
E/MJ : engineering and mining journal . i::jM FIG. 1. GENERAL ARRANGEMENT OF BLAST FURNACE AT COPPERHILL. ON WHICH PULVERIZED COAL EXPERIMENTS WERE JIADE were available, owing to the whole of the blast furnaceplant being supplied from a central blower observations indicated that the fuinace chargeis kept about 7 ft. deep, and the smelting zoneis from 2 to 3 ft. above the tuyeres. Blow holes formquickly after a fresh charge, but the amount of dustmade is about normal, namely, to per cent ofthe ore. The tuyeres require punching regularly, the methodbeing to remove the tuyere cap, and, by introducinga rod, to stir up the ore in the vicinity of the was usual, when cleaning these tuyeres, for someloose ore to be blown out on the furnace floor in acondition which indicated that the ore close to thetuyeres had not been strongly heated. Through thetuyeres the charge appeared black, and usually therewas no appearance of fire until near the middle of thefurnace. Arrangements for conducting the e
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
