icon, iron or steel in order to give them cer- tain properties. spiegel iron and ferro-manganese are produced in vertical shaft furnaces, Pig iron intended for the manufac- ture of structural steel is produced by called blast furnaces. The furnaces employed in the various the use of coke as a fuel… … mirror) derives its name from the nu- A BLAST FURNACE TOP, SHOWING CHARGING merous mirror-like reflecting surfaces APPARATUS, STOCK DISTRIBUTOR, ETC. which it shows in the fracture. It is an fuel is brought in direct contact with the iron containing from 6 per cent, to 20 substance to be operated…
Engineering
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