Chambers's encyclopædia; a dictionary of universal knowledge . Fig. 2.—Eefineiy. sides from melting. C are the tuj^eres in connectionwith the blowing-engine. The cast iron is meltedwith coke on the hearth, and a blast of air keptblowing over it, which causes its carbon to imitewith the oxygen of the air, and pass off as carbonicoxide gas. Oxygen also unites with silicon to formsiHca, and with iron to form the oxide. The silicaof the sand uniting with oxide of iron, produces aslag of silicate of iron. The refined metal is finallynm out in cakes on a bed of cast iron, kept coolby a stream of wat
Chambers's encyclopædia; a dictionary of universal knowledge . Fig. 2.—Eefineiy. sides from melting. C are the tuj^eres in connectionwith the blowing-engine. The cast iron is meltedwith coke on the hearth, and a blast of air keptblowing over it, which causes its carbon to imitewith the oxygen of the air, and pass off as carbonicoxide gas. Oxygen also unites with silicon to formsiHca, and with iron to form the oxide. The silicaof the sand uniting with oxide of iron, produces aslag of silicate of iron. The refined metal is finallynm out in cakes on a bed of cast iron, kept coolby a stream of water. Being only partially decar-bonised by this process, it is next broken up forthe puddling furnace. About 10 per cent, of ironis lost in the refinery. Fig. 3 shews a puddling furnace in longitudinalsection. A represents the hearth; F, thegrate orfireplace ; and C, the chimney, which has a damperat the summit, to regulate the draught. The grateis separated from the hearth by means of a bridge,D, which prevents the direct contact of the fuelwith the iron.
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisherlondo, bookyear1868
