Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 304
e metal is separated it melts, runs to the bottomof the smelting furnace, and is drawn off into mouldsmade of sand ; it is thus cast into short thick bars calledpigs, so we hear of pig-iron, and pig-lead. Iron is HEAVY METALS. 137 smelted from ironstone, which is mixed with coke andlimestone. The… … Blast furnace. smelting is conducted in what is called a blast furnace.When the metal has all been reduced, or melted, andrun down to the bottom of the furnace, a hole is made,out of which it runs into the moulds; this is calledtapping the furnace. 138 CHEMISTRY. Smelting is often confounded with…
Scientific recreations
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