A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams (1829)
Curtis, Thomas, fl. 1820 · London : Thomas Tegg · leaf 212
f oxygen, united in this ana-lysis, is under forty per cent. When the ore has been roasted it is taken tothe smelting or blast furnace, the lower part ofwhich is filled with either charcoal or coke; thecoke is always a fixed quantity, and the propor-tion of limestone added to the ore is accordmgto… … XiiutiinJiib/isJiril hiilli«iiiii.sTeiiff,!>.r/inipirit1e,.r,rrania;USiP. IRON MANUFACTURE. 193 of the furnace, is an opening for the introductionof the materials ; li tlie body of the furnace; Cthe place where tlie blast is introduced ; and Da cavity to receive the metal when released fromthe…
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