Pig Iron Manufacturing Apparatus
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Pig iron is the intermediate product of smelting iron ore with coke, usually with limestone as a flux. Pig iron has a very high carbon content, typically four percent, which makes it very brittle and not useful directly as a material except for limited applications.
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Iron and Steel IndustrySource
Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)
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