_Coke Smelting-1 - Chapter 9 Coke Smelting Dylan LaTorra...

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Click to edit Master subtitle style 5/10/10 Chapter 9: Coke Smelting Dylan LaTorra, Brandon Lipton, Kyle Logan, Corey Lovato
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5/10/10 What is coke smelting? l A way to produce iron from coal l Was refined by Abraham Darby in 1709 to be economically viable in England (but the process had been around much longer) l Considered a macroinvention, it used less coal than other methods
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5/10/10 About Coke Smelting l Main competition was from pig iron (made from charcoal), which dropped 63% in price from 1709-1850 l Wasn’t competitive until 1760 l Developed in England, then spread to the rest of Europe and America
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5/10/10 Developing Coke Smelting l Microinventions drove the development of coke smelting Small improvements to the overall technique helped move it along instead of big breakthroughs l Productivity growth was big for 1709- 1755 and the first half of the 19th century, but modest in between.
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5/10/10 Macro-Invention (First Phase) l Coke smelting started to be used in the 17th centuries, but the process was not economic Iron smelted with coal contained more sulfur l New impurities were introduced l Abraham Darby I Credited with invention of coke smelting
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5/10/10 Macro-Invention (First Phase), cont’d l
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