Quick Fun Facts

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  CE Designer

  Bessemer Process
  Inventor = Sir Henry Bessemer
  Principle = Oxidation of impurities in molten pig iron to produce steel. Uses an egg shaped vessel called the Bessemer Converter. Air (containing oxygen) i introduced from the bottom of the converter and as it passes through the molten iron it oxidises impurities such as carbon, manganese and silicon. Carbon monoxide burns off in a blue falme and the rest of impurities form slag. the heat from oxidation keeps the mass molten during operation.
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  CE Designer

  Open Hearth Process
  The Open Hearth Process preceded the Bessemer Process in 1860.
  In this process the pig iron is mixed with steel scrap, limestone and other elements in an open bowl. Preheated fuel and air enter at one end of the bowl and ignite and is directed downward on the surface of the metal and melted. Carbon and other impurities are burnt out and steel is produced. This process is much slower but this makes it much easier to control and thus makes quality control easier.
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  CE Designer

  Anthropologists are of the view that the term 'Homo technologicus' (those who use technology), is a better way of defining humans, as opposed to 'Homo sapiens' (those who are wise).
  they belive we may not actually be as wiser than animals than we think we are but do some serious and sustained tool-making.