McDougall furnace

noun Mc·Dou·gall furnace \mə̇kˈdügəl-\

Definition of McDougall furnace

  1. :  a roasting furnace consisting of a vertical cylindrical shaft containing several superposed hearths over which ore entering at the top is made to pass consecutively by mechanical rabbles rotating around a central shaft

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Origin and Etymology of mcdougall furnace

after McDougall, 19th century British engineer

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