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Re: Hammer In? / bog ore?

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  • Darrell Markewitz
    Tim the problem is almost always on the actual iron content. You need in the range of 50% Fe as a minimum to actually get a bloomery furnace to produce any
    Message 1 of 1 , Dec 2, 2011
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      Tim

      the problem is almost always on the actual iron content. You need in the
      range of 50% Fe as a minimum to actually get a bloomery furnace to
      produce any metal.
      On quantity, there is a relationship between furnace size and minimum
      load before the internal environment starts to produce a bloom. Working
      with 25 - 30 cm internal diameter, that amount has proven to be at least
      8 kg. Ideally you should be using 20 - 30 kg ore of suitable quality.

      In the past it has proven most useful to provide a minimum quantity of
      high grade ore (something like broken taconite) to balance against an
      unknown local ore. This ensures a bloom for the public to see extracted
      and consolidated. A lower Fe ore typically makes too much slag, but if
      the team can keep taping successfully, this just makes for more
      (exciting) activity for the audience.

      Darrell

      PS - my own availability will depend largely on your set date, and if
      there is any travel money
      --
      ****************************************

      Darrell Markewitz - Artisan Blacksmith
      the Wareham Forge - Historic Reproductions & Architectural Forgings
      <http://www.warehamforge.ca>
      Interpretive Program Design - Norse Replicas / Viking Age Equipment
      <http://www.warehamforge.ca/NORSE-REPRO/norse.html>

      Blog : Hammered Out Bits

      Author of:
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      Forging the Viking Age (DVD)
      Experimental Iron Smelting from the Viking Age (CD-ROM)
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      all available at http://www.warehamforge.ca/video.html

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