danpat, can't advise directly but I do know it can be done (even a caveman can do it???)
check out jason@mactallis' topic posted jan12/12 by titled "Ore for smelting" --> http://www.iforgeiro...e-for-smelting/ I definitely see a "common thread"
OR
google "smelting iron ore" and evolve your search from there
much luck,
Robert