The Shop > Metal Stuff
Oil fired crucible furnace
vtsteam:
And then I loaded the furnace up with split kindling to dry out and initial fire the refractory. It started to snow, though the temperature was just above freezing. Just a light snow. As I recall when it, the same thing happened when I went to fire the lining the first time I built this furnace -- as a cupola. :loco:
vtsteam:
Baking under way. The kindling has burnt down into a 6" layer of hot embers, and I'm adding larger split wood to build that up higher:
vtsteam:
An hour later, I have about a 10" bed of glowing embers so far:
vtsteam:
I decided this was enough baking for today and put a disk of 1/8" steel on top as a cover.
vtsteam:
Then blocked the tuyere opening, and sprinkled sand around the edge of the cover to seal it. This will convert all of the remaining brands in the furnace to charcoal, which I will have a use for when I start melting iron. The furnace should continue to bake for some time after.
Kind of curious experiment to see if powdered charcoal can substitute for plumbago in mold facings, and also whether (per Ironman video with plumbago and coke) it will convert steel to cast iron in a crucible.
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