Shin za a iya amfani da ƙwanƙolin ƙarfe don narke jan ƙarfe a cikin tanderun narkewa?

You can choose graphite crucible for melting copper in injin wutar lantarki, or you can buy induction furnace ramming material yourself, and directly ram the furnace wall lining on the furnace wall to directly smelt copper. It is definitely not possible to use an iron crucible.