Ma ji bo helandina sifrê di firna helandina induksîyonê de maçek hesin dikare were bikar anîn?

You can choose graphite crucible for melting copper in vexwarinê pêdivîkirin, 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.