Ingabe i-iron crucible ingasetshenziswa ukuncibilikisa ithusi esithandweni somlilo esincibilikayo?

You can choose graphite crucible for melting copper in ukuchithwa kwesithando somlilo, 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.