Kodi chitsulo chachitsulo chingagwiritsidwe ntchito kusungunula mkuwa mu ng’anjo yosungunula?

You can choose graphite crucible for melting copper in chowotcha kutentha, 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.