Nickel magnesium wire injection system and method thereof

A method of producing ductile liquid iron, comprising:

• melting scrap metal in a melt furnace to produce liquid iron;
• forming ductile liquid iron with an alloy;
• adding the ductile liquid iron to a pour furnace having a body, an inlet for receiving the ductile liquid iron, an outlet for dispensing the ductile liquid iron, and an access opening located in the body and remote from the outlet;
• checking a quality of the ductile liquid iron by comparing a magnesium content of the ductile liquid iron to a threshold;
• rejecting the ductile liquid iron if the magnesium content does not satisfy the threshold;
• positioning a portable injection system above the pour furnace and in alignment with the access opening;
• injecting a cored wire containing nickel magnesium through the access opening into an interior of the body of the furnace;
• reacting the nickel magnesium with the liquid iron in the body of the furnace;
• and
• increasing the magnesium content in the ductile liquid iron.

A system for treating liquid iron to restore its ductility, comprising:

• a pour furnace comprising a body having a top and a bottom, a pour box, an inlet for receiving liquid iron, an outlet defined in the pour box for dispensing liquid iron, and an access opening defined in the top and located remote from the outlet;
• a portable injector system comprising an injector drive motor disposed on a platform suspended above the top of the pour furnace and aligned with the access opening;
• and
• a spool of cored wire formed by an outer steel sleeve and a powder comprising nickel and magnesium within the sleeve, the spool of cored wire located on the platform;
• wherein, the injector drive motor receives the cored wire from the spool and injects the cored wire into the body of the pour furnace through the access opening at a feed rate at which the powder reacts with the liquid iron near the bottom but before the cored wire contacts the bottom of the pour furnace.