Patent ID: 7455810

Claim:
Metallurgical reactor for the production of cast iron comprising: a metal casing internally lined with refractory material, said casing having a lower zone which contains molten metal; a middle zone which contains slag; an upper zone essentially free from molten metal and slag; a first series of lances which inject a comburent gas and coal of suitable grain size into the lower zone; a second series of lances which inject a comburent gas into the middle zone; a heater for heating ferrous material to a high-temperature; and a duct in the form of a material chute which introduces ferrous material into the upper zone, said duct having an ore outflow opening in a bottom terminal part with said bottom terminal part located to introduce the high-temperature ferrous material into the upper zone by gravitational force, a cooling means for cooling said duct, and nozzles which are located in the bottom terminal part, said nozzles blowing compressed gas into the upper zone.