| US 7,455,810 B2 | ||
| Metallurgical reactor for the production of cast iron | ||
| Piergiorgio Fontana, Genoa (Italy); Giovanni De Marchi, Genoa (Italy); and Alessandro Molinari, Riomaggiore (Italy) | ||
| Assigned to SMS DEMAG S.p.A., (Italy) | ||
| Filed on May 13, 2004, as Appl. No. 10/844,362. | ||
| Claims priority of application No. GE2003A0033 (IT), filed on May 14, 2003. | ||
| Prior Publication US 2004/0227279 A1, Nov. 18, 2004 | ||
| Int. Cl. C21B 13/04 (2006.01) | ||
| U.S. Cl. 266—225 [266/241] | 17 Claims |
| 1. 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.
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