发明申请
US20210214812A1 Method and apparatus for the production of cast iron, cast iron produced according to said method
有权
基本信息:
- 专利标题： Method and apparatus for the production of cast iron, cast iron produced according to said method
- 申请号：US17214401 申请日：2021-03-26
- 公开(公告)号：US20210214812A1 公开(公告)日：2021-07-15
- 发明人： Francesco Memoli , Cesare Giavani , Silvio Maria Reali , Kyle James Shoop
- 申请人： TENOVA S.P.A.
- 申请人地址： IT Milano
- 专利权人： TENOVA S.P.A.
- 当前专利权人： TENOVA S.P.A.
- 当前专利权人地址： IT Milano
- 优先权： IT102016000056295 20160531
- 主分类号： C21B13/14
- IPC分类号： C21B13/14 ; C21B13/00 ; C21B13/12 ; C21C1/08 ; C21C5/52 ; B22F9/08 ; C21B11/10 ; C22C33/02 ; C22C33/08 ; C22C37/00
摘要：
A method for the production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace includes the steps of preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of the carbon is combined with the iron to form iron carbide Fe3C; charging the charge of pre-reduced iron ore into the electric arc furnace; and melting the DRI charge to form liquid cast iron having at least 80% by weight of actual carbon content deriving from the carbon in the charge of pre-reduced iron ore, the melting step being in a reducing atmosphere and in a melting chamber of the electric arc furnace subjected to a positive internal pressure generated by the gases produced by reduction reactions that develop during melting.