C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
C21B 13/00 (2006.01) C21B 3/04 (2006.01)
Patent
CA 2554805
A steelmaking process is disclosed. The process includes producing molten steel and molten steelmaking slag in a steelmaking process, the steelmaking slag including iron units and flux units, and thereafter producing molten iron in a molten bath based direct smelting process using a substantial portion of the steelmaking slag as part of the feed material requirements for the direct smelting process. A direct smelting process is also disclosed. The process includes pre-treating ferrous material including steelmaking slag and thereafter direct smelting molten iron using the pretreated ferrous material as part of the feed material for the process.
La présente invention concerne un processus de fabrication d'acier. Ce processus consiste à produire de la fonte d'acier et un laitier de fabrication de fonte d'acier dans un processus de fabrication d'acier, ce laitier comprenant des unités de fer et des unités de flux puis, à produire de la fonte de fer dans un bain de fusion fondé sur un processus de fusion directe au moyen d'une partie substantielle du laitier utilisé comme partie du matériau d'alimentation requis pour ce processus de fusion directe. Cette invention concerne aussi un processus de fusion directe. Ce processus consiste à prétraiter un matériau ferreux comprenant un laitier de fabrication d'acier, puis de la fonte de fer obtenue par fusion directe au moyen de ce matériau ferreux prétraité utilisé comme partie de matériau d'alimentation de ce processus.
Batterham Robin John
Dry Rodney James
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Technological Resources Pty. Limited
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