Patent ID: 11970748
Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 12:
13. A process to decarbonize iron-containing material, the process comprising:
(a) contacting an iron-containing material with a carbon dioxide (CO2) containing gas to at least partially decarbonize the iron-containing material;
(b) providing the at least partially decarbonized iron-containing material to a secondary steel process and contacting the iron-containing material with a CO2 containing gas to produce a decarbonized iron containing material having a carbon content lower than the decarbonized iron-containing material of step (a); and
(c) contacting the decarbonized iron containing material of step (b) with a CO2 containing gas under a reduced pressure to produce a decarbonized steel material having a carbon content lower than the decarbonized iron containing material of step (b);
wherein the decarbonized iron-containing material of step (b) and/or step (c) is a steel material having a carbon content of less than 0.5 wt %.