Process for production of elemental iron

Details Process for production of elemental iron Process for production of elemental iron

2011-04-26

2011-04-26

Wyszomierski, George (Department: 1733)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

C095S055000

Reexamination Certificate

active

07931731

ABSTRACT:
A process to prepare elemental iron by contacting an iron ore feed with a reducing gas at a pressure of between 1 and 10 bar to obtain iron and an off-gas includes preparing the reducing gas by performing the following steps: (a) partially oxidizing a mixture comprising a solid or liquid carbonaceous fuel and oxygen at a pressure of between 10 and 80 bar, thereby obtaining a gas comprising H2and CO; (b) removing CO2and H2S from the gas obtained in step (a) to obtain an intermediate gas comprising H2and CO; (c) supplying the intermediate gas obtained in step (b) to a H2-selective membrane to obtain a H2-rich permeate gas and a CO-rich retentate; and (d) heating H2-rich permeate to obtain a heated H2-rich permeate as the reducing gas.

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patent: 2009/0133535 (2009-05-01), Van Heeringen et al.
patent: 0018235 (1980-10-01), None
patent: 2261224 (1993-05-01), None

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