Method of recovering CO-rich exhaust gas in refining of metal
AssigneeKawasaki Steel Corporation
InventorsMikio Kodaka, Hitoshi Morishita, Hajime Bada, Fumio Sudo
Life of this patent
Estimating the term…
Abstract
In order to enhance the CO concentration contained in exhaust gas generated during the refining of metal and to recover the CO as an energy source, granular limestone is blown into molten iron containing at least 0.3% of carbon through a tuyere together with a refining gas, and CO.sub.2 generated by the decomposition of the limestone is reacted with carbon contained in the molten iron to form CO, and the resulting CO is recovered.
Claims7
A method of recovering CO-rich exhaust gas in refining of metal, comprising blowing granular limestone together with a carrier gas into a molten iron having a carbon concentration of at least 0.3% and kept in a metal-refining vessel through a tuyere located beneath the bath surface to generate CO, and recovering the CO-containing exhaust gas in an exhaust gas-recovering apparatus.
Dependencies are inferred from the claim text.