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AssigneePrimetals Technologies Austria GmbH
InventorsRobert MILLNER, Wolfgang STERRER
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A method for reducing a metal oxide-containing material in which a reduction gas that contains hydrogen is supplied to a reduction reactor, and a hydrogen-containing top gas is discharged from the reduction reactor. A sub-quantity of the top gas is supplied to gas burners, which are used in the preparation of the reduction gas, as a component of the fuel gas. If the content of hydrogen in the reduction gas and/or in the top gas increases, the content of water vapor in the fuel gas is increased. A device that performs the method includes a reduction reactor, a top gas discharge for discharging a top gas out of the reduction reactor, a preparation system which has at least one gas burner for preparing reduction gas, and a supply line for supplying a sub-quantity of the top gas to the at least one gas burner as a fuel gas component.
A process for reducing metal oxide-containing material, wherein a reduction gas containing at least hydrogen is fed to a reduction reactor containing the metal oxide-containing material, and a hydrogen-containing tops gas is discharged from the reduction reactor, and whreein portion of the tops gas is fed to gas burners used in the preparation of the reduction gas as a component of the fuel gas, and, in the event of an increase in the proportion of hydrogen in the reduction gas and/or in the tops gas, an increase in the steam content of the fuel gas is implemented.
An apparatus for reduction of metal oxide-containing material, comprising:
(canceled)
Dependencies are inferred from the claim text.