Method of regulating the output of carbon monoxide in a metallurgical melting process
AssigneeSiemens Aktiengesellschaft
InventorThomas Matschullat
Life of this patent
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Abstract
In a method of regulating the output of CO in steel production, oxygen is introduced into a melt to remove carbon present, the actual value of the carbon stream evolved from the melt is determined, the intended value of the evolved carbon stream derived from the amount of oxygen introduced and the carbon content of the melt is calculated, intended and actual values are compared with one another and if the actual value is below the intended value, measures for preventing boiling are undertaken.
Claims18
A method of regulating the output of CO in steel production, in which oxygen is supplied to a melt to remove carbon present, the method comprising the steps of:
- determining the actual value of the carbon stream which is released from the melt,
- calculating the expected value of the carbon stream which results from the amount of oxygen fed in and the carbon content of the melt taking into account any other reactions, and
- comparing actual and expected values with one another, wherein in the case of the actual value being below the expected value carbon is supplied to the melt as measure for preventing boiling effects.
An apparatus for regulating the output of CO in a steel production plant, comprising:
- a vessel containing a melt of melted raw material covered on an upper surface by a slag layer,
- blow tubes arranged in said vessel for supplying oxygen or carbon to the melt,
- wherein the apparatus is operable to determining the actual value of the carbon stream which is released from the melt, to calculate the expected value of the carbon stream which results from the amount of oxygen fed in and the carbon content of the melt taking into account any other reactions, and to compare actual and expected values with one another, wherein in the case of the actual value being below the expected value carbon is supplied to the melt as measure for preventing boiling effects.
A steel production plant, comprising:
- a vessel containing a melt of melted raw material covered on an upper surface by a slag layer,
- blow tubes arranged in said vessel for supplying oxygen or carbon to the melt,
- wherein the apparatus is operable to determining the actual value of the carbon stream which is released from the melt, to calculate the expected value of the carbon stream which results from the amount of oxygen fed in and the carbon content of the melt taking into account any other reactions, and to compare actual and expected values with one another, wherein in the case of the actual value being below the expected value carbon is supplied to the melt as measure for preventing boiling effects.
Dependencies are inferred from the claim text.