CONVERTER PROCESS CONTROL BY EXIT GAS SIGNALS Russian patent published in 2015 - IPC C21C5/30 

FIELD: metallurgy.

SUBSTANCE: invention refers to metallurgy, in particular, to a dynamic control method of blowing process in a converter during steel manufacturing including analysis of exit gas using the process model with static calculation of the process, and using a submodel process independent from this model with case monitoring of this process based on analysis of the converter exit gas. Using an independent from this model submodel process which, based on exit gas analysis, acts as the process observer, by an efficient combination of obtained signals of components, calculated are the observed results for the critical moment of time (t'_crit) of decarbonisation and for the end of blowing O₂ (t'_EoB), by which the oxygen content to the beginning of the process calculated preliminary by the process model is adjusted and conformed to actual conditions to the end of the decarbonisation time interval.

EFFECT: invention ensures an improvement of manufactured steel quality.

5 cl, 2 dwg