Abnormality determination apparatus of a blast furnace, abnormality determination method of a blast furnace, and operation method of a blast furnace

摘要

An apparatus for determining abnormality in a blast furnace according to the present invention comprises: an abnormality indicator calculating means for calculating an abnormality indicator indicating an abnormality degree of a blast furnace; and determination means for determining an abnormal state of the blast furnace using the ventilation index calculated by the ventilation index calculation means. In addition, the abnormality index calculation means may calculate the abnormality index using the output value of the shaft pressure sensor group provided around the furnace body of a blast furnace.