Blast furnace abnormality determination device, blast furnace abnormality determination method, and blast furnace operation method

摘要

The abnormality determination device for a blast furnace according to the present invention includes an abnormality index calculation means for calculating an abnormality index indicating the degree of abnormality of the blast furnace, a ventilation index calculation means for calculating the ventilation index of the blast furnace, and an abnormality calculated by the abnormality index calculation means. The blast furnace is provided with a determination means for determining an abnormal state of the blast furnace by using the index and the ventilation index calculated by the ventilation index calculation means. The abnormality index calculation means may calculate the abnormality index using the output value of the shaft pressure sensor group installed around the furnace body of the blast furnace.