8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

Any expert system of blast furnace should include the following models: the model to estimate material and gas distribution and their temperatures at the furnace top based on measurements by radioisotope profile scanner (or other type) and industrial IR-camera; conditions and dimensions of the furnace raceway; slag model which allow estimate the viscosity of primary, intermediate and final slags of blast furnace process. Practical realization of these models allows to prolong life of refractory lining, staves and tuyeres, increase in blast furnace productivity and reduction in production cost of hot metal. Reliability of Expert system instrumentation and accuracy of measured data during the long service time of expert system in blast furnace operating environment also discussed in the paper. Case studies of such systems operation are presented for blast furnace #3 at Tulachermet and blast furnace #5 at CherMK-Severstal, Russia for several years of their operation.