METHOD OF ADMINISTRATING OPERATION OF BLAST FURNACE

PURPOSE:To stably execute blast furnace operations by determining secondary actions by taking the actions executed in the past specified period of time and the quantities thereof with respect to the quantities of the actions obtd. with each of administration items, thereby executing the operations. CONSTITUTION:The abnormal conditions of the blast furnace are evaluated and detected in accordance with the information obtd. from sensors with at least five items; slip and blow by, air permeability, heat level, balance of tapping and slag, and operating conditions. The abnormalities are inspected independently for each of the above mentioned respective items and the primary discrete action quantities for each of the action items are predetermined so as to avert the abnormalities according to the abnormalities. The primary action quantities are then corrected in accordance with the respective action items and action quantities executed before and the elapsed time of the actions and the secondary discrete actions corresponding to the abnormal conditions are determined. The operating conditions of the blast furnace are changed based on such actions as the actual actions. The blast furnace operations are stabilized by detecting the abnormal conditions of the blast furnace in such a manner and repeating the abovementioned operations.