| 摘要 |
<p>PURPOSE: To rapidly stabilize operation by measuring liquid permeability distribution in the radial direction of blast furnace and directly charging oxygen and/or ferrous raw material to the defective region of liquid permeability so as to rapidly remove coke powder, unburned char, unmelted raw material powder, etc., piled in the furnace core. CONSTITUTION: A furnace core sonde 4 equipped with a liquid permeability measuring device 5 (optical fiber) is inserted from a blast furnace tuyere 2, the picture image measured at each part is subjected to data processing and then a liquid permeating quantity is calculated. When air and/or liquid permeability is deteriorated at the furnace core and its liquid permeating quantity is turned to 1/3 to 1/2 of the reference state, to the azimuth short in liquid permeating quantity, a required quantity of oxygen is intermittently supplied from an oxygen piping 6 arranged to the furnace core sonde 4, to burn and remove piled powder. Also as required, scrap, cementite, pig iron, etc., are supplied from a ferrous raw material charging device (chute) arranged in the range from tuyere part to belly part and the molten droplet therefrom can remove the piled powder.</p> |
