DETECTION OF CHANNELING OF CHARGE IN VERTICAL CHUTE PART OF CHARGER FOR BLAST FURNACE

摘要

PURPOSE:To detect the deposition condition of the raw materials in a blast furnace exactly by detecting the falling rate and channeling position of raw materials for a blast furnace with the plural oscillation sensors mounted around the vertical chute of a raw material charger for the blast furnace. CONSTITUTION:Raw materials such as iron ore and coke are scattered and charged from the top bunkers 1, 2 of a blast furnace into the furance by a vertical chute 3 and a swiveling chute 4. Oscillation sensors 6, 7, 8, 9 are mounted at equal intervals around the chute 3 in this case. The falling rate S of the raw materials is calculated by the equation [ I ] from the value PK measured with each sensor in the stage of charging the raw materials, and the channeling position theta of the falling raw materials is calculated by using the equation [II] from the specific largest adjacent measured values Pi and Pi+1 among the values measured with the sensors. The deposition condition of the raw material in the furnace is detected from the values S and theta, and the charging of the raw materials is adequately regulated so as to attain the normal deposition condition, whereby the condition of the blast furnace is stabilized.