| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pulverized coal particle size distribution measuring method capable of simply and stably measuring the particle size distribution of pulverized coal sucked into a blast furnace. <P>SOLUTION: A pulverized coal particle size distribution measuring apparatus 1 is attached to a pulverized coal sucking apparatus for air-conveying pulverized coal 5 manufactured by a pulverized coal manufacturing apparatus 4 to a bag filter 7, storing the pulverized coal 5 collected by the bag filter 7 in a coal bottle 8, taking out the pulverized coal stored in the coal bottle 8 to a sucking tank 9, and air-conveying the pulverized coal 5 to a blast furnace tuyere 13 and configured to measure the particle size distribution of the pulverized coal 5 by a laser diffraction type particle size distribution measuring device 35. The pulverized coal particle size distribution measuring apparatus 1 includes: a suction nozzle 25 to be a sampling device attached to a conveyance pipe 19 of the pulverized coal 5 arranged between the bag filter 7 and the suction tank 9 to sample the pulverized coal 5 moving in the conveyance pipe 19; and a pulverized coal air conveyance device 27 for air-conveying the pulverized coal 5 sampled by the suction nozzle 25 to the laser diffraction type particle size distribution measuring device 35. <P>COPYRIGHT: (C)2012,JPO&INPIT |
