|
Vol.35, No.2, 245 ~ 252, 1997
|
| Title |
| Research Paper - Pyrometallurgy : Characteristics of a Cold Fluidized Bed for Iron Ore Fines with a Wide Size Range |
| 정우창Uoo Chang Chung, 이일옥Il Ock Lee, 김행구Hang Goo Kim, 강흥원Heung Won Kang, 정원변Won Sub Chung, 정원배Won Bae Chung |
|
|
|
| Abstract |
| In this study, a cold fluidized bed for sinterfeed of wide size range 1-5 ㎜ has been comprehensively characterized in terms of minimum fluidization velocity, fluidized-bed regime, variation in pressure drop, degradation and holdup of axial direction using manometers and differential pressure transmitters(DPT). From the measurement of pressure drop(△P) in the reactor using 7 DPTs installed along the vertical length of reactor, it was found that the degradation of iron ore is almost in the early stage of fluidization, within 5 min. The amount and size distribution in each section between DPTs can be predicted from the measurements of △P. Calculating the solid holdup in the bed from the measurements, the variation in the bed height with ore weight can be also predicted. Therefore it is expected that the present study can provide some useful parameters which is critical in the determination of the reactor height for scale-up of a fluidized bed system. |
|
|
| Key Words |
|
|
 |
|
