Analyses of flow of solid materials at lower part of a blast furnace by furnace core shape measurements.
|
Accession number;05A0248818
|
| Title;Analyses of flow of solid materials at lower part of a blast furnace by furnace core shape measurements. |
| Author;
MATSUI YOSHIYUKI
(Kobe Steel, Ltd., Kakogawa Works, JPN)
TANAKA MUTSUMI
(Kobe Steel, Ltd., Kakogawa Works, JPN)
SAWAYAMA MUNEYOSHI
(Kobe Steel, Ltd., Kakogawa Works, JPN)
KITANO SHINJI
(Kobe Steel, Ltd., Kakogawa Works, JPN)
IMAI TAKASHI
(Shinkoen&m)
GOTO AKIYOSHI
(Shinkoen&m)
|
Journal Title;Current Advances in Materials and Processes
|
Journal Code:X0994A
|
ISSN:0914-6628
|
|
VOL.18;NO.1;PAGE.95(2005)
|
| Figure&Table&Reference;FIG.3, REF.3 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The reflection intensity of the .MU.-wave is measured from the furnace top at resuming normal operation after shut down of blowing to measure the core size of the furnace to monitor the flow of solid materials at the lower part of a blast furnace. The reflective intensity of the .MU.-wave is used for estimating the slip lines of the solid flow and the speed characteristics, and the following results are obtained. 1) At the peripheral part, the effects of flow to the raceway affect the solid flow, and the surface profile of the charges chan6ges to firm concave, and with lower reduction of the thickness, the inclination angle becomes larger, and the stacking angle at the medium part stays at a constant value. The reason for the phenomenon is that the angle is affected by the bosh angle and the chares are compressed to the horizontal direction and the reduction surfaces are pushed upward when the reduction is at the lower part of the furnace shaft. 2) The maximum main stress in the powder layer on the reduction surface at lower part of the shaft is in the horizontal direction, and the internal friction angle is set to be 42 degrees. 3) The particle flow in an operating furnace is characterized by the slip lines and the speed characteristic lines introduced by the theory of plasticity. The furnace core angle is 51 degrees, and pseudo-retaining region angle is estimated to be 80 degrees. |
|
|
|
Related Articles;
|
|
