|
|
|
| THE EFFECT OF THE THICKNESS AND THE THERMAL CONDUCTIVITIES OF THE REFRACTORY LININGS IN THE BLAST FURNACE BOTTOM ON THE TEMPERATURE FIELD OF THE BOTTOM |
| WAN SHU-MING Institute of Chemical Metallurgy; Academia Sinica |
|
Cite this article:
WAN SHU-MING Institute of Chemical Metallurgy; Academia Sinica. THE EFFECT OF THE THICKNESS AND THE THERMAL CONDUCTIVITIES OF THE REFRACTORY LININGS IN THE BLAST FURNACE BOTTOM ON THE TEMPERATURE FIELD OF THE BOTTOM. Acta Metall Sin, 1959, 4(3): 195-205.
|
|
|
Abstract The effect of the thickness and thermal conductivities of the bottom linings, cooling condi-tions and hearth temperature on the temperature field of the bottom had been studied by FiniteHankel Transform, and the results were shown by Curves. It is pointed out that in a bottomwith multiple lining layers, the lower the thermal conductivity of the most inner lining andthe higher the thermal conductivity of the more outer lining, the sharper the temperature gradientof the bottom and the smaller the heat loss. Cooling conditions and hearth temperature havegreat effect on the temperature field in the bottom. The author pointed out that the dependence of the position of 1150℃ on the inner andouter diameter of the hearth and the thickness of its lining layers should be investigated furtherthe effect of the depth of the salamander on the temperature field, especially on the position of1150℃ and the temperature of the top of the foundation, should also be studied further. The author presumes that when the lining material with higher thermal conductivity is usedas the most inner lining layer, it may have a "critical thickness". Under this thickness, it obeysthe principle that the lower the thermal conductivity of the most inner lining layer, the sharperthe temperature gradient; above this critical thickness, it is just opposite to the former case. In a bottom with multiple lining layers, the lower layer with higher thermal conductivitythan the upper one displays a "transitional" cooling effect, for which the layer has an effectivethickness. This thickness may be a decreasing function of the ratio of the thermal conductivityof the lower layer to that of the upper layer.
|
|
Received: 18 March 1959
|
[1] 万纾民,碳衬高炉炉底传热中的若干问题(待发表).
[2] T. R. Westbrook. BF&SP, 41, No. 4 (1953) , 413．
[3] E. J. Williams and E. J. Burton, J. Iron and Steel Inst., 197 (1955) , 17．
[4] V. Paschkis, Iron and Steel Engineer, 31, No. 2 (1954) , 53．
[5] Ian N. Sneddon, Fourier Ttansforms, chap. 3, 1951．
[6] В. В. Юшкин著,万纾民译,钢铁译丛,3(1958) ,4．
[7] V. Paschkis and Taghi Mirsepassi, Iron and Steel Engineer, Junc (1956) ,116．! |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
