金属学报  1959, Vol. 4 Issue (3): 206-216

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碳衬高炉炉缸内传热的若干问题

万纾民

中国科学院化工冶金研究所

SOME PROBLEMS OF THE HEAT FLOW THROUGH THE BLAST FURNACE HEARTH WITH CARBON LINING

WAN SHU-MING Institute of Chemical Metallurgy; Academia Sinica

万纾民. 碳衬高炉炉缸内传热的若干问题[J]. 金属学报, 1959, 4(3): 206-216.
. SOME PROBLEMS OF THE HEAT FLOW THROUGH THE BLAST FURNACE HEARTH WITH CARBON LINING[J]. Acta Metall Sin, 1959, 4(3): 206-216.

摘要 参考文献 相关文章 Metrics 全文: PDF(1174 KB)   摘要: 本文评述了一些国家近年来关于碳衬高炉炉缸内传热的研究结果,并指出了存在的若干问题。炉缸内诸耐火衬料的导热性、所占的比例及分布情况、冷却情况以及炉底结块等等对炉底温度分布和热损失的影响在本文内均作了全面深入的评述。文内指出:全粘土砖炉底的周围逐渐用碳砖来取代后,炉底的温度则逐渐降低,而此碳砖衬料则具有“过渡的”冷却作用;碳砖衬料导热性高的好处也就在于此。这种“过渡的”冷却作用有其一定的有效范围。文内还指出:最内层衬料的导热性愈低,愈靠外层的衬料的导热性愈大,均使炉底的温度变低;这是炉缸传热问题中的一项极重要的原则。由此可知:碳砖衬料的过渡冷却作用,只当其不作为最内层的衬料时才能呈现,同时炉底若装有一层导热性较高的夹层(象石墨夹层),则此夹层就具有底冷的作用。 文内指出减少热损失的新途径就是炉缸最内层材料的导热性愈小愈好。文内提出了一个新的冷却法——级联冷却法;这就是在炉底用几层衬料,愈靠外面的一层,其导热性愈大。 文内指出了现有热模型试验的最大缺点及改进办法。此缺点就是现有热模型试验没有考虑实际上形成的炉底结块的重大影响。 文内还指出:传热与炉缸内外径及其衬料厚度之间的关系应该研究;衬料的导热性对传热的影响以 Abstract：The effect of the thermal conductivities, proportion and distribution of some refractory liningmaterials in the hearth, cooling and salamander on the temperature distribution and heat loss hasbeen reviewed critically. The temperatures of the bottom with all ceramic lining can be decreasedby substituting carbon lining from its periphery, and the carbon lining displays a "transitional"cooling effect. It is justly the advantage of the high thermal conductivity of the carbon lining.Furthermore this effect has a certain effective limit. It is pointed out that the more the tem-perature of the bottom to be decreased, the lower the thermal conductivity of the most innerlining material and the higher the thermal conductivity of the more outer lining layer. This isa very important principle in this problem. By this principle, we can see that the transitionalcooling effect of the carbon lining can appear only when it is not used as the most inner lining.By the same reason, it is obvious that the layer with higher thermal conductivity, like graphitelayer, under the bottom behaves as a underhearth cooling. It is suggested that the new approach to decrease the heat loss is using the material as themost inner lining with its thermal conductivity as small as possible. A new cooling method,called cascade cooling, was described; it is using several lining layers under the bottom, of whichthe inner one has higher thermal conductivity than the outer one. It is pointed out that in theexisting thermal model for the hearth the salamander formed actually was not taken into account,thus it is very inadequate to describe the actual state of the hearth. This is a great defect of theexisting thermal model experiment. Its improvement was described. It is proposed that the de-pendence of the heat flow on the inner and outer diameter of the hearth and the thickness ofits various linings should be studied; that the effect of the thermal conductivity of lining on theheat flow and the graphitizing of the carbon lining ought to investigate further. 收稿日期: 1959-03-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 万纾民 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1959/V4/I3/206 [1] J. H. Chester, G. D. Elliot & J. Mackanzie, J. Iron and Steel Inst., 167 (1951) , 273． [2] Owen R. Rice, Ij Iron nnd Steel Inst., 170 (1952) , 89． [3] П. Н. Локшин и Т. П. 2 (1956) , 107． [4] J. Iron and Steel Inst., 170 (1952) , 139． [5] E. J. Williams and E. J. Burton, J. Iron and Steel Inst., 197 (1955) , 17． [6] J. Dobry, Hutnicke Listv, 11 (5) , (1956) 307． [7] V. Paschkis and Taghi Mirsepassi, Iron and Steel Engineer, 33, No. 6 (1956) , 116． [8] T. R. Westbrook, B. F. & S. P., 41, No. 4 (1953) , 413． [9] V. Paschkis, Iron and Steel Engineer, 31, No. 2 (1954) , 53． [10] И. Г. Половленкоo, 10 (1955) , 891． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed