焼結プロセスにおける最高温度と Heat Wave の移動速度に関する理論的解析

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Two mathematical models are developed to get the useful information with regard to the rational determination of operating conditions of sintering process. The phenomena of drying, heat exchange between gas and solid particles, combustion of coke, decomposition of limestone and fusion of iron ore are considered in Model A. In Model B the fusion of iron ore and the decomposition of limestone are not involved. By the use of these models, numerical simulations regarding the propagation of sintering zone are made. It has been found from the calculated results that since the heat wave reaches to the steady state within a short period, the basic characteristics of the heat waves may be represented by a few variables to be attained under a steady state ; i. e., heat front speed, heat behind speed and the maximum temperature of sintering bed. Furthermore, the approximate method is proposed to obtain the analytical solutions concerning three process variables mentioned above on the basis of the operating conditions. Solutions obtained by this method are in satisfactory agreement with the numercal results over the wide range of operating conditions. Since the necessary time for computation based on the approximate method are extremely shorter than the time for the case of the numerical methods, this method may be available for determining the operating conditions in actual process or for optimizing the sintering process.
社団法人日本鉄鋼協会の論文
1974-04-01

焼結プロセスにおける最高温度と Heat Wave の移動速度に関する理論的解析

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