Investigations of the Sintering Process by Applying of Mathematical Simulation

In the sintering process of iron ore, various phenomena take place simultaneously, i. e. combustion, heat transfer, decomposition, fusion, and solidification. In order to clarify the relations between each phenomena, a simplified comparison between the results of the experiment by the use of sintering pot and of the calculation by the use of mathematical simulations was carried out, and the following conclusions were deduced.(1) The heat-front speed was influenced by mass velocity of gas and heat-transfer coefficient.(2) The reaction velocity of coke combustion in sintering layer was lower than that proposed by HoTTEL for carbon sphere.(3) From the result of examination of the heat-transfer coefficient calculated and observed, it was concluded that the heat transfer by radiation and combustion should be taken into consideration.(4) The fusion and solidification were represented as a mathematical expression in the model. The portion of not-fused are grain, remained lime stone and pore in sintered ores were measured and these vlaues agreed with the calculated results.