炭材内装熱間成型ブリケットのガス化反応に及ぼす雰囲気ガスと温度の影響(製銑)

概要

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The gasification behavior of carbon composite iron ore produced by hot briquetting process was examined under various gas atmospheres such as CO-N_2, CO_2-N_2 and CO-CO_2 at various temperatures. The gasification of coal was affected strongly by atmospheric gas concentration and reaction temperature. Kinetic analysis in various gas atmospheres was carried out by using the first order reaction model, which yields the straight line relation between reaction rate constants for the gasification of coal and the gas concentration. Therefore, reaction rate constants for the gasification of coal in CO-CO_2-N_2 gas atmosphere were written as follows; [numerical formula] [numerical formula] [numerical formula] where, k_<C1> and k_<C2> are the gasification rate constant of the first half(1/s) and the latter half(1/s) respectively, k_<C1>(CO), k_<C1>(CO_2) and k_<C1>(N_2) are k_<C1> in 100% CO gas atmosphere (1/s), 100% CO_2 gas atmosphere (1/s) and 100% N_2 gas atmosphere (1/s) respectively, k_<C2>(CO), k_<C2>(CO_2) and k_<C2>(N_2) are k_<C2> in 100% CO gas atmosphere (1/s), 100% CO_2 gas atmosphere (1/s) and 100% N_2 gas atmosphere (1/s) respectively, C_<CO>, C_<CO_2> and C_N_2 are the concentration of CO gas (vol%), CO_2 gas (vol%) and N_2 gas (vol%) respectively.
社団法人日本鉄鋼協会の論文
2007-01-01