In the paper,the effects of powder particleshapes on the kinetics of solid reaction (K. S. R) and errorscaused by the current methods based on spherical particlemodels have been studied. It has been found that particleshaeps have significant effects on kinetics of the solid reaction(K. S. R). However it has now not been involved in the pre-sent kinetic equations as a factor. The ball models used by thepresent kinetic equation have led to great errors not only in de-termination of the reaction constants but also in judgement ofreaction types. This is a problem that has not been much recog-nized and needs to be solved immediaitly.
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