In order to study the effects of the ore-rock crushing size distribution on the leaching rate of the uranium metal,the distribution law of particle size was studied with standard sieves,based on the relationship between volume and fractal scale of size put forward by Mandelbort.The experiment on acid leaching of uranium showed that the leaching rate of uranium increased with an increase in fractal dimension.However,when the fractal dimension is more than 2.0,it increased slowly.The study showed the best effect can be obtained when th...