Engineering Scaling-up Rules of Stirring Ball Mill in Grinding Graphite Powders

The raw powder of natural scale graphite(325 meshes) was ground into ultrafine particles of d_50=0.2um(d_100<1um) by the method of stirring ball mill and its better morphology of laminate could be maintained. The process of scalingup 150~200 times from bench test to pilot test by onestep was studied and the rules of frictional force alike or pulverizatioal power in unit volume alike based on geometry alike were obtained. Experimental data examined the scalingup rules above.