Abstract: Vertimill was widely used in foreign countries because of high efficiency and energy saving in fine grinding. However， it was firstly introduced in China. In order to display the better performance of vertimill， thevertimillelectromechanicalflow 45-52A， grindingdensity 55±5% and medium fillingrate 26% as the best operation parameters was obtained based on comparison research of current， grinding concentration and medium filling rate. While， the structure， working principles， ore grinding medium and the problems which should be noticed in the practical application of the vertimill were introduced， and the economic and technical index of the vertimill and traditional ball mill were analysised. It is showed that can besaved operation cost， reduced thesteelconsumption of 0.1kg/t， increased content of the -45μm of 11% and saved energy 40%. Besides， the recovery of copper and associated gold can be improved to 0.3% and 4%，respectively.