Resumen
Method for the implementation of an electric rotor in existing machines of very low speed by installing an additional multilayer crown. The present invention allows the installation of an electric rotor in the existing driven machine, preferably a ball mill, in order to perform the direct drive with the consequent improvement in performance without there being any risk of the balls of the mill sticking in the same due to magnetic fields. This is achieved by an additional multilayer crown where the layer or layers closest to the drum are made of magnetic material and the outer layer or layers are made of magnetic material so that the magnetic flux of the machine can circulate. (Machine-translation by Google Translate, not legally binding)