In the smelting process, the electric furnace is intended to treat the slag from other furnaces. The slag loading of the electric furnace is carried out using a ladle which cools down after unloading the slag which is adhered to the ladle making it difficult to reload the furnace. For this reason, the ladle must be cleaned on a regular basis. Due to the above, a robot system and method have been developed to clean the electric furnace ladle, which is capable of carrying out such activity automatically through the use of a robotic manipulator. The robotic system is composed mainly of an anthropomorphous robotic manipulator of at least 6 degrees of freedom (1), and one cleaning tool (2) which allows to clean the ladle (3) each time the furnace is loaded (4).