Improvements in separation of non-ferrous scrap metals using an electromagnetic sensor

This article describes a new method for identification and separation of non-ferrous scrap metals using an electromagnetic sensor that is based on the eddy current principle. The electromagnetic sensor (EMS) is a prototype system that has been developed by Delft University of Technology in co-operation with industry. Experimental results obtained with different non-ferrous metals are presented. The theory behind the sensor and the main components of the system are described