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...

A method and apparatus for analysing and sorting a flow of material

The invention relates to a method and an apparatus for analysing a flow of material using X rays. The method comprises radiating the material with at least two energy levels and measuring the transmission of radiation through the material for each level separately, and is characterized in that a sensor is used for measuring the radiation...