Eddy current instrument tests non-ferrous metals

1989 ◽  
Vol 22 (5) ◽  
pp. 314
Author(s):  
K.J. Law Engineers Inc.
2021 ◽  
Vol 5 (1) ◽  
pp. 84
Author(s):  
Eirini Evangelou ◽  
Georgios N. Anastassakis ◽  
Spyridon Dionysios Karamoutsos ◽  
Athanasios Stergiou

The treatment of Wastes of Electrical and Electronic Equipment (WEEE) is a significant source of secondary raw materials. Ferrous and non-ferrous metals, electronic equipment, and plastics are among these materials. One of the most common metals sourced out of WEEE is stainless steel. Dishwashers are common sources of stainless steel, so large amounts of stainless steel can be recovered from them. In this project, dishwashers were submitted to size reduction via shredding, and the shredded products went through a magnetic separator (which separates all the magnetic ferrous components), an eddy current sensor (which separates all the non-ferrous components) and an induction sorting sensor (which removed all the metallic fractions). This procedure led to the following two streams: one with stainless steel, boards, and cables and another stream mainly including plastic. In the next stage, the stainless-steel stream passed through a high-intensity magnetic separator, leading to a magnetic and a non-magnetic stream. Thereafter, hand sorting was applied to both streams which aimed to increase the recovery from each stream.


2017 ◽  
Vol 53 (9) ◽  
pp. 652-659 ◽  
Author(s):  
A. Ziouche ◽  
M. Zergoug ◽  
N. Boucherrou ◽  
H. Boudjellal ◽  
M. Mokhtari ◽  
...  

1989 ◽  
Vol 22 (5) ◽  
pp. 314
Author(s):  
K.J. Law Engineers Inc.

2003 ◽  
Vol 12 (2) ◽  
pp. 87-101 ◽  
Author(s):  
M. B. Mesina ◽  
T. P. R. de Jong ◽  
W. L. Dalmijn

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.


2020 ◽  
Vol 77 (5) ◽  
pp. 749-766 ◽  
Author(s):  
A. Merahi ◽  
A. Hader ◽  
M. Bekaddour Benatia ◽  
K. Medles ◽  
L. Dascalescu

2004 ◽  
Vol 13 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Francesca Settimo ◽  
Paolo Bevilacqua ◽  
Peter Rem

Recovery of fine non-ferrous metals from waste streams is a notoriously difficult problem in eddy current separation technology. Existing processes either have a low capacity or an incomplete recovery for particle sizes below 5 mm. In a new process, the particles are fed slightly wet to make them stick to the surface of the conveyor belt. The action of the magnet rotor makes the non-ferrous particles tumble, so that they break loose from the belt and end up in front of the rotor. The new process combines a relatively high capacity with an almost complete recovery, even for heavy and poorly conducting non-ferrous metals.


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