A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tantalum Capacitor Separation from Waste Printed Circuit Boards with Molten Salt or Metal
Tantalum is the crucial metal of surface‐mounted (SMD) tantalum capacitors. Some 50 % of the tantalum mined is consumed in its manufacture, making waste printed circuit boards (WPCBs) an excellent source of secondary tantalum. Yet, its recycling rate is less than 1 %. This paper proposes liberating SMD capacitors from WPCBs by treating them with molten metal or salt. For both processes, the epoxy encapsulation of the capacitors did not disengage from the tantalum core. Furthermore, the molten metal process appears superior to the molten salt one. The tantalum capacitors exit the pyrolysis chamber without salt adhering to them.
Tantalum Capacitor Separation from Waste Printed Circuit Boards with Molten Salt or Metal
Tantalum is the crucial metal of surface‐mounted (SMD) tantalum capacitors. Some 50 % of the tantalum mined is consumed in its manufacture, making waste printed circuit boards (WPCBs) an excellent source of secondary tantalum. Yet, its recycling rate is less than 1 %. This paper proposes liberating SMD capacitors from WPCBs by treating them with molten metal or salt. For both processes, the epoxy encapsulation of the capacitors did not disengage from the tantalum core. Furthermore, the molten metal process appears superior to the molten salt one. The tantalum capacitors exit the pyrolysis chamber without salt adhering to them.
Tantalum Capacitor Separation from Waste Printed Circuit Boards with Molten Salt or Metal
Riedewald, Frank (author) / Povey, Ian (author) / Barton, Killian (author) / Lewis, Liam (author) / Santos, Silvia (author) / O'Mahoney, Maria (author) / Sousa‐Gallagher, Maria (author)
Chemie Ingenieur Technik ; 95 ; 944-949
2023-06-01
6 pages
Article (Journal)
Electronic Resource
English
Copper recovery from waste printed circuit boards concentrated metal scraps by electrolysis
| Springer Verlag | 2017
Selective Leaching of Valuable Metals from Waste Printed Circuit Boards
| Taylor & Francis Verlag | 2003
| Taylor & Francis Verlag | 2014
Gold Recovery from Waste Printed Circuit Boards by Advanced Hydrometallurgical Processing
| British Library Online Contents | 2019