Use of gravity separation in metals concentration from printed circuit board scraps
نویسندگان
چکیده
منابع مشابه
Metals Content in Printed Circuit Board Waste
This paper an presents analysis of metals in waste of printed circuit boards (PCB) covering types of PCB, segregated from PC computers, mobile phones, and mixed. The presented data identifies metals and other substances found in PCB waste based on elemental and technical analysis of PCBs. PCB categorization based on gold concentration is presented, resulting in two groups: electric and electron...
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The recovery of precious metals from waste printed circuit boards (PCBs) is an effective recycling process. This paper presents a promising hydrometallurgical process to recover precious metals from waste PCBs. To simplify the metal leaching process, large pieces of PCBs were used instead of a pulverized sample. The chemical coating present on the PCBs was removed by sodium hydroxide (NaOH) tre...
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In this contribution we are dealing with the possibility of electronic waste separation by temperature effect. It gives a possible direction how to solve the problem of increasing with electronic waste not only in Czech Republic, but also throughout the world. Further, we are dealing with of heat transfer inside the printed circuit boards (PCB) and with thermal longitudinal expansion of used ma...
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This paper provides a general overview of immediate and long-term aims of the printed circuit board inspection project of The Robotics Institute. Its purpose is to highlight some of the significant issues specific to printed circuit board inspection and to provide a discussion of our basic thesis that machine inspection should be coupled with machine diagnosis of the causes of observed printed ...
متن کاملRecovery of Heavy Metals from Spent Etching Waste Solution of Printed Circuit Board (PCB) Manufacturing
The process of etching is the most crucial part of the work of manufacturing printed circuit boards (PCB). In the etching process by nitric acid, a spent etching waste solution of composition 250 g/L HNO3, 30-40 g/L Cu, 30-40 g/L Sn, 30-40 g/L Pb and 20-25 g/L Fe is produced. High metal concentrations in the spent etching waste solution make it a viable candidate for the recovery of metals. Rec...
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ژورنال
عنوان ژورنال: Rem: Revista Escola de Minas
سال: 2014
ISSN: 0370-4467
DOI: 10.1590/s0370-44672014000100011