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231223s2009 xx |||||o 00| ||eng c |
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7 |
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|a 10.1016/j.wasman.2008.06.035
|2 doi
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|a pubmed25n0610.xml
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|a (DE-627)NLM182836622
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|a (NLM)18835149
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Yoo, Jae-Min
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Enrichment of the metallic components from waste printed circuit boards by a mechanical separation process using a stamp mill
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| 264 |
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|c 2009
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 06.04.2009
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|a Date Revised 24.11.2016
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Printed circuit boards incorporated in most electrical and electronic equipment contain valuable metals such as Cu, Ni, Au, Ag, Pd, Fe, Sn, and Pb. In order to employ a hydrometallurgical route for the recycling of valuable metals from printed circuit boards, a mechanical pre-treatment step is needed. In this study, the metallic components from waste printed circuit boards have been enriched using a mechanical separation process. Waste printed circuit boards shredded to <10mm were milled using a stamp mill to liberate the various metallic components, and then the milled printed circuit boards were classified into fractions of <0.6, 0.6-1.2, 1.2-2.5, 2.5-5.0, and >5.0mm. The fractions of milled printed circuit boards of size <5.0mm were separated into a light fraction of mostly non-metallic components and a heavy fraction of the metallic components by gravity separation using a zig-zag classifier. The >5.0mm fraction and the heavy fraction were subjected to two-step magnetic separation. Through the first magnetic separation at 700 Gauss, 83% of the nickel and iron, based on the whole printed circuit boards, was recovered in the magnetic fraction, and 92% of the copper was recovered in the non-magnetic fraction. The cumulative recovery of nickel-iron concentrate was increased by a second magnetic separation at 3000 Gauss, but the grade of the concentrate decreased remarkably from 76% to 56%. The cumulative recovery of copper concentrate decreased, but the grade increased slightly from 71.6% to 75.4%. This study has demonstrated the feasibility of the mechanical separation process consisting of milling/size classification/gravity separation/two-step magnetic separation for enriching metallic components such as Cu, Ni, Al, and Fe from waste printed circuit boards
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 650 |
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7 |
|a Industrial Waste
|2 NLM
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| 650 |
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7 |
|a Metals
|2 NLM
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| 700 |
1 |
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|a Jeong, Jinki
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yoo, Kyoungkeun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lee, Jae-Chun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Wonbaek
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 29(2009), 3 vom: 01. März, Seite 1132-7
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnas
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| 773 |
1 |
8 |
|g volume:29
|g year:2009
|g number:3
|g day:01
|g month:03
|g pages:1132-7
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| 856 |
4 |
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|u http://dx.doi.org/10.1016/j.wasman.2008.06.035
|3 Volltext
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