The use of air separation in recycling CRT TV sets
•Air separation is used to separate metals from one fraction of CRT TV sets.•The fraction consisting of yokes of a cathode tube, cables, connectors and wires was tested.•Model of cross-flow gravity air separator with horizontal flow was used in testing.•Of the four tested classes, grain size −0.5mm...
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| Published in | Waste management (Elmsford) Vol. 38; pp. 366 - 371 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
Elsevier Ltd
01.04.2015
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| Online Access | Get full text |
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| Abstract | •Air separation is used to separate metals from one fraction of CRT TV sets.•The fraction consisting of yokes of a cathode tube, cables, connectors and wires was tested.•Model of cross-flow gravity air separator with horizontal flow was used in testing.•Of the four tested classes, grain size −0.5mm showed the best results.•The Analysis of Variance showed that the splitter height and feed position have the strongest effect on separation.
The aim of this paper is to examine the possibility of use of air separation in recycling CRT TV sets and determine the effect of operating variables of separators. Eight CRT TV sets were collected and after manual disassembly, parts of CRT TV sets were sorted into four fractions taking into account their properties. The subject of this research was the fraction consisting of yokes of a cathode tube, cables, connectors and wires. Testing samples were obtained by manual disassembly, shredding and sieving, after which the separation on the model of a cross-flow gravity air separator with horizontal flow was carried out. Four grain sizes, 4/2mm, 2/1mm, 1/0.5mm and −0.5mm, were tested on the separator. Testing was carried out according to the central composite design for three factors: splitter height, air velocity and feed position. The evaluation of results was carried out by the analysis of two parameters: concentrate grade and recovery. The obtained values of the concentrate grade varied from 45.9% for the smallest grain size of −0.5mm to 89.4% for the grain size of 1/0.5mm while recovery was very high, mostly over 99%. The highest increase of metal content in the concentrate of 21.1% was recorded for the smallest grain size of −0.5%. The Analysis of Variance showed that the splitter height and feed position have the strongest effect on the concentrate grade. |
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| AbstractList | The aim of this paper is to examine the possibility of use of air separation in recycling CRT TV sets and determine the effect of operating variables of separators. Eight CRT TV sets were collected and after manual disassembly, parts of CRT TV sets were sorted into four fractions taking into account their properties. The subject of this research was the fraction consisting of yokes of a cathode tube, cables, connectors and wires. Testing samples were obtained by manual disassembly, shredding and sieving, after which the separation on the model of a cross-flow gravity air separator with horizontal flow was carried out. Four grain sizes, 4/2mm, 2/1mm, 1/0.5mm and -0.5mm, were tested on the separator. Testing was carried out according to the central composite design for three factors: splitter height, air velocity and feed position. The evaluation of results was carried out by the analysis of two parameters: concentrate grade and recovery. The obtained values of the concentrate grade varied from 45.9% for the smallest grain size of -0.5mm to 89.4% for the grain size of 1/0.5mm while recovery was very high, mostly over 99%. The highest increase of metal content in the concentrate of 21.1% was recorded for the smallest grain size of -0.5%. The Analysis of Variance showed that the splitter height and feed position have the strongest effect on the concentrate grade. •Air separation is used to separate metals from one fraction of CRT TV sets.•The fraction consisting of yokes of a cathode tube, cables, connectors and wires was tested.•Model of cross-flow gravity air separator with horizontal flow was used in testing.•Of the four tested classes, grain size −0.5mm showed the best results.•The Analysis of Variance showed that the splitter height and feed position have the strongest effect on separation. The aim of this paper is to examine the possibility of use of air separation in recycling CRT TV sets and determine the effect of operating variables of separators. Eight CRT TV sets were collected and after manual disassembly, parts of CRT TV sets were sorted into four fractions taking into account their properties. The subject of this research was the fraction consisting of yokes of a cathode tube, cables, connectors and wires. Testing samples were obtained by manual disassembly, shredding and sieving, after which the separation on the model of a cross-flow gravity air separator with horizontal flow was carried out. Four grain sizes, 4/2mm, 2/1mm, 1/0.5mm and −0.5mm, were tested on the separator. Testing was carried out according to the central composite design for three factors: splitter height, air velocity and feed position. The evaluation of results was carried out by the analysis of two parameters: concentrate grade and recovery. The obtained values of the concentrate grade varied from 45.9% for the smallest grain size of −0.5mm to 89.4% for the grain size of 1/0.5mm while recovery was very high, mostly over 99%. The highest increase of metal content in the concentrate of 21.1% was recorded for the smallest grain size of −0.5%. The Analysis of Variance showed that the splitter height and feed position have the strongest effect on the concentrate grade. The aim of this paper is to examine the possibility of use of air separation in recycling CRT TV sets and determine the effect of operating variables of separators. Eight CRT TV sets were collected and after manual disassembly, parts of CRT TV sets were sorted into four fractions taking into account their properties. The subject of this research was the fraction consisting of yokes of a cathode tube, cables, connectors and wires. Testing samples were obtained by manual disassembly, shredding and sieving, after which the separation on the model of a cross-flow gravity air separator with horizontal flow was carried out. Four grain sizes, 4/2mm, 2/1mm, 1/0.5mm and −0.5mm, were tested on the separator. Testing was carried out according to the central composite design for three factors: splitter height, air velocity and feed position. The evaluation of results was carried out by the analysis of two parameters: concentrate grade and recovery. The obtained values of the concentrate grade varied from 45.9% for the smallest grain size of −0.5mm to 89.4% for the grain size of 1/0.5mm while recovery was very high, mostly over 99%. The highest increase of metal content in the concentrate of 21.1% was recorded for the smallest grain size of −0.5%. The Analysis of Variance showed that the splitter height and feed position have the strongest effect on the concentrate grade. The aim of this paper is to examine the possibility of use of air separation in recycling CRT TV sets and determine the effect of operating variables of separators. Eight CRT TV sets were collected and after manual disassembly, parts of CRT TV sets were sorted into four fractions taking into account their properties. The subject of this research was the fraction consisting of yokes of a cathode tube, cables, connectors and wires. Testing samples were obtained by manual disassembly, shredding and sieving, after which the separation on the model of a cross-flow gravity air separator with horizontal flow was carried out. Four grain sizes, 4/2mm, 2/1mm, 1/0.5mm and -0.5mm, were tested on the separator. Testing was carried out according to the central composite design for three factors: splitter height, air velocity and feed position. The evaluation of results was carried out by the analysis of two parameters: concentrate grade and recovery. The obtained values of the concentrate grade varied from 45.9% for the smallest grain size of -0.5mm to 89.4% for the grain size of 1/0.5mm while recovery was very high, mostly over 99%. The highest increase of metal content in the concentrate of 21.1% was recorded for the smallest grain size of -0.5%. The Analysis of Variance showed that the splitter height and feed position have the strongest effect on the concentrate grade.The aim of this paper is to examine the possibility of use of air separation in recycling CRT TV sets and determine the effect of operating variables of separators. Eight CRT TV sets were collected and after manual disassembly, parts of CRT TV sets were sorted into four fractions taking into account their properties. The subject of this research was the fraction consisting of yokes of a cathode tube, cables, connectors and wires. Testing samples were obtained by manual disassembly, shredding and sieving, after which the separation on the model of a cross-flow gravity air separator with horizontal flow was carried out. Four grain sizes, 4/2mm, 2/1mm, 1/0.5mm and -0.5mm, were tested on the separator. Testing was carried out according to the central composite design for three factors: splitter height, air velocity and feed position. The evaluation of results was carried out by the analysis of two parameters: concentrate grade and recovery. The obtained values of the concentrate grade varied from 45.9% for the smallest grain size of -0.5mm to 89.4% for the grain size of 1/0.5mm while recovery was very high, mostly over 99%. The highest increase of metal content in the concentrate of 21.1% was recorded for the smallest grain size of -0.5%. The Analysis of Variance showed that the splitter height and feed position have the strongest effect on the concentrate grade. |
| Author | Bedekovic, Gordan |
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| CitedBy_id | crossref_primary_10_1016_j_jhazmat_2021_125664 crossref_primary_10_1016_j_wasman_2020_04_033 crossref_primary_10_1016_j_jclepro_2017_05_173 crossref_primary_10_1080_03067319_2021_1958802 crossref_primary_10_1080_09593330_2016_1237552 crossref_primary_10_1016_j_wasman_2020_05_002 |
| Cites_doi | 10.1016/S0360-8352(98)00047-3 10.1016/0360-8352(96)00146-5 10.1016/j.jmatprotec.2007.06.004 10.1016/j.mineng.2005.02.015 10.1016/j.actamat.2012.11.005 10.1016/j.wasman.2013.07.005 10.1016/j.ejor.2013.09.003 10.1016/S0736-5845(99)00048-4 10.1016/j.jenvman.2013.01.012 10.1016/j.rcim.2013.03.003 10.1061/(ASCE)0733-9372(2004)130:1(81) 10.1016/j.scitotenv.2012.07.078 10.1016/j.mineng.2008.10.007 10.1080/1478647031000139385 10.1016/j.tre.2013.11.001 10.1016/S0304-3894(03)00061-X 10.1016/j.jhazmat.2010.07.107 |
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| Copyright | 2014 Elsevier Ltd Copyright © 2014 Elsevier Ltd. All rights reserved. |
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| Keywords | E-waste Recycling CRT TV sets Air separation |
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| Snippet | •Air separation is used to separate metals from one fraction of CRT TV sets.•The fraction consisting of yokes of a cathode tube, cables, connectors and wires... The aim of this paper is to examine the possibility of use of air separation in recycling CRT TV sets and determine the effect of operating variables of... |
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| SubjectTerms | air Air separation analysis of variance CRT TV sets Disassembly E-waste electrodes Grain size gravity Industrial Waste - analysis Manuals Mathematical models Models, Theoretical Quality Recycling Recycling - methods Separators shredding sieving Television |
| Title | The use of air separation in recycling CRT TV sets |
| URI | https://dx.doi.org/10.1016/j.wasman.2014.12.008 https://www.ncbi.nlm.nih.gov/pubmed/25550215 https://www.proquest.com/docview/1667958522 https://www.proquest.com/docview/1732814152 https://www.proquest.com/docview/1770301539 https://www.proquest.com/docview/1836671202 |
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