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Cui, Jirang
Publications (5 of 5) Show all publications
Forssberg, E., Cui, J., Manouchehri, H.-R. & Roven, H. (2008). Recovery of metals from shredded television scrap (ed.). In: (Ed.), Wang Dian Zuo; Sun Chuan Yao; Wang Fu Liang; Zhang Li Cheng; Han Long (Ed.), Proceedings of XXIV International Mineral Processing Congress: Beijing, China 24-28 September 2008. Paper presented at International Mineral Processing Congress : 24/09/2008 - 28/09/2008 (pp. 3461-3468). Beijing: American Science Press Inc.
Open this publication in new window or tab >>Recovery of metals from shredded television scrap
2008 (English)In: Proceedings of XXIV International Mineral Processing Congress: Beijing, China 24-28 September 2008 / [ed] Wang Dian Zuo; Sun Chuan Yao; Wang Fu Liang; Zhang Li Cheng; Han Long, Beijing: American Science Press Inc., 2008, p. 3461-3468Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Beijing: American Science Press Inc., 2008
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
urn:nbn:se:ltu:diva-32887 (URN)787d4190-b18e-11dd-9c9d-000ea68e967b (Local ID)978-7-900249-54-8 (ISBN)787d4190-b18e-11dd-9c9d-000ea68e967b (Archive number)787d4190-b18e-11dd-9c9d-000ea68e967b (OAI)
Conference
International Mineral Processing Congress : 24/09/2008 - 28/09/2008
Note
Godkänd; 2008; 20081113 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Cui, J. & Forssberg, E. (2007). Characterization of shredded television scrap and implications for materials recovery (ed.). Paper presented at . Waste Management, 27(3), 415-424
Open this publication in new window or tab >>Characterization of shredded television scrap and implications for materials recovery
2007 (English)In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 27, no 3, p. 415-424Article in journal (Refereed) Published
Abstract [en]

Characterization of TV scrap was carried out by using a variety of methods, such as chemical analysis, particle size and shape analysis, liberation degree analysis, thermogravimetric analysis, sink-float test, and IR spectrometry. A comparison of TV scrap, personal computer scrap, and printed circuit board scrap shows that the content of non-ferrous metals and precious metals in TV scrap is much lower than that in personal computer scrap or printed circuit board scrap. It is expected that recycling of TV scrap will not be cost-effective by utilizing conventional manual disassembly. The result of particle shape analysis indicates that the non-ferrous metal particles in TV scrap formed as a variety of shapes; it is much more heterogeneous than that of plastics and printed circuit boards. Furthermore, the separability of TV scrap using density-based techniques was evaluated by the sink-float test. The result demonstrates that a high recovery of copper could be obtained by using an effective gravity separation process. Identification of plastics shows that the major plastic in TV scrap is high impact polystyrene. Gravity separation of plastics may encounter some challenges in separation of plastics from TV scrap because of specific density variations.

National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
urn:nbn:se:ltu:diva-8738 (URN)10.1016/j.wasman.2006.02.003 (DOI)000244027700013 ()2-s2.0-33846042706 (Scopus ID)74477890-6d04-11dc-89fb-000ea68e967b (Local ID)74477890-6d04-11dc-89fb-000ea68e967b (Archive number)74477890-6d04-11dc-89fb-000ea68e967b (OAI)
Note
Validerad; 2007; 20070927 (pirkko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Cui, J. & Forssberg, E. (2006). Recycling of consumer electronic scrap (ed.). In: (Ed.), Bhaskar Raju (Ed.), Proceedings, International Seminar on Mineral Processing Technology: . Paper presented at International Seminar on Mineral Processing Technology : 08/03/2006 - 10/03/2006 (pp. 14-19). New Dehli: Allied Publishers Ltd
Open this publication in new window or tab >>Recycling of consumer electronic scrap
2006 (English)In: Proceedings, International Seminar on Mineral Processing Technology / [ed] Bhaskar Raju, New Dehli: Allied Publishers Ltd , 2006, p. 14-19Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
New Dehli: Allied Publishers Ltd, 2006
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
urn:nbn:se:ltu:diva-38834 (URN)d58c2910-fa28-11db-b2dd-000ea68e967b (Local ID)81-8424-012-0 (ISBN)d58c2910-fa28-11db-b2dd-000ea68e967b (Archive number)d58c2910-fa28-11db-b2dd-000ea68e967b (OAI)
Conference
International Seminar on Mineral Processing Technology : 08/03/2006 - 10/03/2006
Note
Godkänd; 2006; 20070504 (ysko)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved
Cui, J. (2005). Mechanical recycling of consumer electronic scrap (ed.). (Licentiate dissertation). Paper presented at . Luleå: Luleå tekniska universitet
Open this publication in new window or tab >>Mechanical recycling of consumer electronic scrap
2005 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Consumer electronic equipment (brown goods), such as television sets, radio sets, and video recorders, are most common. However, recycling of consumer electronic scrap is only beginning. Characterization of TV scrap was carried out by using a variety of methods, such as chemical analysis, particle size and shape analysis, liberation degree analysis, thermogravimetric analysis, sink-float test, and IR spectrometer. A comparison of TV scrap, personal computer scrap, and printed circuit boards scrap shows that the content of non-ferrous metals and precious metals in TV scrap is much lower than in personal computer scrap or printed circuit boards scrap. It is expected that recycling of TV scrap will not be cost- effective by utilizing conventional manual disassembly. The result of particle shape analysis indicates that the non-ferrous metals particles in TV scrap formed as a variety of shapes, it is much more heterogeneous than for plastics and printed circuit boards. The results of sink-float tests demonstrate that a high recovery of copper could be obtained by an effective gravity separation process. Identification of plastics shows that the major plastic in TV scrap is high impact polystyrene. Gravity separation of plastics may encounter some challenges in separation of plastics from TV scrap because of specific density variations. Furthermore, Mechanical recycling of TV scrap oriented to recovery of non- ferrous metals is highlighted by utilizing several techniques, such as air table, eddy current separation, and optical sorting. The separation results reveal that air table separation is an effective technology to recover metals from consumer electronic scraps. By using a DGS table, approximately 90% of non-ferrous metals were recovered in the heavy product with a purity of 40%. Printed circuit boards and cables in TV scrap cause metals loss due to the fact that metals in printed circuit boards and cables are not liberated from plastics and ceramic materials. The study shows that eddy current separation and optical (metal) sorting process provide alternatives to recover metals from TV scraps. At last, new developments of eddy current separation, such as wet eddy current separation and Magnus separation are discussed in the thesis. A comparison of eddy current separation and Magnus separation on aluminum recovery shows that wet eddy current separation is more effective for recovery of fine non-ferrous particles.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2005. p. 40
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757 ; 2005:36
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
urn:nbn:se:ltu:diva-17277 (URN)292d00b0-8f37-11db-8975-000ea68e967b (Local ID)292d00b0-8f37-11db-8975-000ea68e967b (Archive number)292d00b0-8f37-11db-8975-000ea68e967b (OAI)
Note
Godkänd; 2005; 20061219 (haneit)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Cui, J. & Forssberg, E. (2003). Mechanical recycling of waste electric and electronic equipment: a review (ed.). Paper presented at . Journal of Hazardous Materials, 99(3), 243-263
Open this publication in new window or tab >>Mechanical recycling of waste electric and electronic equipment: a review
2003 (English)In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 99, no 3, p. 243-263Article in journal (Refereed) Published
Abstract [en]

The production of electric and electronic equipment (EEE) is one of the fastest growing areas. This development has resulted in an increase of waste electric and electronic equipment (WEEE). In view of the environmental problems involved in the management of WEEE, many counties and organizations have drafted national legislation to improve the reuse, recycling and other forms of recovery of such wastes so as to reduce disposal. Recycling of WEEE is an important subject not only from the point of waste treatment but also from the recovery of valuable materials.WEEE is diverse and complex, in terms of materials and components makeup as well as the original equipment's manufacturing processes. Characterization of this waste stream is of paramount importance for developing a cost-effective and environmentally friendly recycling system. In this paper, the physical and particle properties of WEEE are presented. Selective disassembly, targeting on singling out hazardous and/or valuable components, is an indispensable process in the practice of recycling of WEEE. Disassembly process planning and innovation of disassembly facilities are most active research areas. Mechanical/physical processing, based on the characterization of WEEE, provides an alternative means of recovering valuable materials. Mechanical processes, such as screening, shape separation, magnetic separation, Eddy current separation, electrostatic separation, and jigging have been widely utilized in recycling industry. However, recycling of WEEE is only beginning.For maximum separation of materials, WEEE should be shredded to small, even fine particles, generally below 5 or 10 mm. Therefore, a discussion of mechanical separation processes for fine particles is highlighted in this paper.Consumer electronic equipment (brown goods), such as television sets, video recorders, are most common. It is very costly to perform manual dismantling of those products, due to the fact that brown goods contain very low-grade precious metals and copper. It is expected that a mechanical recycling process will be developed for the upgrading of low metal content scraps.

National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
urn:nbn:se:ltu:diva-11681 (URN)10.1016/S0304-3894(03)00061-X (DOI)000183215000002 ()2-s2.0-0037658985 (Scopus ID)ab327d10-aa2b-11db-aeba-000ea68e967b (Local ID)ab327d10-aa2b-11db-aeba-000ea68e967b (Archive number)ab327d10-aa2b-11db-aeba-000ea68e967b (OAI)
Note
Validerad; 2003; 20070122 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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