| Environmental friendly crush-magnetic separation technology for recycling metal-plated plastics from end-of-life vehicles. | |
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MedLine Citation:
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PMID: 22304328 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Metal-plated plastics (MPP), which are important from the standpoint of aesthetics or even performance, are increasingly employed in a wide variety of situations in the automotive industry. Serious environmental problems will be caused if they are not treated appropriately. Therefore, recycling of MPP is an important subject not only for resource recycling but also for environmental protection. This paper represents a novel attempt to deal with the MPP. A self-designed hammer crusher was used to liberate coatings from the plastic substrate. The size distribution of particles was analyzed and described by the Rosin-Rammler function model. The optimum retaining time of materials in the crusher is 3 minutes. By this time the liberation rate of the materials can reach 87.3%. When the density of the suspension is 31250 g/m3, the performance of liberation is the best. Two-step magnetic separation was adopted to avoid excessive crushing and to guarantee the quality of products. Concerning both the separation efficiency and grade of products, the optimum rotational speed of the magnetic separator is 50-70 rpm. Based on the above studies about liberating and separating behavior of the materials, a continuous recycling system (the technology of crush-magnetic separation) is developed. This recycling system provides a feasible method for recycling MPP efficiently, economically and environmentally. |
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Authors:
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Mianqiang Xue; Jia Li; Zhenming Xu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-2 |
Journal Detail:
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Title: Environmental science & technology Volume: - ISSN: 1520-5851 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-6 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0213155 Medline TA: Environ Sci Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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