The use of air tabling and triboelectric separation for separating a mixture of three plastics
The use of air tabling and triboelectric separation for separating a mixture of three plastics
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DOI：
10.1016/j.mineng.2005.02.015
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发表时间：
2005-12-01
影响因子：
4.8
通讯作者：
Fujita, T
中科院分区：
文献类型：
--
作者：
Dodbiba, G;Sadaki, J;Fujita, T
本文介绍了用气流摇床与摩擦电选相结合的方法对三种塑料的混合物进行干法分选。虽然空气压片对于不同密度的颗粒是有效的，但是摩擦电分离可以用于分离相似密度的颗粒。在开始分离测试之前，通过分析混合物组分之间的颗粒尺寸和密度差异的影响来评估分离装置的有效性。提出了一种在回收之前分离混合塑料的两阶段工艺。聚丙烯（PP）、聚对苯二甲酸乙二醇酯（PET）和聚氯乙烯（PVC）被选择用于调查，因为它们广泛用于日常产品的制造。第一阶段采用气流床收集富含PP的低密度组分和PET/PVC高密度组分。在第二阶段中，PET/PVC级分通过摩擦电分离器利用表面电荷的差异进行分离。(c)2005爱思唯尔有限公司保留所有权利。
The paper describes the dry separation of a mixture of three plastics by combining air tabling and triboelectric separation. While air tabling is effective for particles of different density, the triboelectric separation can be used for separation of particles of similar density. Before commencing the separation tests, the effectiveness of the separating devices was evaluated by analyzing the effects of the particle size and the difference in density between components of the mixture.A two-stage process has been proposed for separation of mixed plastics prior to recycling. Polypropylene (PP), polyethylene terephthalate (PET), and polyvinyl chloride (PVC) were selected for investigation as they are widely used in the manufacture of everyday products. An air table was employed for the first stage of process to collect a PP-rich low-density fraction and a PET/PVC high-density fraction. In the second stage, the PET/PVC fraction was separated by means of a triboelectric separator utilizing differences in surface charge. (c) 2005 Elsevier Ltd. All rights reserved.