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• W2237819498 abstract "The crushing effect of waste phone's circuit boards by mechanical-physical method under different pretreatment processes (without pretreatment, disassembling electrical components, heating treatment) was investigated. The composition, mass distribution, feature, liberation degree of crushed products were analyzed. The results show that the heating process has the obvious influence on the mass distribution and disassembling has almost no effect on the crushing effect. The liberation is easiest for the circuit boards after heating and is difficult for the circuit boards after disassembling. Considering the impact of environment and investment, the waste phone's circuit boards can be directly crushed without disassembling and heating treatment. composed of Cu (~16%), Sn (∼4%), Fe (∼3%), Ni (∼2%), Pb (∼2%), Zn (∼1%), Ag (0.05%), Au (0.03%), Pd (0.01%), and other metals (Bi, Sb, Ti, etc. <0.01%) (2,3). So it is necessary to properly treat the waste phone's circuit boards, especially to recycle the valuable materials. A lot of works are being undertaken to investigate every step of the recycling. In general, the waste phone's circuit boards consist of a heterogeneous mix of organic materials, metals, glass fibers, etc. The recycling methods mainly include physical, chemical, or biological methods or a combination of these approaches (4). In most recycling processes, the circuit boards would be crushed or pulverized as a first step of these processes. Disassembling, milling, mechanical separation and pyrolysis are typical pretreatment processes. Understanding the effect of pretreatment processes on crushing of the waste phone's circuit boards can assist the optimization of the recycling processing line. In this paper, the pretreatment processes of disassembling and heating treatment were investigated. The main purpose of this study was to evaluate the effectiveness of crushing process of the waste phone's circuit boards under different pretreatment processes and to determine the proper pretreatment process." @default.
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• W2237819498 date "2015-01-01" @default.
• W2237819498 modified "2023-09-29" @default.
• W2237819498 title "Effect of Pretreatment on Crushing Process of Waste Phone's Circuit Boards by Mechanical–physical Method" @default.
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• W2237819498 doi "https://doi.org/10.2991/icmmita-15.2015.146" @default.
• W2237819498 hasPublicationYear "2015" @default.
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