Evaluating the Practical Application of Underwater Explosion for Recycling

概要

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The explosion in water, a new crushing technique, is suitable in crushing and liberating hard materials such as the electric parts and waste construction materials. In this study, in order to evaluate the economical effectiveness of this method recycle system of composite materials of ceramics and metal recycle system as well as cellular phones recycling one were examined. Explosion of composite materials could reduce the landfilling area required for solid waste of insulator since well-separated ceramics could be reused, in contrary of ceramics-cement mix which couldn’t be used and remain as land fill solid waste. In explosion experiments on cellular phone, plastic-metal surface could be separated based on density difference between two materials. The cash-flow balances of these recycling processes were calculated. To minimize the process cost, it was suggested that a more effective explosion method and a relatively bid explosion pond are needed for the explosion. The payment balance of this system showed that the establishment of an efficient collection system, reduction in the transportation cost, was important. Investigation on the optimum cell phone recycling location based on shipping cost calculation found that Kanto, Tokai, Kinki and Kyusyu area are the optimum.
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