Development of Highly Volume Reduction Process for Drinking Aluminum Can

本研究旨在开发废旧铝罐回收利用新系统。这一过程本质上是固相技术，相对运动产生的摩擦热和压力允许形成塑化层，而不需要外部热源，如炉子热量。其原理是对装有挤压喷嘴的筒体中的刮削铝施加轴向载荷。塑化层的厚度有限，并与旋转柱塞紧密接触。随着塑化层的不断生成，废罐头材料通过药筒挤压成丝状。采用细小的MIG焊丝或实心铝块作为废钢材料，通过几种参数组合包装在药筒中进行了初步试验。结果表明，柱塞转速和摩擦压力对加工时间有显著影响，加工过程中摩擦温度可达750K。认为与传统的熔融工艺相比，较低的处理温度可以减少二恶英等污染气体，缩短处理时间，该项目的成功实施证明了新方法处理废物的原理，但结果本身是有限的。主要原因是项目预算的减少。该工艺将由本项目开发的间歇生产系统扩展为连续生产。

This study was carried out to aim development of new system to recycling waste cans of aluminum. This process is the essentially solid phase technique, frictional heat and pressure caused by relative motion allows a plasticized layer to form without the need for an external heat source such as furnace heat. The principle is characterized that rotating plunge is applied axial load onto the scraped aluminum which is filled in a cartridge with extruding nozzle. The plasticized layer limited thickness and forms in close contact to the r**ating plunger. With continued generation of the plasticized layer formed, scrap canned material is extruded into wire form through the cartridge.Preliminary experiments was performed using fine MIG welding wire or solid block of aluminum as scrap materials which was packed in the cartridge using several parameter combinations. The results shows rotation speed of plunger and frictional pressure give a significant effect of processing time and martial temperature reaches 750K in processing. It is considered that lower processing temperature resulted in reduction of pollution gases such as dioxin and reducing of processing time comparing with conventional fusion process.This project was successfully carried out to proof the principal of novel approach for waste materials processing, however the result itself was limited. The main reason is the reduction of project budge. The process will be expand into continuously processing from batch system which was developed in this project.