An Advanced Air-sorting Method to Separate Shredded Aluminum and Copper Waste
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- Yoshida Takuya
- Hitachi Research Laboratory, Hitachi Ltd.
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- Koseki Yasuo
- Hitachi Research Laboratory, Hitachi Ltd.
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- Fukumoto Chihiro
- Industrial Processing Division, Hitachi Ltd.
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- Koizumi Tatsuya
- Industrial Processing Division, Hitachi Ltd.
Bibliographic Information
- Other Title
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- アルミ・銅の風力選別における性能の基礎特性およびその向上
- アルミ ドウ ノ フウリョク センベツ ニ オケル セイノウ ノ キソ トクセ
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Description
Air-sorting is widely used for solid wastes separation for its low-cost and easy-operation. However, it has the disadvantage of unstable performance due to fluctuation in the properties of fed materials, such as particle size and shape. Yet, little is known about the characteristics of air-sorting, and factors which affect separation efficiency have not been clearly reported. This paper presents some findings on the basic characteristics of air-sorting, and a new method for separating shredded aluminum and copper with a high separation efficiency. Preliminary tests to examine the relationship between recovery ratio and wind velocity showed that recovery ratio can be described as an integral calculus of normal distribution as a function of wind velocity. Experiments using rectangular block samples to study the effect of particle shape showed that the wind velocity whereat the particles are blown-up depends on the thickness of particle. This characteristic was supported by a calculation based on a terminal velocity equation. Based on these findings, three alternative air-sorting methods were suggested and tested. A proposed method to roll feeds before sorting showed high separation efficiency with a maximum aluminum and copper recovery ratio of 98-99%, which is higher than 87% of the conventional method.
Journal
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- Journal of the Japan Society of Waste Management Experts
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Journal of the Japan Society of Waste Management Experts 9 (2-3), 95-103, 1998
Japan Society of Material Cycles and Waste Management
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Keywords
Details 詳細情報について
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- CRID
- 1390001205298710656
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- NII Article ID
- 10002842079
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- NII Book ID
- AN10414685
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- ISSN
- 1883163X
- 18831648
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- NDL BIB ID
- 4436768
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed