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논문 기본 정보

자료유형
학술저널
저자정보
Lee Wonjae (Department of Earth Resources and Environmental Engineering Hanyang University Seoul Republic of Ko) Park Seungsoo (Department of Earth Resources and Environmental Engineering Hanyang University Seoul Republic of Ko) Park Jaikoo (Department of Earth Resources and Environmental Engineering Hanyang University Seoul Republic of Ko)
저널정보
한국자원공학회 Geosystem Engineering Geosystem Engineering Vol.24 No.4
발행연도
2021.8
수록면
173 - 179 (7page)
DOI
10.1080/12269328.2021.1942235

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초록· 키워드

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In this study, the grinding characteristics of waste printed circuit boards (PCBs) were evaluated using a population balance model (PBM). The grinding characteristics under various conditions (hammer rotational speeds of 1600, 2000, and 2400 rpm; screen aperture sizes of 0.71, 1.0, and 1.40 mm; and maximum feed sizes of 4, 6, and 8 mm) were identified. A PBM for a continuous hammer mill was used to quantitatively demonstrate the grinding characteristics. No significant difference was observed in the particle sizes of the products for various hammer rotational speeds. Nevertheless, the specific rate of breakage increased with the hammer rotational speed. As expected, a narrow screen aperture yielded a fine product. The mean residence time was increased in this case to comminute the particles to a finer size. Furthermore, a finer feed was predicted to yield a finer product; however, a coarser feed was observed to yield such a product instead. Each hammer milling condition should be controlled with respect to the hammer milling performance and target particle size of the product.

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