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NTIS 바로가기資源리싸이클링 = Journal of the Korean Institute of Resources Recycling, v.27 no.6, 2018년, pp.11 - 22
이상훈 (계명대학교 환경학부 환경과학전공) , 양인재 (한국광해관리공단 광해기술원) , 최승진 (한국광해관리공단 광해기술원) , 박제현 (한국광해관리공단 광해기술원)
Magnetic separators has been used in the mining and the recycling fields in general, and is still applied in wide variety of fields. It is classified into the equipments for separating coarse ferrous scrap from non-ferrous materials and the equipments for concentrating fine ferromagnetic particles b...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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미립자용 자력선별장비에 투입되는 입자의 크기는 3 mm(8 mesh) 이하를 기준으로 하는 이유는? | 자력선별장비가 처음으로 상용적으로 사용된 광업분 야에서 미립자는 보통 파쇄공정과 롯드밀을 거친 이후의 입자들로 최대크기(Top size)는 보통 모래크기인 2~3 mm 이하이다. 따라서 미립자용 자력선별장비에 투입되는 입자의 크기는 3 mm(8 mesh) 이하를 기준으로 한다. | |
저자력 선별기란? | 자력선별 장비는 흔히 저자력(Low intensity magnetic) 선별장비와 고자력(High intensity magnetic) 선별장비로 대별된다. 저자력 선별기는 자철석과 같은 강자성체나 자철석의 중액(dense medium)을 회수하는데 사용되며, 회전 Drum 형태의 영구자석이 장비에 주로 사용된다. 고자력 선별기는 1980년대까지 전자석이 사용되어 왔으나 최근 30년 동안 Nd계열의 희토영구자석의 성능이 개선되고 저렴화 됨에 따라 전자석 고구배자력선별기형태에서 희토류 영구자석 선별기로 빠르게 대체되고 있는 추세이다. | |
자력선별장비는 어떻게 구분되는가? | 자력선별장비는 일반적으로 광산업 및 재활용 분야에서 사용되어 왔으며, 다양한 분야에서 폭넓게 활용되고 있다. 자력선별장비는 비철재료로부터 철 스크랩 분리를 위한 조립자용 선별장비와 3 mm 이하 미립 강자성체를 농축하기 위한 미립자용 선별장비로 구분된다. 또한 미립자용 선별장비는 저자력 선별장비와 고자력 선별장비로 세분된다. |
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