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2020 Vol.57, Issue 5 Preview Page

Review

Application of Discrete Element Method in the Field of Comminution: Current Status and Future

이산요소법의 파분쇄 분야 적용: 현황 및 전망

Jihoe Kwon1*
권 지회1*
1Senior Researcher, Geo-ICT Convergence Research Team, Korea Institute of Geoscience and Mineral Resources
1한국지질자원연구원 지오플랫폼연구본부 Geo-ICT 융합연구팀 선임연구원
* Corresponding Author
October 2020. pp. 495-505
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Abstract

For several decades, the discrete element method (DEM) has been broadly applied to problems that are difficult to solve using the conventional continuum approach. In the field of mineral processing, DEM has played a key role in understanding the crushing and grinding processes for the past two decades. DEM, which has been mainly utilized for obtaining detailed energy spectra inside mills in the early age, has been broadening its application to fracture analysis, crushing, and wearing in mills. Furthermore, the reliability of process scale analysis can be enhanced by combining DEM with the population balance model. This study provides a general overview of research trends, applications, prospects, and challenges of DEM in the field of comminution.

Keywords
Discrete element method
Comminution
Mill
Crusher
Process modelling

최근 수십년간 이산요소법(discrete element method, DEM)은 전통적인 연속체 접근법으로 해석이 어려운 다양한 문제에 그 활용성이 날로 증가하고 있으며, 선광 분야 중 파분쇄 분야에서 20여년 전부터 적극적으로 활용되고 있다. 초기 장비 내 에너지 스펙트럼 분석 중심으로 활용되던 DEM은 입자내 균열의 발생 및 전파, 파쇄, 장비 마모에 이르기까지 다양한 현상을 입자 스케일의 정보를 활용하여 분석하는 도구로 활용되어 왔으며, 물질수지모델과의 연계 해석을 통해 공정 스케일 연구의 폭을 확장시키는 데도 기여해 왔다. 본 연구에서는 최근 DEM을 이용한 분쇄 연구 동향의 변화, 활용 사례, 추후 전망 및 해결 과제 등에 대해 세부적으로 살펴보았다.

키워드
이산요소법
파분쇄
밀
파쇄기
공정 모델링
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 57
  • No :5
  • Pages :495-505
  • Received Date :2020. 09. 04
  • Revised Date :2020. 09. 24
  • Accepted Date : 2020. 10. 27
  • DOI :https://doi.org/10.32390/ksmer.2020.57.5.495
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