Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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The Screen Efficiency Improving Effect Analysis by the Screen Motion Characteristic Analysis Applying Blockage Prevention Spring

막힘 방지 스프링 적용 스크린 운동 특성 분석을 통한 스크린 효율 개선 효과 분석

  • 이한솔 (과학기술연합대학원대학교 자원공학과) ;
  • 유명렬 (제로에미션) ;
  • 이훈 (한국지질자원연구원)
  • Received : 2022.09.23
  • Accepted : 2022.11.07
  • Published : 2022.12.31
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Abstract

The general screen used to separate the particle size of recycled aggregate has restrictions when dealing with moisturized materials because of the blockage phenomenon. Therefore, in this study, to improve the separation efficiency of the conventional screen, the excellence of additional vibrating device based on spring was decided by a simulation experiment based on the discrete element method (DEM). The motion characteristic was investigated by analyzing the displacement, amplitude, and strain angle based on the spring design. Further, the particle motion was simulated by applying spring motion. The material flow and separation efficiency of the screen applied spring were confirmed as 9.2 kg/s and 97 %, respectively. Consequently, the improvement in the screen applied with blockage prevention spring was confirmed by comparing with the conventional screen.

순환골재 입도 분리를 위해 사용되는 일반적인 스크린은 막힘 현상으로 인해 함수 시료 처리가 제한적이다. 따라서 본 연구에서는 기존 스크린의 분리 효율을 개선하기 위하여, DEM(Discrete Element Method) 기반의 모사 실험을 통해 스프링 기반의 추가 보조 진동 장치의 우수성을 판단하였다. 스프링 디자인에 따른 변위, 진폭 및 변형 각 분석을 통해 운동 특성을 확인하였으며, 이를 스크린에 적용하여 입자의 거동을 모사하였다. 입자 모사 결과, 스프링이 적용된 스크린의 물질 흐름 및 분리 효율은 각각 9.2 kg/s, 97 %로 나타났으며, 기존 스크린과의 비교를 통해 막힘 방지 스프링의 적용은 기존 스크린을 개선할 수 있음을 확인하였다.

Keywords

Acknowledgement

본 연구는 환경부의 재원으로 한국환경산업기술원(KEITI)의 지원을 받아 수행한 연구과제입니다(No.202203490003).

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