Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
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Pelletizing Performance of Food Waste Compost by An Extrusion Process

음식물퇴비의 압출에 의한 펠렛화 특성

  • Kim, Tae-Kye (Department of Mechanical Engineering, Jinju National University) ;
  • Min, Young-Bong (Department of Bio-Industrial Machinery Engineering, Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Moon, Sung-Dong (Department of Industrial & Management Engineering. Kangwon National University) ;
  • Kim, Myung-Cheol (Department of Industrial & Management Engineering. Kangwon National University)
  • Received : 2010.07.20
  • Accepted : 2010.09.16
  • Published : 2010.10.25
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Abstract

This study was performed to develop extrusion pelletizer for pelletizing the compost waste food. The effect of water content on the shape of pellet, the relationship between diameter of pellet and of extrusion hole and the relationship between extrusion force and die angle were investigated. Considering the stable shape of compost pellet and the operation efficiency of pelletizer, the water content of 2~4% was considered as the best condition. And the compost pellet could not maintain it's shape at the water content of 10% or over. The strongest extrusion force was needs when the die angle had $90^{\circ}C$ in 6 mm extrusion hole diameter, on the other hand, the weakest extrusion force was need at the die angle of $45^{\circ}{\sim}65^{\circ}$. The compression strength of pellet shows the highest strength of 9.2Mpa when we make the compost pellet after screening the compost and make it with a size of 1.18 mm(No.16) or less.

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References

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