Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Biological Treatment of OCC Flake in Fine Screen Rejects for Recovery of Fibrous Materials

생물학적 처리에 의한 OCC 스크린 리젝트 내 미해리분의 재활용

  • Sung Yong Joo (Korea Research Institute of Chemical Technology(KRICT)) ;
  • Ryu Jeong-Yong (Korea Research Institute of Chemical Technology(KRICT)) ;
  • Song Bong Keun (Korea Research Institute of Chemical Technology(KRICT))
  • 성용주 (한국화학연구원 펄프제지연구센터) ;
  • 류정용 (한국화학연구원 펄프제지연구센터) ;
  • 송봉근 (한국화학연구원 펄프제지연구센터)
  • Published : 2005.03.01
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Abstract

The increase of using low grade ace, the unsorted mixed grade, as fibrous raw materials for the packaging paper results in the increment of fine screen reject owing to the strong tendency to reduce the slot width. Since the most of screen reject consists of undispersed fiber flake, the suitable treatment of the flake could increase the yield of ace recycling and decrease the amount of solid waste. In this work, the novel method combined the mild mechanical treatment by using Tumbling pulper with the biological treatment was developed and applied to the wet strength flake and the fine screen tail line reject originated from a packaging paper mill. The results showed the new method could provide much better efficiency for the disintegration of undispersed flake and for the recovery of fiber from the rejects. The application of the laboratory scaled-Pack pulper showed the possible separation technique for mill application by fractioning effectively the fiber from the treated solid waste.

Keywords

References

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