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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Application of spacers for increasing OCC solid content in wet pressing process (I)

스페이서 사용에 의한 OCC 압착공정의 고형분 증대 (I)

  • Hwang, In-Young (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University) ;
  • Lee, Young-Ho (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University) ;
  • Jung, Jae-Gwon (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University) ;
  • Sung, Yong-Joo (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University) ;
  • Seo, Yung-Bum (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University)
  • 황인영 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 이영호 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 정재권 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 성용주 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 서영범 (충남대학교 농업생명과학대학 환경소재공학과)
  • Received : 2012.06.16
  • Accepted : 2012.07.17
  • Published : 2012.08.30
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Abstract

The increase of OCC solid content after wet pressing will save drying energy greatly. We applied spacers, which used to increase draining rate and bulk in fiber furnishes, to increase the OCC solid contents. MDF fibers (fibers for making medium density fiberboard) and diatomaceous earth were used as spacers, and added 10% by weight to the OCC fiber furnish. Application of high wet pressing pressure to the mixed furnish of spacers and refined OCC did not deteriorate bulk and drainage rate, but their solid contents were increased to 0.5-1.5% without loss of compressive strength when compared to those of unrefined OCC, which is the furnish normally used for mill commercial practice. It is believed that the spacers caused the rate of solid content increase faster in the mixed furnish with OCC at high wet pressing pressure area than the unrefined OCC furnish did. Little amount of starch addition (0.5%) to the spacers helped to keep the strength properties.

Keywords

References

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