Mill-scale optimisation of an oxygen stage for bleaching MOW, Part II

C. D. Thomas, V. L. Magnotta, K. Hristofas, J. R. Jennings, J. F. Cirucci, R. Duxbury

Research output: Contribution to specialist publicationArticle


The de-inking plant at the Kilbagie Mill of Inveresk is producing pulp with a brightness of ISO 87-90 and a dirt count of 5ppm or less. It enables the mill to make P&W grades which are virtually indistinguishable from virgin paper, although made from a much cheaper, MOW furnish. This paper describes how Kilbagie Mill's oxygen-based bleaching system was optimised to control problem contaminants such as: dyes, brown unbleached fibre, wet strength resins, groundwood, stickles and speck dirt. The system is very cost effective in chemical usage, bringing savings of $200k to $300k a year compared with a peroxide system.

Original languageEnglish (US)
Number of pages13
Specialist publicationPaper Technology
StatePublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Media Technology


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