Studies on the Evaporation and Combustion of the Calcium-base Sulfite Waste Liquor (VIII)

DOI

Bibliographic Information

Other Title
  • 亜硫酸パルプ廃液濃縮焙焼処理に関する研究
  • Bleaching of Pulps Prepared by the Kraft Digestion of Sulfite Knotter Rejects
  • (第8報) SPノット粕より得たクラフトパルプの漂白

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Description

Unbleached pulps prepared by the kraft digestion of sulfite knotter rejects were bleached by two multiple-stage methods. One method (I) consisted of chlorination, alkali extraction, and hypochlorite oxdition stages; the other method (II) consisted of hypochlorite oxidation, chorination, alkali extraction, and hypochlorite oxidation stages. The bleached pulps were then tested for chemical and physical properties. In general, these bleached pulps were of high purity and showed a high degree of brightness. The alpha-cellulose content was from 85 to 95%. The pulps bleached by Method I were somewhat inferior in brightness to the pulps bleached by Method II, but had a greater alpha-cellulose content than the latter pulps. From the data for alpha-cellulose content and other data obtained by additional experiments, it is considered that the pulps bleached by Method I can be used for making various grades of paper.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 17 (11), 723-728,735, 1963

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

Keywords

Details 詳細情報について

  • CRID
    1390282681491780992
  • NII Article ID
    130003685249
  • DOI
    10.2524/jtappij.17.723
  • ISSN
    18811000
    0022815X
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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