Effect of Ammonium Sulfamate in Bleaching Pulps

DOI

Bibliographic Information

Other Title
  • パルプの漂白におけるスルファミン酸アンモンの効果

Abstract

Use of ammonium sulfamate as an aid in chlorination and hypochlorite stages of pulp bleaching has been studied through laboratory work and mill operation. The following conclusions are obtained.<BR>1) The addition of 5% ammonium sulfamate based on available chlorine in the hypochlorite stage of sulfite pulp bleaching by the GEH sequence makes effects of temperature and pH milder, and produces pulp with qualities fairly comparable to that by the CEHD sequence using chlorine dioxide only by temperature increase of 4 to 7°C, with reasonable bleaching cost, and simplicity of use. Otherwise the use of ammonium sulfamate in the chlorination stage is not so effective as in the hypochlorite stage.<BR>2) The use of ammonium sulfamate in chlorination and hypochlorite stages of kraft pulp bleaching by conventional multiple sequence including chlorine dioxide stage has less effective on bleached pulp, but when semibleaching is carried out by less than 3 stages, or hypochlorite is increased in order to get higher brightness, its use in the hypochlorite stage is markedly effective.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 20 (4), 202-206, 1966

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

Keywords

Details 詳細情報について

  • CRID
    1390282681491412224
  • NII Article ID
    130003451814
  • DOI
    10.2524/jtappij.20.4_202
  • ISSN
    18811000
    0022815X
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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