| 摘要 |
Bleaching method of fibrous kraft pulp, comprising ozone-treatment of the cellulose pulp followed by water-rinsing, alkaline extraction and post bleaching, characterised in that the ozone-treatment of the cellulose pulp is performed in the presence of 0.1-0.2% parts by weight anthraquinone in relation to the fibrous cellulose pulp.
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