Abstract
The present invention relates to a method of treating chemical pulp in order to op- timize the consumption of bleaching chemicals and to improve the quality of the pulp. Especially the invention relates to a method according to which filtrate obtained from a suitable stage of the washing of brown stock preferably cooked by an alkaline cooking method is treated with an oxidizing chemical prior to the oxygen stage following the brown stock washing.
| Original language | English |
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| Patent number | CA2347454 |
| IPC | D21C 9/ 16 A N |
| Priority date | 16/05/2000 |
| Publication status | Published - 16 Nov 2001 |
| MoE publication type | H1 Granted patent |